Catalog No. 1025
2012
Industrial Spark Plug
Application Catalog
Industrial Pow er
Table of Contents
GENERAL INFORMATION
B Series Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II
M Series Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV
N Series Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI
C Series Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VIII
Plug Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X
INDUSTRIAL APPLICATIONS
Commercial, Stationary and Gas Engine Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Commercial, Stationary and Gas Engine Applications - 5/8'' - 24 Shielded . . . . . . . . . . . . 24
INDUSTRIAL TECHNICAL INFORMATION
Industrial Spark Plug Gaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Heat Range Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Replacements For Discontinued Spark Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Cross Reference Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Military Shielded Resistor Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Spark Plug Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Corona vs. Flashover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Connector Well Flashover / Contamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
The Spark Plug's Relation To The Ignition System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Factors Affecting Voltage Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Factors Affecting Spark Plug Temperatures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Heat Range Facts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Effect Of Fuel On Spark Plug Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Shielded Extensions, non-Shielded Extensions, Gaskets and Terminal Nut. . . . . . . . . . . . . 40
Integral Coil Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Shielded Extensions Features and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Spark Plug Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
I
B
SERIES
Solutions Driven by
Performance.
13/16”
7/8”
18mm
B-Series Category Overview
Champion
®
Iridium FB77WPCC
KB77WPCC
RB77WPCC
RB77WPC
Champion Copper RB77CC
RB75N
RB77N
KB75N
RB76N
Champion Platinum RB75PP
RB76PP
Champion Integral Coil RTB77WPCC
Specically designed for industrial
applications, IFISS is a red in
suppressor seal, which signicantly
improves both resistance and
suppression capability over the life
of the plug.
IFISS vs. Capsule Resistor Comparison
0
2500
5000
7500
10000
-50 50 150 250 350 450
Ω]
Temperature [˚C]
Resistance vs. Temperature
Capsule Resistor
Industrial FISS
Capsule Resistor Industrial FI SS
Resistance [Ω]
IFISS offers tight resistance control across the entire
temperature operating window, magnitudes improvement vs.
capsule resistor
II
High-alumina content
insulator with stronger,
highly damage-resistant
cross-section ensures
superior durability.
IFISS technology engineered
specically for demanding,
high-temperature/high-load
applications requiring consistent
resistance throughout the plug’s
service life.
Hot-Lock Nickel Plated Shell
Seal dramatically increases
strength, rigidity and
resistance to lift.
Pictured Plug:
FB77WPCC
PP CCWPCC
Champion
®
Iridium spark
surface for improved
resistance to wear.
Advanced rectangular bar
design provides improved
ignitability and longer life.
N
III
III
Super Modulated Continuous Wave (SMCW) Laser Benefits
•Consistent/uniform weld penetration and coverage
•Improved bi-metal alloying through improved
heat/energy control
•Multi-conguration compatible (precious metal)
•Fully automated
•Weld parameter/input exibility
M
SERIES
1/2”
7/8”
18mm
Advanced Laser Welding Process
Champion Integral Coil
RTM82WPCC
RTM77PP
RTM77N
RTM79N
RTM78N
RGM86N
Champion Shielded RHM78WPCC
RHM78PP
RHM83N
RHM77N
RHM78N
REM84P
REM77N
Champion Platinum RM77PP
Champion Copper RM77N
RM85G
M-Series Category Overview
Champion
®
Iridium RM82WPCC
IV
High-alumina content
insulator with stronger,
highly damage-resistant
cross-section ensures
superior durability.
M-Series also offers many
Integral Coil and Shielded
plug designs for all
applications.
Pictured Plugs:
RM77N (Left)
RTM82WPCC (Right)
PPN
Massive surface area
with the four ground
electrode ring end
to extend the life of
the plug.
WPCC
Super modulated
continuous wave laser
welding of platinum
ground electrode creates
high-strength bond with
base material.
G
V
V
N
SERIES
3/4”
13/16”
14mm
Powered by Double
Fine Wire Technology.
N-Series Category Overview
Champion Integral Coil
RTN79G
Champion Shielded RHN79G
Champion Gold/Palladium RN79G
Champion Platinum RN79PYP
• At 55MPa applied pressure, the new hot-lock design shows
a 40% reduction in core lift due to increased shell rigidity and
pre-assembled load.
• Increased rigidity and pre-assembled load also provides a
more consistent, evenly distributed, and higher compression
load at the lower shell seat, resulting in improved sealing
against combustion gases.
0%
20%
40%
60%
80%
100%
Applied Load - 55MPa
Hot Lock
Sillment
Average Lift [% Comparison]
Hot Lock Sillment
Hot Lock vs. Sillment Shell Seal - Pressurized Lift
VI
VI
Sure-Fire advanced ceramic body.
Hot-Lock Nickel Plated Shell
Seal dramatically increases
strength, rigidity and
resistance to lift.
Pictured Plug:
RN79G
G PYP
Gold/Palladium ne
wire technology
that extends the life
of the plug through
heat transfer and
ignitibility.
VII
VII
C
SERIES
3/4”
5/8”
14mm
Full Product Offerings
for Transit Solutions.
Non-Precious Metal vs. Precious Metal spark plug has a direct
effect on the life and maintenance schedule of your engine.
Precious Metal plugs provide signicantly longer required life
between service intervals improving efciency by reducing the
amount of plug service stops to maintain the engine.
C-Series Category Overview
Champion
®
Iridium RC78WYP
RC78WP
Champion Platinum RC78PYP
Champion Shielded EP3RCWYP15-1
EP8RCWYP15-2
Champion Copper RC78YCC
0%
20%
40%
60%
80%
100%
Operating Hours Increasing
J-gap, Precious Metal
Life Advantage
Standard, Non -
Precious Metal
Electrode Wear
Operating Hours Increasing
Standard Non-Precious Metal Vs. Precious Metal
VIII
VIII
Hot-Lock Nickel Plated Shell
Seal dramatically increases
strength, rigidity and
resistance to lift.
Sure-Fire™ advanced ceramic body.
Pictured Plug:
RC78WYP
PYP YCCWYP
Massive Champion
®
Iridium
center electrode and
Platinum ground electrode
design provides longer life.
IX
IX
The plug type on a spark plug is composed of a basic “Heat Range’’ number with letters and
numbers to indicate major features of the plug design. These charts contain a detailed example
of the Champion Sales Symbol.
FIRING END DESIGN
HEAT RANGE /
APPLICATION
SUPPRESSOR / SHIELDING
SHELL DESIGN
F B 77 W P C C
FB77WPCC
Letter Description
E Shielded 5/8"-24
F Industrial Resistor
H Shielded 3/4"-20
K Resistor (Special Application)
M Shielded 5/8"-24 Ordnance
R Resistor
T 13/16"-20 Thread Above
Hexagon
U Auxillary Gap
X Resistor (Special Application)
Letter
Thread
Size Reach Hex
B 18mm 13/16"
7/8"
C 14mm 3/4" 5/8"
D 18mm 1/2" 7/8"
GC* 7/8"-18 All 7/8"
GM* 18mm All 7/8"
H 14mm 7/16" 13/16"
J 14mm 3/8" 13/16"
L 14mm 1/2" or .472" 13/16"
M 18mm 1/2" 7/8"
N 14mm 3/4" 13/16"
S 1-1/8" 5/8" 1"
W 7/8"-18 All 15/16" or 1"
X 14mm 1/2" or .500" 5/8"
Ref. # Description
1-25 Automotive, Small
Engine & Ordance
75-99 Industrial & Special
Applications
No. Description
15 Gapped at .015"
17 Gapped at .017"
21 Gapped at .021"
25 Gapped at .025"
Letter Description
B Two Ground Electrodes
C Copper Plus Design
D Protruding Nose, Round
Ground Electrode
F Three Ground Electrode
G Fine Wire -- Semi-Precious
Electrode
J Cutback Ground Electrode,
Includes Modied Gap
N Four Ground Electrode
P Platinum Electrode
R Push Wire
Y Standard Projected
*PP Double Platinum
*PYP Projected Double Platinum
*WP Iridium/Platinum
WPC Iridium/Platinum/Copper
WPCC Iridium/Platinum/
* Includes Co
pper Plus Design
Core Nose
Double Copper
* 1”-20 Female Connector
Le symbole de vente gurant sur une bougie se sompose d‘ un numero de "gamme thermique"
de base ainsi que de lettres et de chiffres indiquant les caractéristiques principales du modèle de
bougie. Les tableaux ci-dessus donnent un exemple détaillé d‘ un symbole de vente Champion.
DÉSIGNATION
D'ÉCARTEMENT SPÉCIAL
SPECIAL GAP
DESIGNATION
ALLUMAGE ET CONCEPT
GAMME THERMIQUE /
APPLICATION
ANTIPARASITE /BLINDAGE
MODÈLE DE CULOT
Lettre Description
E Électrode protégée 5/8 po-24
F Résistances Industrielle
H Électrode protégée 3/4 po-20
K
Résistance (application spéciale)
M Électrode protégée 5/8 po-24
R
Résistance
Matériel militaire
T Hexagone à letage supérieur
13/16 po-20
U Éncartement auxiliaire
X
Résistance (application spéciale)
Lettre
Calibre de
letage Portée Hexagon
B 18mm 13/16 po
7/8 po
C 14mm 3/4 po 5/8 po
D 18mm 1/2 po 7/8 po
GC* 7/8 po-18 Toutes 7/8 po
GM* 18mm Toutes 7/8 po
H 14mm 7/16 po 13/16 po
J 14mm 3/8 po 13/16 po
L 14mm
1/2 po ou 0,472 po
13/16 po
M 18mm 1/2 po 7/8 po
N 14mm 3/4 po 13/16po
S 1-1/8 po 5/8 po 1 po
W 7/8 po-18 Toutes 15/16 po ou 1
X 14mm
1/2 po ou 0,500 po
5/8 po
Ref. # Description
1-25 Automobiles, petits
moteur, matérial
militaire
75-99 Applications indus-
trielles et spéciales
N° Description
15 Écartement de 0,015 po
17 Écartement de 0,017 po
21 Écartement de 0,021 po
25 Écartement de 0,025 po
Lettre Description
B Deux électrodes de masse
C Concept Copper Plus
D Pointe saillante, électrode
de masse ronde
F Trois électrodes de masse
G Fil n -- electrode en pierre
semi-precíeuse
J
Électrode de masse racourcie
avec écartement modié
N
Quatre électrodes de masse
P
Électrode en platine
R Fil de poussé
Y Pointe en saillie ordinaire
*PP Double platine
*PYP Pointe en saillie double platine
*WP Iridium/ platine
WPC Iridium/ platine/ cuivre
WPCC Iridium/ platine/ double cuivre
* Avec concept Copper Plus
* Raccord femelle 1 po - 20
El símbolo de ventas de una bujía está compuesto por un número básico de “gama térmica” con
letras y números para indicar las propiendades importantes del diseño de lay bujía. Estas tablas
contienen un ejemplo detallado del símbalo de ventas de Champion.
DISEÑO ESPECIAL DE
SEPARACIÓN ENTRE
PUNTAS
DISENO DE EXTREMO DE
ENCENDIDO
GAMA TÉRMICA /
APLICACIONES
SUPRESOR / PROTECCIÓN
DISEÑO DEL RECUBRIMIENTO
Letra Descripción
E Blindado 5/8" – 24
F Resistor Industrial
H Blindado 3/4" – 20
K
Resistor (aplicación especial)
M Blindado 5/8" – 24 armamento
R
Resistor
T Rosca por encima del
hexágono 13/16" – 20
U Separación entre puntas auxiliar
X
Resistor (aplicación especial)
Letra
Tamaño
de rosca Distancia Hex.
B 18mm 13/16"
7/8"
C 14mm 3/4" 5/8"
D 18mm 1/2" 7/8"
GC* 7/8" – 18 Todas 7/8"
GM* 18mm Todas 7/8"
H 14mm 7/16" 13/16"
J 14mm 3/8" 13/16"
L 14mm
1/2
"
ó 0,472
" 13/16"
M 18mm 1/2" 7/8"
N 14mm 3/4" 13/16"
S 1-1/8" 5/8" 1"
W 7/8" – 18" Todas 15/16" ó 1"
X 14mm
1/2
"
ó 0,500
" 5/8"
No. ref. Descripción
1-25 Automotriz, motores
pequeños, armamento
75-99 Aplicaciones
industriales y
especiales
No. Descripción
15 Separados 0,015"
17 Separados 0,017"
21 Separados 0,021"
25 Separados 0,025"
Letra Descripción
B Electrodo de does tierros
C Diseño Copper Plus
D Electrodo redondo a tierra de
punta saliente
F Electrodo de tres tierras
G Electrodo de alambre no
semiprecioso
J
Electrodo de tierra recortado,
incluye separación modicada
N
Electrodo de cuatro tierros
P
Electrodo de platino
R Alambre de empuje
Y Punta de núcleo saliente normal
*PP Platino doble
*PYP Platino doble saliente
*WP Iridio/ Platino
WPC Iridio/ Platino/ Cobre
WPCC Iridio/ Platino/ Cobre doble
* Incluye diseño Copper Plus
* Conector hembra 1" - 20
PLUG TYPE
X
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
ABC
Washing Machines
All Models ABC
.025W14
569
AJAX
(Cooper Energy Services)
6-1/2x8CMA, EA30
.030W89D
589
7-1/4x8CMA, E30, 7-1/2x10CMA, E42
.030W89D
589
CMA, C30, 7-1/2x10, CMA, EA22 6-1/2x8
.030W14
569
DP115, DP125 13-1/4x16
.030W18
518
DP160, DPC160 11x14
.030W18
518
DP165, DP300, DP325 15x16
.030W18
518
DP230, DP250 13-1/4x16
.030W18
518
DP60, DPC60, DPC120 9-1/2x12
.030W18
518
DP80, DPC80 11x14
.030W18
518
DPC115, DPC140 13-1/4x16
.030W18
518
DPC162, DPC180, DPC300 15x16
.030W18
518
DPC180LE, DPC360LE Main Chamber
.030W18
518
1207 RW80PP
.015
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
DPC180LE, DPC360LE Pre Chamber
.015W10
510
582 RW82P W85N 545
DPC230, DPC280 13-1/4x16
.030W18
518
DPC360, DPC540 15x16
.030W18
518
DPC600, DPC800
.030W18
518
DPC600LE, DPC800LE Main Chamber
.030W18
518
1207 RW80PP
.015
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
DPC600LE, DPC800LE Pre Chamber
.015W10
510
582 RW82P W85N 545
DPC81 10-1/2x12, DPC105 12x14
.030W18
518
E15 5-1/4x8, E42, C40, C42 8-1/2x10
.030W14
569
WL, EA15 5x6-1/2
.030W14
569
ALLIS-CHALMERS
GASOLINE
G-138, G-149, G-160, 14 Power Units
.025RJ8C
871
J8C 841
G-226 3/8" Reach
.020RJ6C
102
RJ8C 871
575 RHN79G 1232 RTN79WYP
,025
G-226, G-262 3/4" Reach
.025RN5C
123
540 RTN79GN5C 120
P-1879, PC-1879, PC-2505, PCS-2505
.025D9
509
LOW GRADE FUEL
G-226 3/4" Reach
.030RN14YC
405
G-226, W-201 3/8" Reach
.030RJ12C
592
J11C 511
NATURAL & LP GAS
G-138, G-149, 14 Power Units
.020RJ6C
102
J6C 823
G-160
.020J4C
825
G-226 3/8" Reach
.020RJ6C
102
RJ8C 871
575 RHN79G 1232 RTN79WYP
,025
G-226, G-262 3/4" Reach
.025RN2C
818
540 RTN79GN2C 805
AMERICAN MOTORS
232, 258 cid 6-Cyl.
.025RN12YC
404
N12YC 38
304, 360 cid V-8
.025RN12YC
404
N12YC 38
ARIEL
530 RN79G
.012
1232 RTN79WYP
,012
JGS-1 High Tension
540 RTN79G
530 RN79G 1232 RTN79WYP
,012
JGS-1 Low Tension
540 RTN79G
ARROW
C46, C66, C96, C106, C255
.025D21
502
D89D 543
C96, C106, C255
.025D21
502
1
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
ARROW
L-333, L-795, L-1770, L-2165, F-208
.025W89D
589
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
VRG220, VRG330
.025RN5C
123
540 RTN79GN5C 120
Y-12, Y-18, Y-24, Y-33
.030RN14YC
405
BARTON
Washing Machines
All Models BARTON
.030RJ8C
871
J8C 841
BAUDOUIN
6 or 12 P15.2
.020S59YC
685
BERNARD
1224 RL85G
.015
551 RHL79G 556 RTL85G
,015
All Models BERNARD
.025RL86C
830
L86C 306
BUDA (See Allis-Chalmers)
CASE
188G, 301G, 377G Gasoline
.025D16
516
UD16 555
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
188G, 301G, 377G Natural & LP Gas
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
A284, A377, 159G Gasoline
.025D16
516
UD16 555
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
A284, A377, 159G Natural & LP Gas
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
CATERPILLAR
D315G
D318G
G3304 copy the 1/2" reach and 3/4" rache
NATURAL GAS
1224 RL85G
.015
551 RHL79G 556 RTL85G
,015
3306, G333 1/2" Reach
.015RL15B
535
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
3306, G333 3/4" Reach, G343, G3304
540 RTN79G
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
G3400 Series
540 RTN79G
1224 RL85G
.015
551 RHL79G 556 RTL85G
,015
G342, G353, G375, G379
.015RL15B
535
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
G3500 Series
.012RB77CC
237
636 RB77WPC RB75N 643
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
G3600 Series
.012RB77CC
237
636 RB77WPC RB75N 643
G3600 Series (Sensor Plug)
FI21505
227
G3600 Series (Sensor Plug) Bulbos
FI21511
1211
1224 RL85G
.015
551 RHL79G 556 RTL85G
,015
G397, G398, G399
.015RL15B
535
STARTING ENGINES FOR DIESELS
14mm Heads
D320, D339, D342, D343, D353
.030RJ18YC
58
D330, D333
.030RJ12YC
14
J12YC 10
D375, D379, D397, D398, D4600
.030RJ18YC
58
18mm Heads
D320, D326, D337
.025D16
516
UD16 555
D339, D342, D343, D353
.025D16
516
UD16 555
D375, D379, D397, D398
.025D16
516
UD16 555
CHRYSLER
GASOLINE
Light Service
1976-75 H225, HB-225
.035RV12YC
406
H440
.035RJ14YC
63
J12YC 10
2
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
CHRYSLER
GASOLINE
Light Service
IND54
.035RJ18YC
58
J6C 823
LH318, H170, HB170
.035RN12YC
404
N12YC 38
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
Thru 1974 H225, HB-225
.035RN12YC
404
540 RTN79GN12YC 38
Normal Service
1975-73 440-3 (Motor Home)
.035RV9YC
400
1976-75 H225, HB-225
.035RV12YC
406
1978 H105
.025RN9YC
415
N9YC 300
1978-77 HB225
.035RV12YC
406
1978-77 L360, LH360
.035RN12YC
404
N12YC 38
1978-77 LH318
.035RN11YC4
322
N11YC 302
H273
.035RN12YC
404
N12YC 38
H318, HB318, HC318, HT318
.035RJ12YC
14
J12YC 10
H361, H383, H413, HA318
.035RJ14YC
63
H440
.035RJ14YC
63
J12YC 10
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
HB361, HB383, HC361, HT361
.020RN5C
123
540 RTN79GN5C 120
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
HB413, HC413, HB170
.020RN5C
123
540 RTN79GN5C 120
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
HT413, HB426, HC426, H170
.020RN5C
123
540 RTN79GN5C 120
IND12A, IND19B, IND52
.035RJ8C
871
J8C 841
IND14, IND14A, IND15, IND15A
.035RJ12C
592
J11C 511
IND16A, IND 18A, IND19A, IND20A
.035RJ12C
592
J11C 511
IND23A, IND24A
.035N21
504
IND30, IND38, IND908A, IND931
.035RJ12C
592
J11C 511
IND31, IND32, IND33
.035RJ12C
592
J11C 511
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
IND53, IND56, IND56A
.020RN5C
123
540 RTN79GN5C 120
IND54
.035RJ18YC
58
J6C 823
IND5A, IND6A, IND7A
.035RJ12C
592
J11C 511
IND8A, IND13, IND13A
.035RJ12C
592
J11C 511
LH318
.035RN11YC4
322
N11YC 302
LT318
.035RF10C
129
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
Thru 1974 H225, HB-225
.035RN12YC
404
540 RTN79GN12YC 38
Severe Service
H440
.035RJ14YC
63
J12YC 10
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
IND56, IND56A, LH318
.020RN5C
123
540 RTN79GN5C 120
NATURAL & LP Gas
1977 HB225
.020RV12YC
406
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
H170, HB170, H225, HB225
.020RN5C
123
540 RTN79GN5C 120
3
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
CHRYSLER
NATURAL & LP Gas
H318, HB318, HC318, HT318
.035RJ12YC
14
J12YC 10
H361, H383, H413, HA318
.035RJ14YC
63
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
HB361, HB383, HC361, HT361
.020RN2C
818
540 RTN79GN2C 805
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
HB413, HC413, HT413, HB426, HC426
.020RN2C
818
540 RTN79GN2C 805
IND13A, IND14, IND13A, IND14A, IND15
.020RJ8C
871
J8C 841
IND15A, IND16A, IND30, IND31, IND32
.020RJ8C
871
J8C 841
IND33, IND38, IND908A, IND931
.020RJ8C
871
J8C 841
IND5A, IND6A, IND7A, IND8A, IND13
.020RJ8C
871
J8C 841
CLARK (See Dresser Clark)
CLEVELAND DIESEL
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
Model 358
.012W85N
545
582 RW82P
CLIMAX
GASOLINE
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
CE101, CE106, CE264
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
CE46, CE66, CE81, CE96
.025D14
514
563 XED16
,025
R-165 Snowplow Only
.025D16
516
UD16 555
V-80, V-85, V-122, V-125 8.2:l C.R.
.015D14
514
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
V-80, V-85, V-122, V-125 9.4:1 C.R.
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
COMPRESCO
Search for model - Natural gas pipe line
CONTINENTAL
ALL FUELS
B20, 371, 421, R513, R572, R602
.025D9
509
N56 to 62, N4062, NA82, TS415
.020D9
509
S6749 to 6820, Y69, Y91, Y112
.020D9
509
U501, Z129, 134
.025D9
509
GASOLINE
Normal Service
700, 800, 900, 1100, 1200
.030RJ8C
871
J8C 841
All Other 14mm Heads
.025RJ6C
102
J6C 823
B405, 4124, 4140, 4162, 4163, 6226
.025D16
516
UD16 555
B6244, 6245, 6277, 6371, 6405, 6427
.025D16
516
UD16 555
C46, C66
.025D89D
543
C96, C106, C225
.025D21
502
E223, F124, 135, 140, 162, 163, 186
.025D16
516
UD16 555
F209, 226, 227, 244, 245
.025D16
516
UD16 555
FO6228
.030RN12YC
404
N12YC 38
G134, 157, 176, H227, 243, 260
.025D16
516
UD16 555
G193, K6271, 6298, 6330, 6363
.025RJ8C
871
J8C 841
857 RH18Y
,030
G4193
J382 to 403, T371 to 247
.025D16
516
UD16 555
4
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
CONTINENTAL
GASOLINE
Normal Service
L478
.025J4C
825
L6478
.025RJ6C
102
J6C 823
M6271, 6290, 6330, 6363, OS220
.025D16
516
UD16 555
Multi-Tool
.025RJ12C
592
J11C 511
R11, 14, 17
.025RL87YC
327
L87YC 312
R6513, 6572, 6602, U6501 14mm Heads
.025RJ8C
871
J8C 841
R6513, 6572, 6602, U6501 18mm Heads
.025D16
516
UD16 555
R688-46, R800-46, R810-46, R839-46
.025RL87YC
327
L87YC 312
RS542, T6371, 6427, TC56
.025D16
516
UD16 555
TM13, 20, 27
.035RN9YC
415
N9YC 300
TS415, Z134
.025D9
509
Y69, Y91, Y112, Y4069, 4091, 4112
.025D16
516
UD16 555
Z105 to 120, ZA120
.025D16
516
UD16 555
Severe Service
F4163, F6227, F6245
.025D9
509
NATURAL & LP GAS
All Other 14mm Heads
.025RJ6C
102
J6C 823
C46, C66, C96, C106, C255
.025D21
502
D89D 543
E223, F124, 162, 224, 226
.020D9
509
G193
.020RJ6C
102
J6C 823
H280, 277, M271, 290, 330, 363
.020D9
509
J382 to 403
.020D9
509
S749, T247, 371 to 427
.020D9
509
COOPER - BESSEMER
Shielded
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
GAW, GMR, GMV, JS
.015W85N
545
582 RW82P 578 REW82P 534 REW80N 638 RTW80NW80N 580
578 REW82P 534 REW80N
,015
GMW, GMX V-250, V-275 5/8" Reach
578 REW82P 534 REW80N
,015
GMWA, GMWC 5/8" Reach
635 RHW78N
,012
GMWA, GMWC, GMW, GMX, V-250, V-275,
Z330 1"Rch.
635 RHW78N
,012
GMXE, GMWH, GMXH, W330 1" Reach
578 REW82P 534 REW80N
,015
GMXE, GMWH, GMXH, W330 5/8" Reach
Unshielded
233 RM82WPCC
.012
236 RHM78WPCC 222 RHM78PP 223 RTM77PP
,015
ENG, GNG
.015RM77N
519
217 RM77PP 234 RHM78N 1201 RTM78ND14N 529
GAB, GAF, GAG, GAJ, GAN
.025C97B
513
GAO, GAOA, GAR, GAU, GBE, GBE, GBG
.025C97B
513
GAS, EN, ENB; 'Hope' 14-3/4" x 16"
.025C97B
513
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
GAW, GMR, GMV, JS
.015W85N
545
582 RW82P 578 REW82P 534 REW80N 638 RTW80NW80N 580
GBH, GBI, GBK
.025W18
518
GBM thru GBP, GN, GSC, GSD
.025W18
518
GDA thru GDS, GHA, GHB, GMD
.025C97B
513
233 RM82WPCC
.012
236 RHM78WPCC 222 RHM78PP 223 RTM77PP
,015
GDJ, GMA, GMB, GMC w/G402 Reducing
Bushing
.015RM77N
519
217 RM77PP 234 RHM78N 1201 RTM78ND14N 529
5
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
COOPER - BESSEMER
Unshielded
233 RM82WPCC
.012
236 RHM78WPCC 222 RHM78PP 223 RTM77PP
,015
GDT, GFB, GFE, GFK w/G402 Reducing
Bushing
.015RM77N
519
217 RM77PP 234 RHM78N 1201 RTM78ND14N 529
GMG, GMO, GMOA, GRC
.025C97B
513
C97B 513
228 RW77PP
.012
635 RHW78N 552 RGC77N
,015
GMVH, LSVB
.015RW77N
565
RW78N 631
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
GMW, GMX, V-250, V-275, W330 5/8" Reach
.015RW80N
553
582 RW82P W80N 580
228 RW77PP
.012
635 RHW78N 552 RGC77N
,012
GMWA, GMWC, GMW, GMX, V-250, V-275,
Z330 1" Reach
.012RW77N
565
RW78N 631
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
GMWC, GMWA 5/8" Reach
.015RW80N
553
582 RW82P W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
GMXE, GMWH, GMXH 5/8" Reach
.015RW80N
553
582 RW82P W80N 580
228 RW77PP
.012
635 RHW78N 552 RGC77N
,012
GMXE, GMWH, GMXH, W330 1"Rch.
.012RW77N
565
RW78N 631
GS
.025UD16
555
'Hope' 18" x 20"
.02525
525
LS, LSV 1-1/8"-12 Heads
.012RS79N
598
LS, LSV 7/8"-18 Heads
.015W10
510
W80N 580
228 RW77PP
.012
635 RHW78N 552 RGC77N
,012
Quad Series
.012RW77N
565
RW78N 631
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
Z330 5/8" Reach
.015RW80N
553
582 RW82P W80N 580
COOPER ENERGY SERVICES (See Superior)
CP - CHICAGO PNEUMATIC
16CPG, RHGB-50
.025W18
518
534 REW80N
,015
9CPG High Compression
9CPG Low Compression
.025D16
516
UD16 555
Cat. D13000 And Other 7/8"-18 Heads
.025W14
569
CUMMINS
6B
.0202095
2095
1206 RC78WP
.017
6B w/230 hp
.017RC78YCC15
1209
1208 RC78PYP
1206 RC78WP
.017
6C
.017RC78YCC15
1209
1208 RC78PYP
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
FTA19GC SLB
.012RB77CC
237
636 RB77WPC RB75N 643
1206 RC78WP
.017
G3.9
.015RC78YCC15
1209
1208 RC78PYP
1206 RC78WP
.017
G5.9
.015RC78YCC15
1209
1208 RC78PYP
1206 RC78WP
.017
G5.9e
.015RC78YCC15
1209
1208 RC78PYP
1206 RC78WP
.017
G8.3
.015RC78YCC15
1209
1208 RC78PYP
1206 RC78WP
.017
G8.3e
.015RC78YCC15
1209
1208 RC78PYP
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
G855
.012RB77CC
237
636 RB77WPC RB75N 643
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
G855e
.012RB77CC
237
636 RB77WPC RB75N 643
GM11
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
GNHC-4, GNH-220, GNH-250 1/2" Reach
.025RL15B
535
GNHC-4, GNH-220, GNH-250 3/8" Reach
.025J4C
825
6
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
CUMMINS
1206 RC78WP
.017
GTA 8.3
.015RC78YCC15
1209
1208 RC78PYP
1206 RC78WP
.017
GTA8.3 SLB
.015RC78YCC15
1209
1208 RC78PYP
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
GTA855
.012RB77CC
237
636 RB77WPC RB75N 643
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
GTA855e
.012RB77CC
237
636 RB77WPC RB75N 643
GV-12450, GM-12-525 3/8" Reach
.025J4C
825
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
GV-12450, GV-12-525 1/2" Reach
.025RL15B
535
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
KTA19GC
.012RB77CC
237
636 RB77WPC RB75N 643
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
KTA38GC SLB
.012RB77CC
237
636 RB77WPC RB75N 643
219 RC78PYP
.021
L-10
L10CNG
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
Q19G
.012RB77CC
237
636 RB77WPC RB75N 643
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
QSV 81-V16
.012RB77CC
237
636 RB77WPC RB75N 643
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
QSV 91-V18
.012RB77CC
237
636 RB77WPC RB75N 643
Engines w/Special Adapter
530 RN79G
.025
575 RHN79G 1232 RTN79WYP
,025
No. 173416 5/8" Reach w/N677 Gasket
.025RN2C
818
540 RTN79GN2C 805
530 RN79G
.025
575 RHN79G 1232 RTN79WYP
,025
No. 90210035, 90210036 3/4" Reach
.025RN2C
818
540 RTN79GN2C 805
VHP SERIES
V-16
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
9390G, P9390GSI
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
DECO-GRAND
567 XEJ12
,025
AU7B, DE8
DE2, DE2R, DE3, DE3R, DE7R, DEA8
.025RJ8C
871
J8C 841
DELAVAL
228 RW77PP
.012
577 RHW77N 552 RGC77N
,015
1980-69 HV-8, HV-12, HV-16
.015RW77N
206
W77N 539
228 RW77PP
.012
577 RHW77N 552 RGC77N
,015
1980-72 HA6, HVA-8
.015RW77N
206
W77N 539
228 RW77PP
.012
577 RHW77N 552 RGC77N
,015
1980-73 HVA-16
.015RW77N
206
W77N 539
228 RW77PP
.012
577 RHW77N 552 RGC77N
,015
1980-74 HVA-12
.015RW77N
206
W77N 539
DETROIT DIESAL
149 Series
1230 FB77WPCC
243 RC78PYP15
.015
30, 40, 50 Series
1205 RB77WPCC
92 Series
DEUTZ MWM
242 RB75WPCC
.012
G620 V-8, TBG616 V-8, TBG616 V-12
242 RB75WPCC
.012
TBG616K V-8K, TBG616K V-12K, TBG616K
V-16K
242 RB75WPCC
.012
TBG620 V-8, TBG620 V-12, TBG620 V-16
242 RB75WPCC
.012
TBG620K V-12K, TGB620K V-16K
7
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
DORMAN
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
12S, 12STCWG, 12STCAG, 6PG, 12PG
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
12SG
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78NM82N 566
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
3DAG, 4DAG, 6DAG, 6QG, DATG4, 6
.015RN3C
880
540 RTN79GN3C 801
1224 RL85G
.015
551 RHL79G 556 RTL85G
,015
6LEG
.015RL82C
874
L82C 811
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
6PG, 12PG
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
6SEG, 8SEG, 12SEG
540 RTN79G
6SETCWG
.015S59YC
685
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
6SETCWG MinNox
540 RTN79G
DRESSER CLARK
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
BA, HBA, HMA, HLA, HRA, MA
.012W85N
545
582 RW82P
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
RA, TRA, TLA, TCV
.012W85N
545
582 RW82P
Supercharged & Turbocharged
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
HBAT, HLAT, HRAT, TRA, TLA
.012RW80N
553
582 RW82P W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
TCVB, TCVC, TVM, VMC
.012RW80N
553
582 RW82P W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
TLAB, TLAC, TLAD, TPV, TCVA
.012RW80N
553
582 RW82P W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
TVC, HSRA, RAS, TMB
.012RW80N
553
582 RW82P W80N 580
DRESSER RAND
1207 RW80PP
.012
1204 RHW80PP 544 HW83F 645 RTW83F
,012
KVG Pulse Chamber Type
.012RW83F
559
582 RW82P
228 RW77PP
.012
635 RHW78N 552 RGC77N
,012
KVSR, KVSRA, KVSE, KVFS, PKVSE
.012RW77N
565
RW78N 631
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
TCV, TCVA, TCVD, TLAD
.012RW80N
553
582 RW82P W80N 580
DRESSER Waukesha
See Waukesha
ECHO
KEH202D, SV2 (Kioritz)
.025RCJ8
840
CJ8 843
ENTERPRISE
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
GSG-36, 38; GSM-36, 38
.012RB76N
576
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
GSM-36, 38 Unshielded 18mm Heads
.012RB76N
576
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
GSM-36, 38 Unshielded 7/8"-18 Heads
.012RW80N
553
582 RW82P W80N 580
228 RW77PP
.012
1204 RHW80PP 577 RHW77N 552 RGC77N
,015
HV-8, HV-12, HV-16
.015RW77N
206
W77N 539
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
TDSG-36-6-38 Center of Head
.012RW80N
553
582 RW82P W80N 580
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
TDSG-36-6-38 Rear Side Of Head
.012RB76N
576
FAIRBANKS MORSE
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,012
38D8-1/8 Series
.015RM79F
571
217 RM77PP 222 RHM78PP 1201 RTM78N
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
38DS8-1/8, 38F-85, 38FS5-1/4
.012RB76N
576
FM-7, FM-12, FM-18, FM-24, FM-36
.025W89D
589
ZC, ZC118, ZC208, ZC346
.025W89D
589
ZC346, ZC503, ZC739
.025W89D
589
FICHTEL-SACHS (See Sachs)
FORD
104 cid
.035RN11YC4
322
N11YC 302
8
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
FORD
140 cid (2.3L)
.035RS12YC
401
144, 170 cid
.035RF11YC
22
153 cid (2.5L)
.035RS12YC
401
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
158, 175, 201, 256 cid
.020RN5C
123
540 RTN79GN5C 120
182 cid (3.0L)
.035RN7YC
332
200, 240, 250, 262, 292 cid
.030RF10C
129
223, 272 cid
.030RF9YC
409
300 cid (4.9L)
.030RF11YC
22
330, 332, 361, 391, 401 cid
.030RF10C
129
460, 429, 351, 302, 370 cid
.035RV12YC
406
477 cid 1977 & Up
.035RZF10
106
477 cid Thru 1977
.035RF10C
129
534 cid 1976 & Up
.035RZF10
106
534 cid Thru 1976
.030RF10C
129
67 cid (1.1L)
.035RN9YC
415
N9YC 300
79 cid (1.3L)
.035RS9YC
304
854 RH10C
,025
91, 120, 134, 172, 192 cid Gasoline
844 H10C
538 RH8C
,020
91, 120, 134, 172, 192 cid LP Gas
587 H8C
98 cid (1.6L)
.035RN9YC
415
N9YC 300
CSG 850, CSG 850M-EFI
.035RV12YC
406
LSG 875
.035RV12YC
406
WSG 858, WSG 858-HO
.035RV12YC
406
WSG 858, WSG 858-HO EFI, LSG875
.035RV12YC
406
FUJI-ROBIN
EC-02, EC-02R
.025CJ6
849
1224
.025
551 RHL79G 556 RTL85G
,025
EC-05, EC-07, FG-14
.025RL86C
830
RL85
G
L86C 306
EC-10, EY-21
.030RJ8C
871
J8C 841
1224
.025
551 RHL79G 556 RTL85G
,025
EY-13, EY-18, EY-25, EY-33
.025RL86C
830
RL85
G
L86C 306
1224
.025
551 RHL79G 556 RTL85G
,025
EY-27, EY-14, EY-40, EC-16
.025RL86C
830
RL85
G
L86C 306
1224
.025
551 RHL79G 556 RTL85G
,025
EY-44, EY-88, EC-03, EC-04
.025RL86C
830
RL85
G
L86C 306
Series FA, KB, KD, KE, KH, KM
.030RJ8C
871
J8C 841
Kerosene Engines
EY-13, EY-18, EY-25, EY-33, EY-44
.025L92YC
806
GEMINI
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
G26, G35
.025RL82C
874
L82C 811
GENERAL MOTORS
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
16-358HN, 16-358-X
.012W85N
545
582 RW82P
530 RN79G
.025
575 RHN79G 1232 RTN79WYP
,025
305, 351, 401, 478, 702 Gasoline
.025RN4C
104
540 RTN79GN4C 803
530 RN79G
.025
575 RHN79G 1232 RTN79WYP
,020
305, 351, 401, 478, 702 LPG
.020RN3C
880
540 RTN79GN3C 801
GUASCOR
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
FG180, FGLD180, FG240
.012RB77CC
237
636 RB77WPC RB75N 643
1230 FB77WPCC
9
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
GUASCOR
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
FGLD240, FGLD360, FGLD480
.012RB77CC
237
636 RB77WPC RB75N 643
HGM 560
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
SFGLD 180, SFGLD 240, SFGLD 360, SFGLD
480, SFGLD 560
.012RB77CC
237
636 RB77WPC RB75N 643
HALL SCOTT
GASOLINE
1091-G1 Intake
.025D21
502
1091-OS Intake
.025D16
516
UD16 555
136, 180, 190, 504 Exhaust
.025D14
514
151, 152, 165, 167
.025W14
569
200-0, 201-0; 400-0 Regular
.025D14
514
400-0 Water-Jacketed Exhaust
.025D9
509
400-0, 300, 470, 480 Intake
.025D21
502
400-0, 470, 480 Sour Gas
.020K97F
597
400-0, 470, 480, 6156 Exhaust
.025D14
514
440, 2269-0; 1091-OS Exhaust
.025D14
514
590 Series
.025RJ6C
102
J6C 823
6156, FE, G1, G2 Intake
.025D21
502
6156-B1, 6182-B1, 1091-B1 Exhaust
.025D6
506
6156-B1, 6182-B1, 1091-B1 Intake
.025D14
514
6182, G1, G2, FE Intake
.025D21
502
779-GHI
.025D16
516
UD16 555
855, 935 Exhaust
.025D6
506
855, 935 Intake
.025D21
502
F3, G1, G2, 6182 Exhaust
.025D14
514
G1, G2, FE; 1091G1 Exhaust
.025D14
514
NATURAL & LP GAS
400-0, 470, 480, 855, 935 Exhaust
.020D6
506
400-0, 470, 480, 855, 935 Intake
.020D14
514
590 Series
.025J4C
825
HERCULES
1091-OS Exhaust
.025D14
514
1091-OS Intake
.025D16
516
UD16 555
1404
.025RJ12YC
14
J12YC 10
149H, 169H, 198AH, L237
.025RJ6C
102
J6C 823
14mm Heads Using Natural Gas
.015J4C
825
6156, 6182 Natural & LP Gas Exhaust
.025D6
506
6156, 6182 Natural & LP Gas Intake
.025D14
514
219 RC78PYP
.025
GTA 3.7, GTA 5.6
HXE, HXLEF
.025D16
516
UD16 555
IXB
.025RJ12C
592
J11C 511
IXLB, JXC, JXD, JXLD, 14mm Heads
.025RJ8C
871
J8C 841
JXLD, JXC 18mm Heads
.025D9
509
JXLDER, IXBER, NXB, JX4LD
.025RJ8C
871
J8C 841
QXC, QXD, JX4C, GO6, JX4S, RXC
.025RJ8C
871
J8C 841
RXLDH, C2-90D, IXA, QXLD, GO4
.025RJ8C
871
J8C 841
644 RJ88P
.015
Thermo King
Normal Service
10
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
HERCULES
Normal Service
CV4-180, CV4-180ER
.025RJ8C
871
J8C 841
G-1000 Natural & LP Gas
.025RJ6C
102
J6C 823
G298H
.030RJ6C
102
J6C 823
G3400 Power Unit (Magneto Ignition)
.025RJ6C
102
J6C 823
1206 RC78WP
.015
G4800, GTA4800
.015RC78YCC15
1209
218 RC78PYP
GO Series 226, 298, 339, 226AH
.025RJ6C
102
J6C 823
GO3, QXB, WXLC, GO
.025RJ6C
102
J6C 823
G-Series 1400, 1500, 1600, 1700
.030RJ6C
102
J6C 823
G-Series 2000, 2300, 3000, 3400
.030RJ6C
102
J6C 823
HOFFCO
Powerhead (Power Products AV52)
.030RCJ8
840
CJ8 843
Powerhead (Tecumseh Engines)
.030RJ8C
871
J8C 841
HOPE (See Cooper-Bessemer)
INGERSOLL - RAND
Naturally Aspirated
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
PKVG, KVGR, PKVGR
.012RW80N
553
1207 RW80PP W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
XVG, PVG, JVG, SVG, KVG, PJVG, PSVG
.012RW80N
553
1207 RW80PP W80N 580
228 RW77PP
.015
577 RHW77N 552 RGC77N
,015
KVS, KVR, KVSR w/Precombustion Chamber
.015RW77N
565
RW78N 631
1207 RW80PP
.012
1204 RHW80PP 544 HW83F 645 RTW83F
,012
KVS-AT Thru ET Series
.012RW83F
559
582 RW82P
1207 RW80PP
.012
1204 RHW80PP 544 HW83F 645 RTW83F
,012
KVS-FT Series on Thru 1977
.012RW83F
559
582 RW82P
1207 RW80PP
.012
1204 RHW80PP 544 HW83F 645 RTW83F
,012
Thru 1977 KVR, KVSR
.012RW83F
559
582 RW82P
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
Turbocharged Models
.012RW80N
553
1207 RW80PP W80N 580
1207 RW80PP
.012
1204 RHW80PP 544 HW83F 645 RTW83F
,012
TVS, TVR, SVS, KVT, KVH
.012RW83F
559
582 RW82P
PULSE GENERATOR IGNITION
1207 RW80PP
.012
1204 RHW80PP 544 HW83F 645 RTW83F
,012
KVS, PKVG, KVGR, PKVGR
.012RW83F
559
582 RW82P
INTERNATIONAL
GASOLINE
Light Service
U175, UC175, UC200, UC221, UC263
.025D18Y
549
U220, UB220, U240, UB240
.030J12YC
10
J6C 823
U308, UB308, UV345, U372, UV392
.030J12YC
10
J6C 823
UB264, UV266, U282, UV304
.030J12YC
10
J6C 823
UC301, U164, U169, U281
.025D18Y
549
UC60, U123, UC135, UC135B, UC153
.025D18Y
549
UR501, RV549, U269, UR372
.030RJ12YC
14
J12YC 10
UV401, U450, UR450, UV461, U501
.030J12YC
10
J6C 823
Normal Service
11
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
INTERNATIONAL
GASOLINE
Normal Service
C-152, C-196, C-304, C-345, C-392
.030RJ12YC
14
J12YC 10
C-446
.035RS9YC
304
RS14YC 408
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
C-537, C-605
.020RN11YC4
322
540 RTN79GN11YC 302
C-549
.030RJ6C
102
J6C 823
T340
.025D9
509
U164, U169, U175
.025D16
516
UD16 555
563 XED16
,025
U164, U169, U175 Shielded
U2, U2A, UC60, UC135
.025D16
516
UD16 555
563 XED16
,025
U2, U2A, UC60, UC135 Shielded
UB240, UV266
.030RJ6C
102
J6C 823
UC135B, UC153
.025D16
516
UD16 555
563 XED16
,025
UC135B, UC153 Shielded
UC135B, UC153, UC175
.025RD15Y
526
D15Y 515
516 D16
,025
UC175, UC200, UC301
555 UD16
563 XED16
,025
UC175, UC200, UC301 Shielded
UC200, UC221, UC263, UC301, T6
.025RD15Y
526
D15Y 515
UC221, UC263
.025D16
516
UD16 555
563 XED16
,025
UC221, UC263 Shielded
UR372, UV304, UV345, UV392
.030RJ6C
102
J6C 823
Severe Service
C-446
.035RS9YC
304
RS14YC 408
U175, UC175, UC200, UC221, UC263
.025D6
506
U220, UB220, U240, UB240
.030J12YC
10
J6C 823
U308, UB308, UV345, U372, UV392
.030J12YC
10
J6C 823
UB264, UV266, U282, UV304
.030J12YC
10
J6C 823
UC301, U164, U169, U264, U281
.025D6
506
UC60, U123, UC135, UC135B, UC153
.025D6
506
UR501, UV549, U269, UR372
.030RJ6C
102
J6C 823
UV401, U450, UR450, UV461, U501
.030J12YC
10
J6C 823
NATURAL & LP-GAS
C-152, C-196, C-304, C-345, C-392
.030RJ12YC
14
J12YC 10
C-446 Normal Service
.020RS14YC
408
C-446 Severe Service
.020RS9YC
304
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
C-537, C-605
.020RN11YC4
322
540 RTN79GN5C 120
C-549
.030RJ6C
102
J6C 823
U175, UC153, UC175
.015RD15Y
526
D15Y 515
U220, UB220, U240, UB240
.030J12YC
10
J6C 823
U308, UB308, UV345, U372, UV392
.030J12YC
10
J6C 823
12
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
INTERNATIONAL
NATURAL & LP-GAS
1224 RL85G
.015
551 RHL79G 556 RTL85G
,015
U817, U817B, UT817, UT817B 14mm Heads
.015RL15B
535
U817, U817B, UT817, UT817B 18mm Heads
.015RF10C
129
UB264, UV266, U282, UV304
.030J12YC
10
J6C 823
UC135, UC135B, U164, U169
.015RD15Y
526
D15Y 515
UC221, UC263, UC301, U264, U281
.015RD15Y
526
D15Y 515
UC60, UC200
.015RD15Y
526
D15Y 515
UR501, U269, UR372, UV549
.020RJ6C
102
J6C 823
UV401, U450, UR450, UV461, U501
.030J12YC
10
J6C 823
JENBACHER
BR3
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
J208 8-Cyl., J212 12-Cyl.
.012RB76N
576
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
J216 16-Cyl., J312 12-Cyl.
.012RB76N
576
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
J316 16-Cyl., J320 20-Cyl.
.012RB76N
576
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
J612 12-Cyl. After 9/95
.012RB77CC
237
636 RB77WPC RB75N 643
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
J612 12-Cyl. Thru 8/95
.012RB76N
576
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
J616 16-Cyl. After 9/95
.012RB77CC
237
636 RB77WPC RB75N 643
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
J616 16-Cyl. Thru 8/95
.012RB76N
576
JLO - ROCKWELL
1224 RL85G
.020
551 RHL79G 556 RTL85G
,020
G49, L35, L77, LV298, MM25, MM40
.020RL82C
874
L82C 811
1224 RL85G
.020
551 RHL79G 556 RTL85G
,020
GA50 Updated Version, V49
.020RL82C
874
L82C 811
L101, L152, L197
.025D9
509
L252, L292, L297, L372
.025D9
509
JOHN DEERE
Gasoline
538 RH8C
,025
92, 115, 145, 165, 217, 232
854 RH10C
854 RH10C
,025
LUC, LUH, LUW, LUS
844 H10C
854 RH10C
,025
Series TA92, TB92, TA145, TA217
844 H10C
Natural & LP Gas
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
300 Series
.020RN5C
123
540 RTN79GN5C 120
341, 400, 500 Series
.025D14
514
233 RM82WPCC
.012
236 RHM78WPCC 596 RHM77N 223 RTM77PP
,015
400, 500 Series Natural & LP Gas
.015RM77N
519
217 RM77PP 222 RHM78PP 596 RHM77N 1201 RTM78N
6068NG
1206 RC78WP
.015
6076AFN30 (150 & 200 h.p.)
.015RC78YCC15
1209
218 RC78PYP
6081NG
538 RH8C
,025
92, 115, 145, 165, 217, 232
854 RH10C
Stationary Engine Type W, WSP
.025W18
518
J-W POWER
228 RW77PP
.015
577 RHW77N 552 RGC77N
,015
Superburn
.015RW77N
206
W77N 539
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
Superburn Pre-Cell
.020RN5C
123
540 RTN79GN5C 120
LISTER PETTER
13
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
LISTER PETTER
Alpha Series LPWG2, 3 & 4
.200RC9YC
344
HR2G, HR3G
.015D6
506
D78Y 625
LORAIN
30, 37, 40, 50
.025D16
516
UD16 555
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
A, L, O, R 7/8"-18 Heads
.012W85N
545
582 RW82P
LUFKIN
GSC
.025C97B
513
C97B 513
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
H1770, H2165 Normal Service
.012W85N
545
582 RW82P
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
H1770, H2165 Severe Service
.012RW80N
553
582 RW82P W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
H795 Severe Service
.012W85N
545
582 RW82P
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
HT333, HC333, H795, GSD, GSDH
.015W10
510
582 RW82P W85N 545
L333, L795, L1770, L2165, F280
.025W89D
589
M.E.P. INDUSTRIES
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
M.E.P.-6, -8, -10, -12
.015RM77N
519
217 RM77PP 222 RHM78PP 583 RHM83N 1201 RTM78NM82N 566
MAN NUTZFAHRZEUGE
530 RN79G
.012
E 0824 - E 301, E 302
530 RN79G
.012
E 0826 - E 301, E 302
1206 RC78WP
.012
E 0834
.012RC78YCC15
1209
218 RC78PYP
1206 RC78WP
.012
E 0836
.012RC78YCC15
1209
218 RC78PYP
530 RN79G
.012
E 2482, E 2842 E & LE
530 RN79G
.012
E 2843 LN
642 RN79G
.200
E 2866 DUH03
642 RN79G
530 RN79G
.012
E 2866 LUH01
530 RN79G
.012
E 2876
MAYTAG
Washing Machines
14mm Heads
.030RJ12C
592
J11C 511
'Multi-Motor' 1/2"-14 Pipe Heads
.02525
525
McCULLOCH
All Other Models
.030RJ8C
871
J8C 841
Models 77, 99
.030RJ6C
102
J6C 823
MINNEAPOLIS - MOLINE
GASOLINE
High-Compression
165-4A, 185-4A, 206-4A
.025RJ8C
871
J8C 841
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
403-4A, 605-6A, 1918-4A, 2714-6A
.015W10
510
582 RW82P W85N 545
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
BEU, DU, FEU, GU, GUA, HU
.015W10
510
582 RW82P W85N 545
CU, KEU, JU, 283-4A, 4256A 18mm Hds.
.025D9
509
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
CU, KEU, JU, 283-4A, 4256A 7/8"-18 Hds.
.015W10
510
582 RW82P W85N 545
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
LU, MEU, NEU, SEU, TAU, TEU
.015W10
510
582 RW82P W85N 545
Low-Compression
14
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
MINNEAPOLIS - MOLINE
GASOLINE
Low-Compression
165-4A, 185-4A, 206-4A
.025RJ8C
871
J8C 841
220-4, HD220-4A, M220-A4A
.025D14
514
336A-4A, HD425-6A
.025D14
514
403-4A, 605-6A 14mm Hds.
.025RJ19LM
868
J19LM 861
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
403-4A, 605-6A, 1918-4A, 2714-6A
.015W10
510
582 RW82P W85N 545
800-6A, 1210-12A 14mm Hds.
.025RJ19LM
868
J19LM 861
All Above Models w/18mm Heads
.025D14
514
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
BEU, DU, FEU, GU, GUA, HU
.015W10
510
582 RW82P W85N 545
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
CU, KEU, JU, 283-4A, 4256A
.015W10
510
582 RW82P W85N 545
HD504-6A, HD425-6A
.025D14
514
HD504A-6A, 605A-6A, 605B-6A
.025D14
514
HD605-6A, 800-6A
.025D14
514
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
HD800-6A, HD800A-6A, 1210-12A
.025D14
514
217 RM77PP 222 RHM78PP 1201 RTM78NRM77N 519
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
LU, MEU, NEU, SEU, TAU, TEU
.015W10
510
582 RW82P W85N 545
NATURAL & LP GAS
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
206-4A, 220-4, HD220-4A, M220-A4A
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
283-4A, HD504-6A
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
336A-4A, HD425-6A, HD504A-6A
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
403-4A, 605-6A, 1918-4A, 2714-6A
.015W10
510
582 RW82P W85N 545
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
425-6A
.015W10
510
582 RW82P W85N 545
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
605A-6A, 605B-6A, HD605-6A
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
800-6A, 1210-12A, 1600-12A
.015W10
510
582 RW82P W85N 545
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
BEU, DU, FEU, GU, GUA, HU
.015W10
510
582 RW82P W85N 545
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
CU, KEU, JU, 283-4A, 4256A
.015W10
510
582 RW82P W85N 545
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
HD800-6A, HD800A-6A, 1210-12A
.025RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
LU, MEU, NEU, SEU, TAU, TEU
.015W10
510
582 RW82P W85N 545
NORDBERG (HATCH & KIRK)
624 RHB81N 235 RTB77WPCC
,012
4FG Shielded Ignition w/ Pulse Generator
4FG Unshielded Ignition
.012B86N
542
226 RB76PP
.012
624 RHB81N 235 RTB77WPCC
,012
FSE96 Natural Gas
.012RB76N
576
Power Chief 4FG
.025D14
514
624 RHB81N 235 RTB77WPCC
,012
RTG Series Natural Gas
.012B86N
542
O.M.C.
Single And Twin Cylinder
.030RF11YC
22
OILWELL
1/2"-14 Pipe Heads
.02525
525
18mm Heads
.025K97F
597
OLIN
All Models OLIN
.02525
525
PERKINS
1230 FB77WPCC
15
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
PERKINS
634 RB77WPCC
.012
4000 Series
636 RB77WPC
244 RC78PYP21
.021
900 Series
G4-203
.025RN11YC4
322
N11YC 302
G4-236
.025RN12YC
404
N12YC 38
RATHBUN JONES
All Models RATHBUN JONES
.020K97F
597
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
Models w/G-402 Reducing Bushing
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
ROBIN (See Fuji-Robin)
ROILINE
ENGINES w/INTEGRAL COIL
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F1500, H2000, H2470 (Heavy Load)
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F1500, H2000, H2470 (Light Load)
.015RM79F
571
217 RM77PP 222 RHM78PP 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
H540, H844, H570, H884
.015RM79F
571
217 RM77PP 222 RHM78PP 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L3230, L3460, L4000 (Heavy Load)
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L3230, L3460, L4000 (Light Load)
.015RM79F
571
217 RM77PP 222 RHM78PP 1201 RTM78N
GASOLINE
A114, A288
.030RJ12C
592
J11C 511
H540, H844, H884
.030RJ6C
102
J6C 823
TH884, H570, TH570
.030RJ6C
102
J6C 823
High Compression Engines
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F1500, F1850, H2000, H2150, H2470
.025RM77N
519
217 RM77PP 222 RHM78PP 550 ED14 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L3000, L3230, L3460, L4000
.025RM77N
519
217 RM77PP 222 RHM78PP 572 XED14 1201 RTM78N
Low Compression Engines
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F1500, F1850, H2000, H2150, H2470
.025RM77N
519
217 RM77PP 222 RHM78PP 550 ED14 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L3000, L3230, L3460, L4000
.025RM77N
519
217 RM77PP 222 RHM78PP 572 XED14 1201 RTM78N
NATURAL & LP GAS
H540, H570, TH570, H884, TH884
.015J4C
825
ROLLS ROYCE
B Gas
KV-G4
K Gas
KV-G4
ROPER
Model 1900, CA301AR
.025DJ6J
851
Model 3700
.025CJ6
849
ROTAX
300cc Normal Service
.025D9
509
1224 RL85G
.020
551 RHL79G 556 RTL85G
,020
370cc Normal Service
.020RL86C
830
L86C 306
1224 RL85G
.020
551 RHL79G 556 RTL85G
,020
370cc Severe Service
.020RL82C
874
L82C 811
RUSTON
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
RK270GS Series
.012RW80N
553
582 RW82P W80N 580
SACHS
16
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
SACHS
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
504 Series, 505 Series, 508
.025RL86C
830
L86C 306
Stamo 277, 281, 293
.025D9
509
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
Stamo SL-2
.025RL82C
874
L82C 811
SACM
1206 RC78WP
.015
Model 175 1996 & up
.015RC78YCC15
1209
218 RC78PYP
1206 RC78WP
.015
Model UD30 Thru 1994
.015RC78YCC15
1209
218 RC78PYP
SOLAR TURBINE
550 ED14
,025
Mars, Centaur
572 XED14
627 F-6A-13
Sparton (Igniter)
627 F-6A-13
550 ED14
,025
Type H, Tauros
572 XED14
STOVER
1/2"-14 Pipe Heads
.02525
525
CT-1, -2, -3, -4
.025W18
518
587 H8C
,025
DV1, DV2, DVA2, XVH, 502 14mm Hds.
587 H8C
DV1, DV2, DVA2, XVH, 502 7/8"-18 Hds.
.025W18
518
DVA, DVA1
.025D14
514
K-1, K-6, K-8, MV-2, MV-5, MV-6, MV-7
.025W18
518
MVA, IXA
.030W14
569
STRUCK
Mini-Dozer
.030RJ8C
871
J8C 841
SUPERIOR
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
1706G2, 1712G1
.012RB77CC
237
636 RB77WPC RB75N 643
233 RM82WPCC
.012
236 RHM78WPCC 223 RTM77PP
,015
1965-58 GX825 Series
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
1970-63 VG825 Series*86
.012RW80N
553
582 RW82P W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
1970-63 VGT825 Series*86
.012RW80N
553
582 RW82P W80N 580
572 XED14
,025
1973-39 80G Series
.025D14
514
572 XED14
,025
1973-39 80GX Series
.025D14
514
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
1979-65 GT825 Series
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
1980-46 G510 Series
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
1980-51 G825 Series
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 223 RTM77PP
,015
1980-61 GT510 Series
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 223 RTM77PP
,015
1980-76 SGT Series
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
1980-79 GTL Series
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
1991-81 GTLA/B Series
.015D78Y
625
1991-81 GTLA/B Series (Light Use)
.015RD15Y
526
D15Y 515
1991-81 SGTA/B Series
.015D78Y
625
1991-81 SGTLA/B Series (Light Use)
.015RD15Y
526
D15Y 515
2400 G Series
.012RB75N
643
TELEDYNE (See Continental or Wisconsin)
TRANSAMERICA DELAVAL (See Delaval)
17
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
UNIVERSAL
18mm Heads
.025D14
514
7/8"-18 Heads
.030W14
569
Atomic Four
.030RJ8C
871
J8C 841
VOLKSWAGEN
ADF, ADH w/1.8L Engs.
.035RN9YC
415
N9YC 300
EA111 w/1.0L Engs.
.035RN9YC
415
N9YC 300
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
Models 122, 124A Gasoline
.025RL86C
830
L86C 306
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
Models 122, 124A Natural & LPG
.025RL82C
874
L82C 811
WARTSILA
1206 RC78WP
.015
Model 175 After 1994
RC78YCC15
1209
218 RC78PYP
1230 FB77WPCC
Model 34SG
1230 FB77WPCC
Model W20V
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
Model W25SG, W28SG, W34SG
.012RB77CC
237
636 RB77WPC RB75N 643
WAUKESHA
AT SERIES
Inline-8
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,012
8L-AT25GL/AT27GL (1/2" Reach Heads)
.012RM77N
640
217 RM77PP 222 RHM78PP 1201 RTM78N
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
8L-AT25GL/AT27GL (13/16" Reach Heads)
.012RB77CC
237
636 RB77WPC RB75N 643
V-12
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,012
12V-AT25GL/AT27GL (1/2" Reach Heads)
.012RM77N
640
217 RM77PP 222 RHM78PP 1201 RTM78N
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
12V-AT25GL/AT27GL (13/16" Reach Heads)
.012RB77CC
237
636 RB77WPC RB75N 643
GASOLINE
14mm Heads
538 RH8C
,025
135G, 135GK, 135GKB, 135GZB
587 H8C
557 XEJ8
,025
135GZ, 140GZ, 145GZ, F554G, F817G
.030RJ8C
871
557 XEJ8J8C 841
538 RH8C
,025
140G, 140GK, 140GKB, 140GZB
587 H8C
538 RH8C
,025
145G, 145GK, 145GKB, 145GZB
587 H8C
557 XEJ8
,025
Cranes, Carriers, Power Shovels
.030RJ8C
871
557 XEJ8J8C 841
F265GA, F283G, VRG265
.025RN11YC4
322
N11YC 302
557 XEJ8
,025
FC, ICK, 6BZ, 6MZA, 6SRKR, 6WAK
.030RJ8C
871
557 XEJ8J8C 841
557 XEJ8
,025
Generator Sets
.030RJ8C
871
557 XEJ8J8C 841
H540, H570, H844, H884, H884G
.025RJ6C
102
J6C 823
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
VRG220, VRG330
.025RN12YC
404
540 RTN79GN12YC 38
VRG283, VRG310
.025RN11YC4
322
N11YC 302
18mm Heads
18
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
WAUKESHA
GASOLINE
18mm Heads
140GK, 140GS, 145GK, 145GS
.025D16
516
UD16 555
180G, 180GB, 180GL
.025D14
514
180GS, 185GS, 190GS, FC
.025D16
516
UD16 555
185GL, 185GLB, 190G, 190GL, 190GLB
.025D14
514
195G, 195GK, 195GKA, 195GL
.025D14
514
6BZ, LRORB, VLRORB, ICK
.025D14
514
6LRZ, 6LRZB, 6MZA, 6MZR, 6NK
.025D14
514
6NKR, 6NKRB, 6SRKR, 6WAK, 6WAKB
.025D14
514
CFR
.025D16
516
UD16 555
D155G, D176G, VRG232
.025D16
516
XED16 563
F1197GR, VRG155
.025D14
514
XED14 572
7/8"-18 Heads
6LRO, 6SRKR, LR0RB, XAH
.030W14
569
INTERMEDIATE SERIES
F1197G
.025D14
514
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F1950GR
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78NM82N 566
18mm Heads
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
140GK, 145GK, FC
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
180G, 180GB, 180GKB, 185GLB
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
190G, 190GLB, 196G, 195GK
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
6BZ, 6LRZ, 6LRZB, 6MZA, 6MZR, ICK
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
6NK, 6WAK, 6WAKB, NKRB, WAKR, LRORB
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F1197GRSI, F1905GRSI, Generator Set
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
F1850G, H2475G, L3711G LPG
.025D9
509
F1850G, H2475G, L3711G Natural Gas
.025D14
514
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F2894G, F2894GRSI, F3520G, L5100GR
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78NM82N 566
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
H1077G, H1077GSI, L1616G, L1616GSI
.025D9
509
540 RTN79G
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L5100GRSI, L5788GR
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78NM82N 566
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L5788GRSI, L7040G
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78NM82N 566
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L7042GSIE, F3521GSIE
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
VRN232, VRN155
.025D14
514
7/8" - 18 HEADS
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,015
6SRKR, XAH, LRORB
.015W10
510
582 RW82P W85N 545
Inline-6
F817G
.030RJ6C
102
J6C 823
VSG Series
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
F11FG F11GSI/GSID
540 RTN79G
NATURAL & LP GAS
14mm Heads
135G, 140G, 145G
.020RJ6C
102
J6C 823
19
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
WAUKESHA
NATURAL & LP GAS
14mm Heads
135GZ, 140GZ, 145GZ
.020RJ6C
102
J6C 823
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
H1077G, H1077GSI, L1616G, L1616GSI
.025
540 RTN79G
ICK, F554G, H884G
.020RJ6C
102
J6C 823
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
P2154G, P2154GSI
540 RTN79G
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
VRG220, VRG330
.025RN5C
123
540 RTN79GN5C 120
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
VRN265, VRN283, VRN310
.020RN5C
123
540 RTN79GN5C 120
VGF SERIES
Inline-6
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
F18G, F18GL/GLD
.012RB77CC
237
636 RB77WPC RB75N 643
Inline-8
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
H24G, H24GL/GLD
.012RB77CC
237
636 RB77WPC RB75N 643
V-12
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
L36GL/GLD
.012RB77CC
237
636 RB77WPC RB75N 643
V-16
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
P48GL/GLD
.012RB77CC
237
636 RB77WPC RB75N 643
VHP SERIES
Inline-6
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,012
2895GL (1/2" Reach Heads)
.012RM77N
640
217 RM77PP 222 RHM78PP 1201 RTM78N
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
2895GL (13/16" Reach Heads)
.012RB77CC
237
636 RB77WPC RB75N 643
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,012
3521GL (1/2" Reach Heads)
.012RM77N
640
217 RM77PP 222 RHM78PP 1201 RTM78N
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
3521GL (13/16" Reach Heads)
.012RB77CC
237
636 RB77WPC RB75N 643
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F2895G, F2895GSI
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F3521G, F3521GSI
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
V-12
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,012
5108GL (1/2" Reach Heads)
.012RM77N
640
217 RM77PP 222 RHM78PP 1201 RTM78N
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
5108GL (13/16" Reach Heads)
.012RB77CC
237
636 RB77WPC RB75N 643
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,012
5790GL (1/2" Reach Heads)
.012RM77N
640
217 RM77PP 222 RHM78PP 1201 RTM78N
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
5790GL (13/16" Reach Heads)
.012RB77CC
237
636 RB77WPC RB75N 643
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,012
7042GL (1/2" Reach Heads)
.012RM77N
640
217 RM77PP 222 RHM78PP 1201 RTM78N
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
7042GL (13/16" Reach Heads)
.012RB77CC
237
636 RB77WPC RB75N 643
20
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
WAUKESHA
VHP SERIES
V-12
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L5108G, L5108GSI, L5790G
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L5790GSI, L7042G, L7042GSI
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
V-16
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
5115GL
.012RB77CC
237
636 RB77WPC RB75N 643
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
9390G, P9390GSI
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,012
9390GL (1/2" Reach Heads)
.012RM77N
640
217 RM77PP 222 RHM78PP 1201 RTM78N
1230 FB77WPCC
634 RB77WPCC
.012
624 RHB81N 235 RTB77WPCC
,012
9390GL (13/16" Reach Heads)
.012RB77CC
237
636 RB77WPC RB75N 643
VSG SERIES
18mm Heads
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
140GK, 145GK, FC
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
180G, 180GB, 180GKB, 185GLB
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
190G, 190GLB, 195G, 195GK
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
6BZ, 6LRZ, 6LRZB, 6MZA, 6MZR, ICK
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
6NK, 6WAK, 6WAKB, NKRB, WAKR, LRORB
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78ND14N 529
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F1197GRSI, F1905GRSI, Generator Set
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78N
F1850G, H2475G, L3711G LPG
.025D9
509
F1850G, H2475G, L3711G Natural Gas
.025D14
514
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
F2894G, F2894GRSI, F3520G, L5100GR
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78NM82N 566
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
H1077G, H1077GSI, L1616G, L1616GSI
.025D9
509
540 RTN79G
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L5100GRSI, L5788GR
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78NM82N 566
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L5788GRSI, L7040G
.015RM77N
519
217 RM77PP 222 RHM78PP 1201 RTM78NM82N 566
233 RM82WPCC
.012
236 RHM78WPCC 234 RHM78N 223 RTM77PP
,015
L7042GSIE, F3521GSIE
.015RM77N
519
217 RM77PP 222 RHM78WPCC 1201 RTM78N
VRN232, VRN155
.025D14
514
Inline-6
530 RN79G
.015
575 RHN79G 1232 RTN79WYP
,015
F11G, F11GSI/GSID
540 RTN79G
WEST BEND
854 RH10C
,025
All Other Models (Light Load)
844 H10C
538 RH8C
,025
All Other Models (Normal Load)
587 H8C
All Other Models (Severe Load)
.030RJ6C
102
J6C 823
Models 610, 820
.030RL82C
874
L82C 811
WHITE ENGINES, INC. (See Hercules)
WHITE-SUPERIOR (See Superior)
WISCONSIN
ACN, AEN, AENLD
.030D16
516
D16J 564
AEH, AENL, AENS, AFH, AGH, AHH
.030D16
516
D16J 564
21
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
WISCONSIN
AGND
.025D21
502
All 18mm Heads Using LP Gas
.025D9
509
BKN, S7D, S8D, S10D, S12D, S14D, TE
.030D16
516
D16J 564
TF, TH, THD, TRA10D, TRA12D, THPD, TJD
.030D16
516
D16J 564
THOM, VE4, VF4, VE4, VF4D
.030D16
516
D16J 564
V460D, V461D, V465D
.025RN12YC
404
N12YC 38
VG4D, VH4, VH4D, W2-280
.030D16
516
D16J 564
VH4DM, TR10D, W4-1770, W2-1230
.030D16
516
D16J 564
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
W2-1230 Serial #5996538 & Up
.020RN5C
123
540 RTN79GN5C 120
530 RN79G
.020
575 RHN79G 1232 RTN79WYP
,020
W2-1235, W4-2460, W2-1250
.020RN5C
123
540 RTN79GN5C 120
W2-880, W2-1230 Thru Serial #5995537
.030D16
516
D16J 564
WISCONSIN-ROBIN
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
EY18-3W, EY25W Gasoline
.025RL86C
830
L86C 306
EY18-3W, EY25W Kerosene
.025L92YC
806
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
EY18W, EY21W, EY27W, EY44W
.025RL86C
830
L86C 306
W1-080, W1-150, W1-230, W1-280
.025RL87YC
327
L87YC 312
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
W1-145, W1-390, W1-185, W1-340
.025RL86C
830
L86C 306
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
WT-125V, W1-450V
.025RL86C
830
L86C 306
WITTE (See Oilwell)
1224 RL85G
.015
551 RHL79G 556 RTL85G
,015
G-260
.015RL82C
874
L82C 811
WORTHINGTON
AG, BG, BBG, EEGX
.030W14
569
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
CG, CCG, CCGX, DG, DDG
.012W85N
545
582 RW82P
DDGX Gasoline
.030RJ6C
102
J6C 823
DDGX Natural Gas
.015J4C
825
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
DHG, DRG, EEG
.012W85N
545
582 RW82P
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
EHG, LFC, LCE
.012W85N
545
582 RW82P
LTC 18X25, & LTC 20X25
.025W18
518
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
ML Turbocharged
.012RW80N
553
582 RW82P W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
SDHG & SDHP Severe Service
.012RW80N
553
582 RW82P W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
SLHC, SLHCA, SLHP
.012RW80N
553
582 RW82P W80N 580
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
SUTC, SEGH, SWG
.012RW80N
553
582 RW82P W80N 580
SWG, SOME, SEHG w/Clamp in plugs
.012RS79N
598
1207 RW80PP
.012
1204 RHW80PP 532 RHW80N 638 RTW80N
,012
UTC
.012RW80N
553
582 RW82P W80N 580
578 REW82P 534 REW80N
,012
UTC Shielded
YAMAHA
1224 RL85G
.025
551 RHL79G 556 RTL85G
,025
AS110
.025RL86C
830
L86C 306
MF180, MF260, MF410
.025RL87YC
327
L87YC 312
22
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS
MAKE
YEAR and MODEL
PREMIUM LONG LIFE COPPER PLUS
UNSHIELDED
PREMIUM
SHIELDED 3/4''-20
SHIELDED
3/4''-20
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
GAP
STOCK
NO.
PLUG
TYPE
STOCK
NO.
PLUG
TYPE
INTEGRAL COIL
TYPE 13/16''-20
STOCK
NO.
PLUG
TYPE
GAP
Yanmar
Y12, Y18, Y24, Y33
.030RN14YC
405
YOUNG
All Models YOUNG
.025W18
518
23
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS-5/8''-24 SHIELDED
STOCK
NO.
PLUG
TYPE
GAP
MAKE
YEAR AND MODEL
SHIELDED 5/8''-24
STOCK
NO.
PLUG
TYPE
GAP
MAKE
YEAR AND MODEL
SHIELDED 5/8''-24
BUDA (see Allis-Chalmers)
CASE
GASOLINE
188G, 301G, 377G 563 XED16 0.025
A284, A377, 159G 563 XED16 0.025
NATURAL & LP GAS
188G, 301G, 377G 568 REM77N 0.012
A284, A377, 159G 568 REM77N 0.012
CATERPILLAR
STARTING ENGINE FOR DIESELS
D320, D326, D337 18mm Heads 563 XED16 0.025
D339, D342, D343, D353 18mm Heads 563 XED16 0.025
D375, D379, D397, D398 18mm Heads 563 XED16 0.025
CLARK (see Dresser Clark)
CLEVELAND DIESEL
Model 358 578 REW82P 0.012
CLIMAX
GASOLINE
CE101, CE106, CE264 Normal Service 568 REM77N 0.012
CE46, CE66, CE81, CE96 Normal Service 550 ED14 0.025
CE46, CE66, CE81, CE96 Normal Service 572 XED14 0.025
R-165 Snowplow Only Normal Service 563 XED16 0.025
V-80, V-85, V-122, V-125 8.2:1 C.R. Normal Service 550 ED14 0.015
V-80, V-85, V-122, V-125 8.2:1 C.R. Normal Service 572 XED14 0.015
V-80, V-85, V-122, V-125 9.4:1 C.R. Normal Service 568 REM77N 0.012
CONTINENTAL
NATURAL & LP GAS
C46, C66, C96, C106, C255 505 ED89D 0.025
NORMAL SERVICE
B405, 4124, 4140, 4162, 4163, 6226 563 XED16 0.025
B6244, 6245, 6277, 6371, 6405, 6427 563 XED16 0.025
C46, C66 563 XED16 0.025
E223, F124, 135, 140, 162, 163, 186 563 XED16 0.025
F209, 226, 227, 244, 245 563 XED16 0.025
G134, 157, 176, H227, 243, 260 563 XED16 0.025
J382 TO 403, T371 TO 247 563 XED16 0.025
M6271, 6290, 6330, 6363, OS220 563 XED16 0.025
R6513, 6572, 6602, U6501 18mm Heads 563 XED16 0.025
RS542, T6371, 6427, TC56 563 XED16 0.025
Y69, Y91, Y112, Y4069, 4091, 4112 563 XED16 0.025
Z105 TO 120, ZA120 563 XED16 0.025
COOPER - BESSEMER
ENG, GNG 568 REM77N 0.015
GAW, GMR, GMV, JS 578 REW82P 0.012
GS 563 XED16 0.025
5
/
8" REACH
GMW, GMX, V-250, V-275, W330 578 REW82P 0.012
GMWC, GMWA 578 REW82P 0.012
GMXE, GMWA, GMXH, W330 578 REW82P 0.012
Z330 578 REW82P 0.012
COOPER - BESSEMER
G402 REDUCING BUSHING
GDJ, GMA, GMB, GMC 568 REM77N 0.015
GDT, GFB, GFE, GFK 568 REM77N 0.015
COOPER ENERGY SERVICES (see Superior)
CP - CHICAGO PNEUMATIC
9CPG High Comperssion 534 REW80N 0.012
9CPG Low Comperssion 563 XED16 0.025
DECO-GRAND
AU7B, DE8 567 XEJ12 0.025
DORMAN
12S, 12STCWG, 12STCAG, 6PG, 12PG 568 REM77N 0.015
12SG 568 REM77N 0.015
6PG, 12PG 568 REM77N 0.015
DRESSER CLARK
BA, HBA, HMA, HLA, HRA, MA 578 REW82P 0.012
RA, TRA, TLA, TCV 578 REW82P 0.012
SUPER & TURBOCHARGED
HBAT, HLAT, HRAT, TRA, TLA 578 REW82P 0.012
TCVB, TCVC, TVM, VMC 578 REW82P 0.012
TLAB, TLAC, TLAD, TPV, TCVA 578 REW82P 0.012
TVC, HSRA, RAS, TMB 578 REW82P 0.012
DRESSER RAND
TCV, TCVA, TCVD, TLAD 578 REW82P 0.012
ENTERPRISE
7
/
8" - 18 HEADS
GSM-36, 38 578 REW82P 0.012
CENTER OF HEAD
TDSG-36-6-38 578 REW82P 0.012
FAIRBANKS MORSE
38D8-1 SERIES 568 REM77N 0.012
FICHTEL-SACH (see Sachs)
GENERAL MOTORS
16-358HN, 16-358-X 578 REW82P 0.012
HALL SCOTT
GASOLINE
1091-OS Intake 563 XED16 0.025
136, 180, 190, 504 Exhaust 550 ED14 0.025
136, 180, 190, 504 Exhaust 572 XED14 0.025
200-0, 201-0, 400-0 Regular 550 ED14 0.025
200-0, 201-0, 400-0 Regular 572 XED14 0.025
400-0, 470, 480, 6156 Exhaust 550 ED14 0.025
400-0, 470, 480, 6156 Exhaust 572 XED14 0.025
440, 2269-0, 1091-OS Ehaust 550 ED14 0.025
24
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS-5/8''-24 SHIELDED
STOCK
NO.
PLUG
TYPE
GAP
MAKE
YEAR AND MODEL
SHIELDED 5/8''-24
STOCK
NO.
PLUG
TYPE
GAP
MAKE
YEAR AND MODEL
SHIELDED 5/8''-24
HALL SCOTT
440, 2269-0, 1091-OS Ehaust 572 XED14 0.025
6156-B1, 6182-B1 Intake 572 XED14 0.025
6156-B1, 6182-B1 Intake 550 ED14 0.025
779-GHI 563 XED16 0.025
F3, G1, G2, 6182 Exhaust 550 ED14 0.025
F3, G1, G2, 6182 Exhaust 572 XED14 0.025
G1, G2, FE, 1091G1 Exhaust 550 ED14 0.025
G1, G2, FE, 1091G1 Exhaust 572 XED14 0.025
NATURAL & LP GAS
400-0, 470, 480, 855, 935 Intake 550 ED14 0.025
400-0, 470, 480, 855, 935 Intake 572 XED14 0.025
HERCULES
1091-OS Exhaust 550 ED14 0.025
1091-OS Exhaust 572 XED14 0.025
1091-OS Intake 563 XED16 0.025
HXE, HXLEF 563 XED16 0.025
NATURAL & LP GAS
6156, 6182 Gas Intake 550 ED14 0.025
6156, 6182 Gas Intake 572 XED14 0.025
HOPE (see Cooper-Bessemer)
INGERSOLL-RAND
NATURALLY ASPIRATED
PKVG, KVGR, PKVGR 578 REW82P 0.012
Turbicharged Models 578 REW82P 0.012
XVG, PVG, JVG, SVG, KVG, PJVG, PSVG 578 REW82P 0.012
INTERNATIONAL
GASOLINE
U164, U169, U175 NORMAL SERVICE 563 XED16 0.025
U2, U2A, UC60, UC135 NORMAL SERVICE 563 XED16 0.025
UC135B, UC153 NORMAL SERVICE 563 XED16 0.025
UC175, UC200, UC301 NORMAL SERVICE 563 XED16 0.025
UC221, UC263 Shielded NORMAL SERVICE 563 XED16 0.025
JOHN DEERE
341, 400, 500 Series 550 ED14 0.025
341, 400, 500 Series 572 XED14 0.025
NATURAL & LP GAS
400, 500 Series 568 REM77N 0.012
LORAIN
30, 37, 40, 50 563 XED16 0.025
A, L, O, R 7/8"-18 HEADS 578 REW82P 0.012
LUFKIN
NORMAL SERVICE
H795 578 REW82P 0.012
SEVERE SERVICE
H1770, H2165 578 REW82P 0.012
H1770, H2165 578 REW82P 0.012
M.E.P. INDUSTRIES
M.E.P. -6, -8, 10, -12 Unshielded 568 REM77N 0.015
MINNEAPOLIS - MOLINE
GASOLINE
165-4A, 185-4A, 206-4A Low Comperssion 563 XED16 0.025
220-4, HD220-4A, M220-A4A Low Comperssion 550 ED14 0.025
220-4, HD220-4A, M220-A4A Low Comperssion 572 XED14 0.025
336A-4A, HD425-6A Low Comperssion 550 ED14 0.025
336A-4A, HD425-6A Low Comperssion 572 XED14 0.025
ALL ABOVE MODELS W/18mm HEADS Low
Comperssion
572 XED14 0.025
ALL ABOVE MODELS W/18mm HEADS Low
Comperssion
550 ED14 0.025
HD504-6A, HD425-6A Low Comperssion 550 ED14 0.025
HD504-6A, HD425-6A Low Comperssion 572 XED14 0.025
HD504A-6A, 605A-6A, 605B-6A Low Comperssion 550 ED14 0.025
HD504A-6A, 605A-6A, 605B-6A Low Comperssion 572 XED14 0.025
HD605-6A, 800-6A Low Comperssion 572 XED14 0.025
HD605-6A, 800-6A Low Comperssion 550 ED14 0.025
HD800-6A, HD800A-6A, 1210-12A Low Comperssion 550 ED14 0.025
HD800-6A, HD800A-6A, 1210-12A Low Comperssion 572 XED14 0.025
NATURAL & LP GAS
206-4A, 220-4, HD220-4A, M220-A4A 568 REM77N 0.025
283-4A, HD504-6A 568 REM77N 0.025
336A-4A, HD425-6A, HD504A-6A 568 REM77N 0.025
605A-6A, 605B-6A, HD605-6A 568 REM77N 0.025
HD800-6A, HD800A-6A, 1210-12A 568 REM77N 0.025
NORDBERG (Hatch & Kirk)
Power Chief 4FG 572 XED14 0.025
Power Chief 4FG 550 ED14 0.025
RATHBUN JONES
Models w/G402 Reducing Bushing 568 REM77N 0.015
ROBIN (see Fuji-Robin)
ROILINE
F1500, H2000, H2470 (Light Load) 568 REM77N 0.012
H540, H844, H570, H884 568 REM77N 0.012
L3230, L3460, L4000 (Light Load) 568 REM77N 0.012
GASOLINE
F1500, F1850, H2000, H2150, H2470 High Comperssion 568 REM77N 0.012
F1500, F1850, H2000, H2150, H2470 Low Comperssion 550 ED14 0.025
F1500, F1850, H2000, H2150, H2470 Low Comperssion 572 XED14 0.025
L3000, L3230, L3460, L4000 Low Comperssion 550 ED14 0.025
L3000, L3230, L3460, L4000 High Comperssion 568 REM77N 0.012
L3000, L3230, L3460, L4000 Low Comperssion 572 XED14 0.025
Shielded Plug Low Comperssion 550 ED14 0.025
Shielded Plug High Comperssion 550 ED14 0.025
Shielded Plug High Comperssion 572 XED14 0.025
Shielded Plug Low Comperssion 572 XED14 0.025
RUSTON
RK270GS Series 578 REW82P 0.012
SOLAR TURBINE
Mars, Centaur 572 XED14 0.025
25
COMMERCIAL, STATIONARY AND GAS ENGINE APPLICATIONS-5/8''-24 SHIELDED
STOCK
NO.
PLUG
TYPE
GAP
MAKE
YEAR AND MODEL
SHIELDED 5/8''-24
STOCK
NO.
PLUG
TYPE
GAP
MAKE
YEAR AND MODEL
SHIELDED 5/8''-24
SOLAR TURBINE
Mars, Centaur 550 ED14 0.025
Type H, Tauros 550 ED14 0.025
Type H, Tauros 572 XED14 0.025
STOVER
DVA, DVA1 550 ED14 0.025
DVA, DVA1 572 XED14 0.025
SUPERIOR
1965-58 GX825 Series 568 REM77N 0.015
1970-63 VG825 Series86 578 REW82P 0.012
1970-63 VGT825 Series86 578 REW82P 0.012
1973-39 80G Series 550 ED14 0.025
1973-39 80G Series 572 XED14 0.025
1973-39 80GX Series 572 XED14 0.025
1973-39 80GX Series 550 ED14 0.025
1979-65 GT825 Series 568 REM77N 0.015
1980-46 G510 Series 568 REM77N 0.015
1980-51 G825 Series 568 REM77N 0.015
1980-61 GT510 Series 568 REM77N 0.015
1980-76 SGT Series 568 REM77N 0.015
1980-79 GTL Series 568 REM77N 0.015
2400 G Series 572 XED14 0.025
2400 G Series 550 ED14 0.025
TELEDYNE (see Continental)
UNIVERSAL
18mm Heads 550 ED14 0.025
18mm Heads 572 XED14 0.025
WAUKESHA
AT Series
12V-AT25GL/AT27GL (1/2' reach heads) 568 REM77N 0.012
GASOLINE
140GK, 140GS, 145GK, 145GS 14mm Heads 563 XED16 0.025
180G, 180GB, 180GL 14mm Heads 572 XED14 0.025
180G, 180GB, 180GL 14mm Heads 550 ED14 0.025
180GS, 185GS, 190GS, FC 14mm Heads 563 XED16 0.025
185GL, 185GLB, 190G, 190GL, 190GLB 14mm Heads 550 ED14 0.025
185GL, 185GLB, 190G, 190GL, 190GLB 14mm Heads 572 XED14 0.025
195G, 195GK, 195GKA, 195GL 14mm Heads 550 ED14 0.025
195G, 195GK, 195GKA, 195GL 14mm Heads 572 XED14 0.025
6BZ, LRORB, VLRORB, ICK 14mm Heads 550 ED14 0.025
6BZ, LRORB, VLRORB, ICK 14mm Heads 572 XED14 0.025
6LRZ, 6LRZB, 6MZA, 6MZR, 6NK 14mm Heads 550 ED14 0.025
6LRZ, 6LRZB, 6MZA, 6MZR, 6NK 14mm Heads 572 XED14 0.025
6NKR, 6NKRB, 6SRKR, 6WAK, 6WAKB 14mm Heads 550 ED14 0.025
6NKR, 6NKRB, 6SRKR, 6WAK, 6WAKB 14mm Heads 572 XED14 0.025
CFR 14mm Heads 563 XED16 0.025
D155G, D176G, VRG232 14mm Heads 563 XED16 0.025
F1197GR, VRG155 14mm Heads 550 ED14 0.025
F1197GR, VRG155 14mm Heads 572 XED14 0.025
Shielded type for D14 14mm Heads 550 ED14 0.025
Shielded type for D14 14mm Heads 572 XED14 0.025
WAUKESHA
Shielded type for D16 14mm Heads 563 XED16 0.025
Shielded type for J8C 14mm Heads 557 XEJ8 0.025
INLINE 8
8L-AT25GL/AT27GL (1/2' reach heads) 568 REM77N 0.012
INTERMEDIATE SERIES
F1197G Inline 6 572 XED14 0.025
F1197G Inline 6 550 ED14 0.025
F1905GR Inline 6 568 REM77N 0.015
VGF SERIES
140GK, 145GK, FC 18mm Heads 568 REM77N 0.015
180G, 180GB, 180GKB, 185GLB 18mm Heads 568 REM77N 0.015
1850G, H2475G, L3711G Natual Gas 18mm Heads 550 ED14 0.025
1850G, H2475G, L3711G Natual Gas 18mm Heads 572 XED14 0.025
190G, 190GLB, 195G, 195GK 18mm Heads 568 REM77N 0.015
6BZ, 6LRZ, 6LRZB, 6MZA, 6MZR, ICK 18mm Heads 568 REM77N 0.015
6NK, 6WAK, 6WAKB, NKRB, WAKR, LRORB 18mm
Heads
568 REM77N 0.015
F1197GRSI, F1905GRSI Generator Set 18mm Heads 568 REM77N 0.015
F2894G, F2894GRSI, F3520G, L5100GR 18mm Heads 568 REM77N 0.015
L5100GRSI, L5788GR 18mm Heads 568 REM77N 0.015
L5788GRSI, L7040G 18mm Heads 568 REM77N 0.015
L7042GSIE, F3521GSIE 18mm Heads 568 REM77N 0.015
VRN232, VRN155 18mm Heads 550 ED14 0.025
VRN232, VRN155 18mm Heads 572 XED14 0.025
VHP Series
2895GL (1/2' reach heads) Inline 6 568 REM77N 0.012
3521GL (1/2' reach heads) Inline 6 568 REM77N 0.012
5108GL (1/2" reach heads) V12 Series 568 REM77N 0.012
5790GL (1/2' reach heads) V12 Series 568 REM77N 0.012
7042GL (1/2' reach heads) V12 Series 568 REM77N 0.012
9390G, P9390GSI V16 Series 568 REM77N 0.012
9390GL (1/2" reach heads) V16 Series 568 REM77N 0.012
F2895G, F2895GSI Inline 6 568 REM77N 0.012
F3251G, F3521GSI Inline 6 568 REM77N 0.012
L5108G, L5108GSI, L5790G V12 Series 568 REM77N 0.012
L5790GSI, L7042G, L7042GSI V12 Series 568 REM77N 0.012
WHITE ENGINE, INC. (see Hercules)
WHITE-SUPERIOR (see Superior)
WORTHINGTON
CG, CCG, CCGX, DG, DDG 578 REW82P 0.012
DHG, DRG, EEG 578 REW82P 0.012
EHG, LFC, LCE 578 REW82P 0.012
ML Turbocharged 578 REW82P 0.012
SDHG & SDHP Severe Service 578 REW82P 0.012
SLHC, SLHCA, SLHP 578 REW82P 0.012
SUTC, SEGH, SWG 578 REW82P 0.012
UTC 578 REW82P 0.012
26
INDUSTRIAL SPARK PLUG GAPS
PLUG
TYPE
AVAIL.
GAP
PACK
QTY.
REACH
INCHES
HEX
INCHES
TERMINAL
THREAD
NUT
REPL.
GASKET
STK.
NO.
PLUG
TYPE
AVAIL.
GAP
PACK
QTY.
REACH
INCHES
HEX
INCHES
TERMINAL
THREAD
NUT
REPL.
GASKET
STK.
NO.
10mm THREAD DIAMETER
877 Y82 .020 8 .312 14mm NONE NONE
1-1 / 8" - 12 THREAD DIAMETER
598 RS79N .012 8 .625 1 BN-9A FGS-8A
12.7mm THREAD DIAMETER
525 25 .030 8 1.00 .938 NONE NONE
14mm THREAD DIAMETER
1206 RC78WP .012 6 .750 5/8 NONE N-678
1208 RC78PYP .017 6 .750 5/8 NONE N-678
1209 RC78YCC15 .015 6 .750 5/8 NONE N-678
1213 RC78PYP .012 4 .750 5/8 NONE N-678
1218 RC78WYP11 .011 6 .750 5/8 NONE N-678
1220 RTV85G .025 4 .460
Taper
Seat
5/8 BN-9A N-678
1221 RC78WYP15 .015 6 .750 5/8 NONE N-678
1224 RL85G .015 4 .500 13/16 BN-9A N-678
1232 RTN79WYP .015 4 .750 15/16 NONE N-678
218 RC78PYP .015 6 .750 5/8 NONE N-678
219 RC78PYP .021 6 .750 5/8 NONE N-678
224 RN79G1 .010 8 .750 13/16 NONE N-678
230 RX85PYP .012 6 .500 5/8 NONE N-678
232 RC78PYP17 .017 6 .750 5/8 NONE N-678
241 RC78PYP25 .025 6 .750 5/8 NONE N-678
243 RC78PYP15 .015 6 .750 5/8 NONE N-678
244 RC78PYP21 .021 6 .750 5/8 NONE N-678
247 RN79PYP17 .017 4 .750 13/16 NONE N-678
248 RN79PYP25 .025 4 .750 13/16 NONE N-678
502 D21 .027 6 .500 7/8 NONE N-678
517 XMJ17 .025 8 .375 13/16 SHIELDED N-678
522 REL89G .015 1 .500 13/16 SHIELDED N-678
530 RN79G .015 8 .750 13/16 NONE N-678
535 RL15B .015 8 .500 13/16 BN-9A N-678
540 RTN79G .015 8 .750 15/16 BN-9A N-678
551 RHL79G .015 1 .500 7/8 SHIELDED N-678
556 RTL85G .015 8 .500 13/16 BN-9A N-678
557 XEJ8 .025 8 .375 13/16 SHIELDED N-678
567 XEJ12 .025 8 .375 13/16 SHIELDED N-678
573 XMJ20 .025 8 .375 13/16 SHIELDED N-678
575 RHN79G .015 1 .750 7/8 SHIELDED N-678
588 XMJ14 .025 8 .375 13/16 SHIELDED N-678
594 TJ83 .025 8 .375 13/16 BN-9A N-678
599 J99 NA 8 .375 13/16 NONE N-678
603 XML12 .025 8 .500 13/16 SHIELDED N-678
610 REL88B .020 8 .500 13/16 SHIELDED N-678
612 RML12 .025 8 .500 13/16 SHIELDED N-678
614 XEN14 .025 8 .750 7/8 SHIELDED N-678
616 XMN12 .025 8 .750 7/8 SHIELDED N-678
633 XML15Y .025 8 .500 13/16 SHIELDED N-678
642 RN79G .025 8 .750 13/16 NONE N-678
14mm THREAD DIAMETER
644 RJ88P .015 8 .375 13/16 BN-9A N-678
18mm THREAD DIAMETER
1201 RTM78N .012 4 .531 7/8 NONE A-678
1202 RTM78N .019 4 .531 7/8 NONE A-678
1203 RTB78N .012 4 .531 7/8 NONE A-678
1205 RB77WPCC .007 4 .813 7/8 NONE A-678
1219 KB75N .012 4 .813 7/8 NONE A-678
1225 RTM82WPCC .012 4 .500 7/8 NONE NONE
1230 FB77WPCC .012 4 .813 7/8 None A-678
204 D14N .025 8 .531 7/8 BN-9A A-678
213 RHM77N .020 8 .531 7/8 SHIELDED A-678
214 RTM77N .012 8 .531 1 BN-9A A-678
217 RM77PP .015 8 .531 7/8 BN-9A A-678
222 RHM78PP .012 4 .531 7/8 SHIELDED A-678
223 RTM77PP .012 4 .531 7/8 BN-9A A-678
225 RB75PP .012 4 .813 7/8 BN-9A A-678
226 RB76PP .012 4 .813 7/8 BN-9A A-678
229 KB77WPCC .012 4 .813 7/8 NONE A-678
233 RM82WPCC .012 4 .531 7/8 BN-9A A-678
234 RHM78N .015 4 .531 7/8 SHIELDED A-678
235 RTB77WPCC .012 4 .813 1 BN-9A A-678
236 RHM78WPCC .012 4 .531 7/8 SHIELDED A-678
237 RB77CC .012 4 .813 7/8 NONE A-678
242 RB75WPCC .012 4 .813 13/16 NONE A-678
245 RB77WPCC .007 4 .813 7/8 NONE A-678
249 RB77WPCC .007 4 .813 7/8 NONE A-678
503 REM84P .015 8 .500 7/8 SHIELDED A-678
504 N21 .025 4 .750 13/16 NONE A-678
505 ED89D .025 8 .500 7/8 SHIELDED A-678
506 D6 .027 6 .500 7/8 NONE A-678
509 D9 .025 6 .500 7 / 8 BN-9A N-678
514 D14 .025 6 .500 7 / 8 BN-9A N-678
515 D15Y .027 6 .500 7/8 NONE A-678
516 D16 .025 6 .500 7/8 ZN-9A A-678
519 RM77N .015 8 .531 7/8 BN-9A A-678
521 XMD21 .025 8 .531 7/8 SHIELDED A-678
523 D23 .030 8 .500 7/8 NONE A-678
526 RD15Y .027 6 .500 7/8 NONE A-678
529 D14N .015 8 .531 7 / 8 BN-9A A-678
541 RD16 .027 6 .500 7/8 NONE A-678
542 B86N .012 8 .813 7/8 BN-9A A-678
543 D89D .025 8 .500 7/8 NA-9E A-678
547 RTM77N .019 8 .531 1 BN-9A A-678
548 RTM79 .025 8 .531 7/8 BN-9A A-678
549 D18Y .027 6 .500 7/8 NONE A-678
550 ED14 .025 8 .531 7/8 SHIELDED A-678
555 UD16 .025 6 .500 7/8 ZN-9A A-678
563 XED16 .025 8 .531 7/8 SHIELDED A-678
564 D16J .030 6 .500 7/8 NONE A-678
566 M82N .015 8 .531 7/8 BN-9A A-678
568 REM77N .015 8 .531 7/8 SHIELDED A-678
27
INDUSTRIAL SPARK PLUG GAPS
PLUG
TYPE
AVAIL.
GAP
PACK
QTY.
REACH
INCHES
HEX
INCHES
TERMINAL
THREAD
NUT
REPL.
GASKET
STK.
NO.
PLUG
TYPE
AVAIL.
GAP
PACK
QTY.
REACH
INCHES
HEX
INCHES
TERMINAL
THREAD
NUT
REPL.
GASKET
STK.
NO.
18mm THREAD DIAMETER
571 RM79F .015 8 .500 7/8 BN-9A A-678
572 XED14 .025 8 .531 7/8 SHIELDED A-678
576 RB76N .012 8 .802 7/8 BN-9A A-678
583 RHM83N .015 8 .531 7/8 SHIELDED A-678
585 RHM85G .015 1 .500 7/8 SHIELDED A-678
586 RGM86N .013 1 .500 7/8 NONE A-678
591 RM85G .013 8 .500 7/8 BN-9A A-678
593 RD18Y .035 6 .500 7/8 NONE A-678
596 RHM77N .015 8 .531 7/8 SHIELDED A-678
597 K97F .020 8 .688 1 ZN-9A A-678
624 RHB81N .012 8 .813 7/8 SHIELDED A-678
625 D78Y .015 8 .500 7/8 ZN-9A A-678
630 M82N .012 8 .531 7/8 BN-9A A-678
634 RB77WPCC .012 4 .813 7/8 NONE A-678
636 RB77WPC .012 4 .813 7/8 NONE A-678
639 RHM83N .025 8 .531 7/8 SHIELDED A-678
640 RM77N .012 8 .531 7/8 BN-9A A-678
641 RM77N .020 8 .531 7/8 BN-9A A-678
643 RB75N .012 4 .802 7/8 NONE A-678
646 RTB80N .012 8 .813 7/8 BN-9A A-678
647 M76R .016 8 .500 7/8 ZN-9A M-674
649 XMD15 .025 8 .531 7/8 SHIELDED A-678
91 H14Y .035 4 .438 13/16 NONE A-678
7 / 8" - 18 THREAD DIAMETER
1204 RHW80PP .012 8 .625 1 SHIELDED A-478
1207 RW80PP .012 8 .625 15/16 BN-9A A-478
200 RW80N .015 4 .625 1 BN-9A A-478
201 W77N .012 8 1.000 15/16 BN-9A A-478
202 W80N .020 8 .600 15/16 BN-9A A-478
203 W85N .020 8 .600 15/16 BN-9A A-478
206 RW77N .015 4 1.000 1 BN-9A A-478
228 RW77PP .012 4 1.000 15/16 BN-9A A-478
510 W10 .025 8 .625 15/16 BN-9A A-478
513 C97B .025 8 1.250 11/8 A-146 A-478
518 W18 .025 8 .750 15/16 NA-9E A-478
520 W20 .025 8 .625 15/16 BN-9A A-478
532 RHW80N .013 4 .625 1 SHIELDED A-478
534 REW80N .012 8 .600 15/16 SHIELDED A-478
539 W77N .015 8 1.000 15/16 BN-9A A-478
544 HW83F .012 1 .625 1 SHIELDED A-478
545 W85N .013 8 .600 15/16 BN-9A A-478
552 RGC77N .012 1 1.000 1 NONE A-478
553 RW80N .012 4 .625 1 BN-9A A-478
559 RW83F .012 8 .625 1 BN-9A A-478
561 W16Y .025 8 .625 15/16 BN-9A A-478
562 W95D .040 8 .625 15/16 A-146 A-478
565 RW77N .012 4 1.000 1 BN-9A A-478
569 W14 .030 8 .625 15/16 BN-9A A-478
577 RHW77N .015 4 1.000 1 SHIELDED A-478
578 REW82P .012 8 .625 1 SHIELDED A-478
579 RHW79N .012 4 .625 1 SHIELDED A-478
7 / 8" - 18 THREAD DIAMETER
580 W80N .013 8 .600 15/16 BN-9A A-478
582 RW82P .012 8 .625 15/16 BN-9A A-478
589 W89D .025 8 .625 15/16 NA-9E A-478
595 C95F .020 8 .625 11/8 NA-9E A-478
623 RGC80F .013 1 .625 11/8 NONE A-478
631 RW78N .012 4 .860 15/16 BN-9A A-478
635 RHW78N .012 4 .860 1 SHIELDED A-478
638 RTW80N .012 1 .625 1 BN-9A A-478
645 RTW83F .012 1 .625 1 BN-9A A-478
28
Heat
Range
Thread
Reach
(inches)
Hex Size
(inches) Copper Plus Precious Metal
Precious Metal
Long Life
13/16"
External
Thread
13/16" External
Thread Precious
Metal
1"
Internal
Threads 5/8" - 24 3/4" - 20
3/4"- 20
Precious Metal
14mm THREAD DIAMETER
4 3/8" 13/16" TJ83
3 1/2" 5/8" RX85PYP
6 1/2" 13/16" REL89G*
4 1/2" 13/16" RL15B RL85G REL88B*
4 1/2" 13/16" RTL85G
3 1/2" 7/8" RHL79G*
3 3/4" 5/8" RC78PYP
2 3/4" 5/8" RC78YCC15
RC78PYP15
RC78PYP17
RC78PYP21
RC78PYP25
RC78WP
RC78WYP11
RC78WYP15
2 3/4" 13/16"
RN79G
RN79G1
RN79PYP17
RN79PYP25 RHN79G*
2 3/4" 15/16"
RTN79G
RTN79WYP15
18mm THREAD DIAMETER
7 1/2" 7/8" D89D ED89D*
6 1/2" 7/8" D14N
5 1/2" 7/8" RM85G RHM85G*
5 1/2" 7/8" D78Y
4 1/2" 7/8" M82N RM82WPCC RTM82WPCC REM84P* RHM83N*
3 1/2" 7/8" RM79F RTM79
3 1/2" 7/8" RM77N RM77PP
RTM77N
RTM78N
RTM77PP RGM86N REM77N*
RHM77N*
RHM78N•
RHM78WPCC•
RHM78PP•
7 0.691" 1" K97F
1 13/16" 13/16" RB75WPCC
5 13/16" 7/8" B86N
1 13/16" 7/8"
RTB78N
RTB80N RHB81N*
1 13/16" 7/8"
RB77CC
RB77N
KB75N
RB75N RB75PP
FB77WPCC
KB77WPCC
RB77WPCC
RB77WPC RTB77WPCC
1 13/16" 7/8" RB76N RB76PP
7/8" - 18mm THREAD DIAMETER
7 5/8" 15/16"
W95D
W89D
7 5/8" 15/16" W20
6 5/8" 15/16"
W16Y
W14
W10
5 5/8" 15/16" W85N RW82P
3 5/8" 15/16"
W80N
RW80N RW80PP
4 5/8" 1" REW82P*
3 5/8" 1" RW83F
RTW83F
RTW80N
REW80N*
RHW80N•
RHW79N*
HW83F• RHW80PP•
7 5/8" 1 1/8" C95F
3 5/8" 1 1/8"
3 5/8" 1 1/8" RGC80F
7 3/4" 15/16" W18
3 .860" 1" RW78N RHW78N•
31"1"
W77N
RW77N
RW77PP RHW77N•
3 1" 1 1/8" RGC77N
7 1 1/4" 1 1/8" C97B
1 1/8" - 12mm THREAD DIAMETER
3 0.595 1 RS79N
* 1" shielded spark plug depth.
• 2" shielded spark plug depth
STANDARD INTERGRAL COIL SHIELDED
HEAT RANGE (IMEP
)
IMEP established per SAE J54
9
1234567
400+ 350-400 300-350 250-300 200-250 150-200 100-150
COLD HOT
29
HEAT RANGE CHART
REPLACEMENTS FOR DISCONTINUED SPARK PLUGS
This list contains industrial spark plugs that have been discontinued. See the Champion Master Application Catalog. Refer to the
Champion policy on Unsalable Product or consult your supplier or Champion Representative on the handling of these plug types.
Discont'd
Plug
Replaced
By Plug
Discont'd
Plug
Replaced
By Plug
Discont'd
Plug
Replaced
By Plug
Discont'd
Plug
Replaced
By Plug
Discont'd
Plug
Replaced
By Plug
0-COM
510 / W10
C0
569 / W14
1
569 / W14
1-COM
569 / W14
C1
518 / W18
ORD-1
588 / XMJ14
TAC-1
610 / REL88B
10
541 / RD16
10-COM
523 / D23
10-COM-64
523 / D23
C10S
557 / XEJ8
D10
509 / D9
EH10
610 / REL88B
H10
854 / RH10C
J10-COM
102 / RJ6C
J10-COM-J
102 / RJ6C
J10Y
14 / RJ12YC
RF10
129 / RF10C
RH10
854 / RH10C
RN10Y
322 / RN11YC4
UK10
509 / D9
XEH10
610 / REL88B
RWP102
582 / RW82P
0N11Y
322 / RN11YC4
11
541 / RD16
EH11
610 / REL88B
EJ11
567 / XEJ12
F11Y
22 / RF11YC
F11YC
22 / RF11YC
H11
854 / RH10C
H11J
854 / RH10C
J11
511 / J11C
J11J
511 / J11C
J11Y
14 / RJ12YC
K11
509 / D9
N11Y
322 / RN11YC4
RBL11Y6
79 / RV15YC6
RF11Y
22 / RF11YC
RJ11Y
14 / RJ12YC
RN11Y
322 / RN11YC4
RN11YC
322 / RN11YC4
XEH11
610 / REL88B
XEJ11
567 / XEJ12
XH11
854 / RH10C
UK112
506 / D6
EJ12
567 / XEJ12
J12
592 / RJ12C
J12Y
14 / RJ12YC
K12G
514 / D14
KJ12
592 / RJ12C
N12Y
404 / RN12YC
RF12
129 / RF10C
RF12-5
129 / RF10C
RJ12Y
14 / RJ12YC
RJ12Y6
66 / RJ18YC6
RJ12YC6
66 / RJ18YC6
RN12Y
404 / RN12YC
XH12
854 / RH10C
13
541 / RD16
A13
525 / 25
J13
525 / 25
J13-0
525 / 25
J13Y
63 / RJ14YC
K13
514 / D14
N13L
101 / RN13LYC
N13Y
405 / RN14YC
RN13L
101 / RN13LYC
14
541 / RD16
A14
525 / 25
A14-0
525 / 25
C14
525 / 25
EJ14
567 / XEJ12
F14Y
21 / RF14YC
FN14LY
412 / RC12LYC
H014S
NR
J14
592 / RJ12C
J14-64CL
599 / J99
J14C1
599 / J99
J14J
846 / CJ14
J14Y
63 / RJ14YC
J14YC
63 / RJ14YC
MJ14
588 / XMJ14
N14LY
101 / RN13LYC
N14Y
405 / RN14YC
RD14M
514 / D14
RD14M
514 / D14
RF14Y
21 / RF14YC
RF14Y4
21 / RF14YC
RJ14Y
63 / RJ14YC
RN14Y
405 / RN14YC
UEJ14
567 / XEJ12
XD14
514 / D14
XEJ14
567 / XEJ12
15
541 / RD16
15A
541 / RD16
15-SPEC
541 / RD16
A15
525 / 25
C15
502 / D21
JI15
514 / D14
K15J
514 / D14
UD15Y
526 / RD15Y
XEC15
563 / XED16
16
541 / RD16
C16C
561 / W16Y
ED16
563 / XED16
H16
506 / D6
H16A
506 / D6
N16Y
405 / RN14YC
N16YC
405 / RN14YC
RD16J
541 / RD16
RD16M
541 / RD16
RN16Y
405 / RN14YC
UED16
563 / XED16
UK16V
506 / D6
XD16
541 / RD16
XD16J
541 / RD16
H17
509 / D9
H17A
509 / D9
18
514 / D14
H18Y
857 / RH18Y
J18Y
58 / RJ18YC
J18YC
58 / RJ18YC
RJ18Y
58 / RJ18YC
2
518 / W18
2-COM
518 / W18
2-COM-L
518 / W18
N2
818 / RN2C
RN2
818 / RN2C
RN2G
818 / RN2C
TAC-2
612 / RML12
UJ2J
825 / J4C
20
520 / W20
RJ20Y
58 / RJ18YC
21
510 / W10
XED21
563 / XED16
22
520 / W20
J23
525 / 25
A24
525 / 25
G24
525 / 25
A25
525 / 25
A26
541 / RD16
29
525 / 25
3
561 / W16Y
3-COM
518 / W18
N3
880 / RN3C
RN3
880 / RN3C
30
525 / 25
31
525 / 25
32
525 / 25
34
525 / 25
A34
525 / 25
35
520 / W20
35-COM
518 / W18
CH36001
547 / RTM77N
CH36002
548 / RTM79
CH36003
540 / RTN79G
CH36004
556 / RTL85G
CH36006
NR
CH36007
NR
CH36008
556 / RTL85G
CH36009
540 / RTN79G
CH36010
625 / D78Y
REB37E
NR
CH38016
NR
4
561 / W16Y
4-COM
506 / D6
C4X
561 / W16Y
J4
825 / J4C
J4J
825 / J4C
N4
104 / RN4C
QC4
561 / W16Y
RJ4
825 / J4C
RJ4J
825 / J4C
RN4
104 / RN4C
TAC-4
603 / XML12
X4-COM
506 / D6
40
597 / K97F
41
597 / K97F
42
597 / K97F
43
518 / W18
A43
569 / W14
B43
561 / W16Y
JA43
561 / W16Y
JAS43
561 / W16Y
JB43
518 / W18
JC43
561 / W16Y
G44
520 / W20
GH44
518 / W18
45
562 / W95D
46
562 / W95D
49
543 / D89D
E49
505 / ED89D
XE49
505 / ED89D
5
429 / 3X
5-COM
509 / D9
5M
509 / D9
5MJ
509 / D9
C5
569 / W14
J5J
102 / RJ6C
L5
874 / RL82C
L5J
874 / RL82C
N5
123 / RN5C
RN5
123 / RN5C
X5-COM
509 / D9
A53
518 / W18
AA53
518 / W18
B53
561 / W16Y
JA53
518 / W18
JC53
518 / W18
00-55-1
627 / F-6A-13
00-55-2
NR
00-55-3
NR
6
518 / W18
6-COM
514 / D14
6-COM-62
514 / D14
6-COM-D
514 / D14
6M
514 / D14
6MJ
506 / D6
DJ6
851 / DJ6J
DJ6Y
872 / RDJ7Y
EJ6
557 / XEJ8
EJ6J
557 / XEJ8
J6
102 / RJ6C
J6J
102 / RJ6C
J6JM
102 / RJ6C
N6
123 / RN5C
N6Y
339 / RN6YC
RD6
506 / D6
RJ6
102 / RJ6C
RJ6J
102 / RJ6C
RN6
123 / RN5C
RN6Y
339 / RN6YC
UJ6
102 / RJ6C
UJ6M
102 / RJ6C
X6-COM
514 / D14
XD6E6-COM
572 / XED14
XE6-COM
572 / XED14
XEJ6
557 / XEJ8
XEJ6J
557 / XEJ8
62S
572 / XED14
A64
541 / RD16
7
541 / RD16
7-COM
541 / RD16
C7
541 / RD16
E7
563 / XED16
J7
871 / RJ8C
J7J
871 / RJ8C
K7
506 / D6
K7
506 / D6
N7Y
332 / RN7YC
R7B
506 / D6
RN7Y
332 / RN7YC
XE7
563 / XED16
XEJ7
557 / XEJ8
XEL7A
610 / REL88B
XJ7
871 / RJ8C
72
510 / W10
73
510 / W10
RB75WPC
242 / RB75WPCC
D77V
506 / D6
HW77N
596 / RHM77N
RM78P
519 / RM77N
REN79G
NR
8
541 / RD16
8-COM
541 / RD16
8-COM-C
523 / D23
8-COM-D
523 / D23
8-COM-K
526 / RD15Y
8-SPEC
541 / RD16
D8
597 / K97F
DJ8
865 / RDJ8J
DL8
597 / K97F
DL8C
597 / K97F
E8-COM
563 / XED16
ED8
597 / K97F
EDL8
597 / K97F
EH08
610 / REL88B
EH8
610 / REL88B
EJ8
557 / XEJ8
EJ8J
557 / XEJ8
H08A
533 / UJ11G
J8
871 / RJ8C
J8J
871 / RJ8C
JT8
840 / RCJ8
K8
509 / D9
N8
123 / RN5C
RJ8
871 / RJ8C
RJ8J
871 / RJ8C
RN8
123 / RN5C
TJ8J
840 / RCJ8
UCJ8G
840 / RCJ8
UJ8
871 / RJ8C
X8-COM
541 / RD16
XE8-COM
563 / XED16
XEH8
557 / XEJ8
XEH8J
557 / XEJ8
XEJ8J
557 / XEJ8
XJ8
871 / RJ8C
XJ8J
871 / RJ8C
HW80N
532 / RHW80N
RF80N
129 / RF10C
RGC80N
NR
RGC80N
NR
RM80F
571 / RM79F
808
529 / D14N
NR - No Replacement
30
REPLACEMENTS FOR DISCONTINUED SPARK PLUGS
This list contains industrial spark plugs that have been discontinued. See the Champion Master Application Catalog. Refer to the
Champion policy on Unsalable Product or consult your supplier or Champion Representative on the handling of these plug types.
Discont'd
Plug
Replaced
By Plug
Discont'd
Plug
Replaced
By Plug
Discont'd
Plug
Replaced
By Plug
Discont'd
Plug
Replaced
By Plug
Discont'd
Plug
Replaced
By Plug
EC85N
534 / REW80N
RL85P
1224 / RL85G
TN85Y
540 / RTN79G
RL86
830 / RL86C
C87S
610 / REL88B
L87Y
327 / RL87YC
RJ87P
14 / RJ12YC
RL87Y
327 / RL87YC
C88
610 / REL88B
C88S
610 / REL88B
ED88F
505 / ED89D
H88
538 / RH8C
K88S
610 / REL88B
L88
830 / RL86C
RC88S
610 / REL88B
UED88G
572 / XED14
RHL89G
NR
UED89D
505 / ED89D
XED89D
505 / ED89D
XED89DXI
505 / ED89D
9
502 / D21
9-COM
523 / D23
D9J
509 / D9
D9JM
509 / D9
ED9
550 / ED14
EH9
610 / REL88B
F9Y
409 / RF9YC
F9YC
409 / RF9YC
H9
538 / RH8C
H9-COM
538 / RH8C
H9J
538 / RH8C
K9
509 / D9
N9Y
415 / RN9YC
RD9
509 / D9
RF9Y
409 / RF9YC
RF9Y5
409 / RF9YC
RN9Y
415 / RN9YC
XD9
509 / D9
XE9
572 / XED14
XED9-COM
572 / XED14
XEH9
610 / REL88B
XH9
538 / RH8C
EW90
NR
E901
534 / REW80N
ED91
505 / ED89D
HC95F
544 / HW83F
K98F
597 / K97F
NR - No Replacement
31
CAUTION. DO NOT USE THIS CHART
UNLESS YOU ARE UNABLE TO FIND YOUR VEHICLE OR EQUIPMENT LISTED IN THE APPLICATION SECTIONS OF THIS CATALOG.
CROSS REFERENCE CHART
A/C Delco
Champion
A/C Delco To Champion
A/C Delco
Champion
A/C Delco
Champion
A/C Delco
Champion
A/C Delco
Champion
373
D9 / 509
WR43LR
RML12 / 612
C77L
W18 / 518
C77
W16Y / 561
C75
W14 / 569
C73
W10 / 510
800LY
B86N / 542
78S
W20 / 520
701Y
W85N / 545
700YX
W80N / 580
700Y
W80N / 580
43LS
H14Y / 91
18A
D89D / 543
C83
D9 / 509
404
RL85G / 1224
C85S
RD15Y / 526
373
D6 / 506
26
25 / 525
18
W89D / 589
17
W95D / 562
16
K97F / 597
14
K97F / 597
WR87
XMD21 / 521
WR86
XMD21 / 521
WR84
XMD15 / 649
WR47
XMJ14 / 588
WR46
XMJ17 / 517
WR44LS
XML15Y / 633
WR44
XMJ14 / 588
16L
K97F / 597
S82F
D9 / 509
WR43L
XML12 / 603
WR43
XMJ14 / 588
SR86E
XED16 / 563
SR84E
XED14 / 572
SR47XL
XEN14 / 614
SR47LE
REL88B / 610
SR47E
XEJ12 / 567
SR46E
XEJ12 / 567
SR45LE
REL88B / 610
SR44E
XEJ8 / 557
SR43LE
REL88B / 610
SR43E
XEJ8 / 557
C81
D14N / 529
S83F
D9 / 509
C82
D9 / 509
R800
RM77N / 519
G59
25 / 525
G56
25 / 525
G54
C95F / 595
G53
C95F / 595
CR83
D9 / 509
CR82
D9 / 509
C88L
D23 / 523
C88
D21 / 502
C87
D16 / 516
C86S
D18Y / 549
C86
D14N / 529
C86
D14 / 514
S85F
D14 / 514
C85
D14 / 514
Allis-Chalmers
Champion
Allis-Chalmers To Champion
Allis-Chalmers
Champion
Allis-Chalmers
Champion
Allis-Chalmers
Champion
Allis-Chalmers
Champion
74905796
N5C / 120
79001652
J6C / 823
79001651
N5C / 120
74905800
D16 / 516
74905798
N5C / 120
4907335
J8C / 841
4905800
D16 / 516
4905797
N5C / 120
Autolite
Champion
Autolite To Champion
Autolite
Champion
Autolite
Champion
Autolite
Champion
Autolite
Champion
2222
XED14 / 572
373
D9 / 509
2247
XMJ20 / 573
2246
XEJ12 / 567
2245
XMJ17 / 517
2244
XEJ8 / 557
2243
XMJ14 / 588
2242
XEJ8 / 557
2227
XMD21 / 521
2226
XMD21 / 521
2225
XED16 / 563
2285
REL88B / 610
2223
XMD15 / 649
2304
XMN12 / 616
436
H14Y / 91
398
N21 / 504
388
D21 / 502
386
RD16 / 541
379
D89D / 543
378
D23 / 523
377
D21 / 502
376
D16 / 516
375
D14 / 514
374
D9 / 509
2224
XMD21 / 521
2696
D9 / 509
3116
D18Y / 549
3095
25 / 525
3077
W89D / 589
3076
W14 / 569
3075
W14 / 569
3074
W10 / 510
3035
UD16 / 555
2832
D6 / 506
2775
D16 / 516
2773
D9 / 509
2248
XEJ12 / 567
2697
D14 / 514
372
D6 / 506
2695
D6 / 506
2693
D6 / 506
2384
XML12 / 603
2384
XML15Y / 633
2344
RML12 / 612
2327
REL88B / 610
2326
REL88B / 610
2325
REL88B / 610
2307
XEN14 / 614
2305
XMN12 / 616
2772
D9 / 509
BERU
Champion
BERU To Champion
BERU
Champion
BERU
Champion
BERU
Champion
BERU
Champion
18GZ7
RB76N / 576
143CPU
RN79G / 530
14R4ADP
RL85G / 1224
14R4CDP
RN79G / 530
14R4DP
RL85G / 1224
18GZ577
RB75WPCC / 242
18GZ677
RB77WPC / 636
BG
Champion
BG To Champion
BG
Champion
BG
Champion
BG
Champion
BG
Champion
RB485S
RHM85G / 585
RB485SA
RHM85G / 585
RB590
RL85G / 1224
RB590S
REL89G / 522
RB792S
RHL79G / 551
RB842S
RHW80N / 532
RB485S
REM84P / 503
RB959SA
RHM77N / 596
RB212
RW82P / 582
RB959S
RHM77N / 596
RB485
RM85G / 591
RB442SAW
RHM83N / 583
RB993R
RN79G / 530
RB312S
REW82P / 578
RB442SW
RHM83N / 583
RB126SD
RHW77N / 577
RB1141
RW77N / 565
RB106
RS79N / 598
BG883T
RF10C / 129
RB312S
ED89D / 505
RB412
RW82P / 582
Bosch
Champion
Bosch To Champion
Bosch
Champion
Bosch
Champion
Bosch
Champion
Bosch
Champion
M4A2
D6 / 506
M8AC0
D9 / 509
M8A0
D9 / 509
M8A
D9 / 509
M7AC
D6 / 506
M7A
D6 / 506
M5AS
D6 / 506
M5AC
D6 / 506
W10C
N21 / 504
M4AC
D6 / 506
M10A0
D14 / 514
M4A1
D6 / 506
M12A
D16 / 516
M10AC0
D14 / 514
M10A
D14 / 514
60999S
RB77WPCC / 634
7311
RN79G / 642
M5A
D6 / 506
7306
KB77WPCC / 229
WR3CPP33
RN79G / 642
MR3DPP330
FB77WPCC / 1230
MR3DPP330
KB77WPCC / 229
MR3BPP330
RM77PP / 217
MR3DPP33
RB75PP / 225
FR3KII332
RC78WYP15 / 1221
7307
RB75WPCC / 242
WR7CE+
RN5C / 123
7306
RB77WPCC / 634
7303
RM77PP / 217
7302
RB75PP / 225
60999Z
RB77CC / 237
Case
Champion
Case To Champion
Case
Champion
Case
Champion
Case
Champion
Case
Champion
AO5999AB
J8C / 841
O5999B
J8C / 841
TG44840
D16 / 516
TM20007
H10C / 844
TM20699
L86C / 306
Caterpillar
Champion
Caterpillar To Champion
Caterpillar
Champion
Caterpillar
Champion
Caterpillar
Champion
Caterpillar
Champion
9B0444
J6C / 823
3B6583
H10C / 844
2A3643
D16 / 516
2B9548
W14 / 569
2W9486
N9YC / 300
1948518
KB77WPCC / 229
8F6347
CJ8 / 843
2848313
KB77WPCC / 229
9M4141
J12YC / 10
23643
D16 / 516
9M4142
J12YC / 10
For A Complete Cross Reference List Refer To The Champion Master Application Catalog No.1015 or go to www.Fme-Cat.com
32
CAUTION. DO NOT USE THIS CHART
UNLESS YOU ARE UNABLE TO FIND YOUR VEHICLE OR EQUIPMENT LISTED IN THE APPLICATION SECTIONS OF THIS CATALOG.
CROSS REFERENCE CHART
Champion Plug
Type
Champion
Champion Plug Type To Champion
Champion Plug
Type
Champion
Champion Plug
Type
Champion
Champion Plug
Type
Champion
Champion Plug
Type
Champion
RB77WPCC (Gap .007)
1205
RTM77PP (Gap .012)
223
RTM77N (Gap .019)
547
RTM77N (Gap .012)
214
W20 (Gap .025)
520
RM77N (Gap .020)
641
D14N (Gap .015)
529
RM77N (Gap .015)
519
RHM77N (Gap .020)
213
RB77WPCC (Gap .012)
634
REM77N (Gap .015)
568
M76R (Gap .016)
647
RHM83N (Gap .015)
583
D78Y (Gap .015)
625
RB77WPC (Gap .012)
636
RB77CC (Gap .012)
237
RTB77WPCC (Gap .012)
235
KB77WPCC (Gap .012)
229
RB76PP (Gap .012)
226
RB76N (Gap .012)
576
RHM77N (Gap .015)
596
RHB81N (Gap .012)
624
RM77N (Gap .012)
640
RB75WPCC (Gap .012)
242
B86N (Gap .012)
542
RM85G (Gap .013)
591
RHM85G (Gap .015)
585
REM84P (Gap .015)
503
RHM83N (Gap .025)
639
RM82WPCC (Gap .012)
233
M82N (Gap .015)
566
RTM82WPCC (Gap .012)
1225
RHM78N (Gap .015)
234
RTN79WYP (Gap .015)
1232
RTB80N (Gap .012)
646
RTM79 (Gap .025)
548
RM79F (Gap .015)
571
RTM78N (Gap .019)
1202
RTM78N (Gap .012)
1201
RTB78N (Gap .012)
1203
RHM78WPCC (Gap .012)
236
RHM78PP (Gap .012)
222
M82N (Gap .012)
630
RW78N (Gap .012)
631
W80N (Gap .013)
580
XMJ20 (Gap .025)
573
XMJ14 (Gap .025)
588
XEJ12 (Gap .025)
567
XEJ8 (Gap .025)
557
RHW77N (Gap .015)
577
RM77PP (Gap .015)
217
RW77N (Gap .015)
206
RB75PP (Gap .012)
225
RW77PP (Gap .012)
228
W77N (Gap .012)
201
RJ88P (Gap .015)
644
RHW78N (Gap .012)
635
RML12 (Gap .025)
612
D89D (Gap .025)
543
ED89D (Gap .025)
505
K97F (Gap .020)
597
RHW79N (Gap .012)
579
REW80N (Gap .012)
534
RGC80F (Gap .013)
623
RHW80N (Gap .013)
532
RHW80PP (Gap .012)
1204
RTW80N (Gap .012)
638
RW80N (Gap .012)
553
RW80N (Gap .015)
200
RW80PP (Gap .012)
1207
W77N (Gap .015)
539
RC78PYP17 (Gap .017)
232
D14 (Gap .025)
514
D9 (Gap .025)
509
RTN79G (Gap .015)
540
RN79PYP17 (Gap .017)
247
RN79G (Gap .025)
642
RN79G (Gap .015)
530
XEN14 (Gap .025)
614
XMN12 (Gap .025)
616
RHN79G (Gap .015)
575
RC78WP (Gap .012)
1206
RC78YCC15 (Gap .015)
1209
TJ83 (Gap .025)
594
RC78PYP21 (Gap .021)
244
RW77N (Gap .012)
565
RC78PYP15 (Gap .015)
243
RC78PYP (Gap .021)
219
RC78PYP (Gap .017)
1208
RC78PYP (Gap .015)
218
RX85PYP (Gap .012)
230
REL89G (Gap .015)
522
REL88B (Gap .020)
610
RTL85G (Gap .015)
556
RHL79G (Gap .015)
551
XML15Y (Gap .025)
633
RL15B (Gap .015)
535
XML12 (Gap .025)
603
RC78PYP25 (Gap .025)
241
N21 (Gap .025)
504
W18 (Gap .025)
518
W16Y (Gap .025)
561
W14 (Gap .030)
569
W10 (Gap .025)
510
RGC77N (Gap .012)
552
D16J (Gap .030)
564
D18Y (Gap .027)
549
RD16 (Gap .027)
541
RD15Y (Gap .027)
526
25 (Gap .030)
525
D23 (Gap .030)
523
D14N (Gap .025)
204
D6 (Gap .027)
506
Y82 (Gap .020)
877
D21 (Gap .027)
502
H14Y (Gap .035)
91
W80N (Gap .020)
202
J99
599
RTV85G (Gap .025)
1220
RD18Y (Gap .035)
593
XMD21 (Gap .025)
521
XMJ17 (Gap .025)
517
RN79PYP25 (Gap .025)
248
RN79G1 (Gap .010)
224
RL85G (Gap .015)
1224
D15Y (Gap .027)
515
RS79N (Gap .012)
598
REW82P (Gap .012)
578
RW82P (Gap .012)
582
HW83F (Gap .012)
544
RTW83F (Gap .012)
645
RW83F (Gap .012)
559
W85N (Gap .013)
545
W85N (Gap .020)
203
W89D (Gap .025)
589
C95F (Gap .020)
595
W95D (Gap .040)
562
RB75N (Gap .012)
643
RGM86N (Gap .013)
586
FB77WPCC (Gap .012)
1230
XED16 (Gap .025)
563
ED14 (Gap .025)
550
XED14 (Gap .025)
572
XMD15 (Gap .025)
649
C97B (Gap .025)
513
UD16 (Gap .025)
555
RC78WYP15 (Gap .015)
1221
RC78WYP11 (Gap .011)
1218
RC78PYP (Gap .012)
1213
RB77WPCC (Gap .007)
1205
RB77WPCC (Gap .007)
1205
KB75N (Gap .012)
1219
D16 (Gap .025)
516
DENSO
Champion
DENSO To Champion
DENSO
Champion
DENSO
Champion
DENSO
Champion
DENSO
Champion
MW22U
D9 / 509
GI31A
KB77WPCC / 229
GE31
RN79G / 642
M22
D9 / 509
M24S
D6 / 506
U20MU
Y82 / 877
GI33A
KB77WPCC / 229
MW17U
D14 / 514
W9EU
N21 / 504
M17
D14 / 514
M14
D16 / 516
L14U
D16 / 516
L14RU
RD16 / 541
GL33A
RB75WPCC / 242
GL31A
RB75WPCC / 242
Massey-Ferguson
Champion
Massey-Ferguson To Champion
Massey-Ferguson
Champion
Massey-Ferguson
Champion
Massey-Ferguson
Champion
Massey-Ferguson
Champion
834241MI
D16 / 516
834241MI
D16 / 516
834241MI
RF11YC / 22
834237MI
RF11YC / 22
834241MI
RF11YC / 22
834245MI
N5C / 120
834245MI
N5C / 120
834237MI
RF11YC / 22
834247MI
L86C / 306
834230MI
J8C / 841
834248MI
RF10C / 129
834247MI
L86C / 306
834236MI
N12YC / 38
834236MI
N12YC / 38
834234MI
L86C / 306
834234MI
L86C / 306
834232MI
J11C / 511
834230MI
J8C / 841
834225MI
J8C / 841
834225MI
J8C / 841
1060024MI
RV12YC / 406
1060024MI
RV12YC / 406
834248MI
RF10C / 129
834232MI
J11C / 511
Motorcraft
Champion
Motorcraft To Champion
Motorcraft
Champion
Motorcraft
Champion
Motorcraft
Champion
Motorcraft
Champion
BT3
D9 / 509
BT2
D6 / 506
B4X
D9 / 509
B6W
D14 / 514
B82
D15Y / 515
B8X
D16 / 516
BR4S
XED14 / 572
BR5S
XMD15 / 649
BR7S
XMD21 / 521
BR8
RD16 / 541
BR8S
XED16 / 563
BR9S
XMD21 / 521
BS5S
XMD15 / 649
B3X
D9 / 509
BT10
D21 / 502
TT10
W14 / 569
BT4
D9 / 509
BT6
D14 / 514
BT8
D16 / 516
BT9
D21 / 502
BTS8
D16 / 516
BZ8
UD16 / 555
F11
25 / 525
TT15
W89D / 589
TT8
W14 / 569
A6S
XEJ8 / 557
BT15
D89D / 543
BS9S
XMD21 / 521
AGR8S
XEN14 / 614
TT4
W10 / 510
AER3S
RML12 / 612
AER4S
REL88B / 610
A8S
XEJ12 / 567
AER72S
XML15Y / 633
AG9
N21 / 504
B3W
D9 / 509
AGR4S
XEN14 / 614
AER3SA
XML12 / 603
AL52
H14Y / 91
AR10S
XEJ12 / 567
AR4S
XEJ8 / 557
AR5S
XMJ14 / 588
AS6S
XEJ8 / 557
B2W
D6 / 506
AGR3S
XMN12 / 616
AR6S
XEJ8 / 557
AS7S
XMJ17 / 517
AVR3S
RML12 / 612
AS5S
XMJ14 / 588
ARL8S
REL88B / 610
ARL6S
REL88B / 610
ARL4S
REL88B / 610
AR9S
XMJ20 / 573
AR8S
XEJ12 / 567
AR7S
XMJ17 / 517
AS8S
XEJ12 / 567
For A Complete Cross Reference List Refer To The Champion Master Application Catalog No.1015 or go to www.Fme-Cat.com
33
CAUTION. DO NOT USE THIS CHART
UNLESS YOU ARE UNABLE TO FIND YOUR VEHICLE OR EQUIPMENT LISTED IN THE APPLICATION SECTIONS OF THIS CATALOG.
CROSS REFERENCE CHART
STITT
Champion
STITT To Champion
STITT
Champion
STITT
Champion
STITT
Champion
STITT
Champion
R817L
RB75N / 643
R717
RW78N / 631
R807
RM77N / 519
R80L
RB75N / 643
R817L
RB76N / 576
R847
RD15Y / 526
R847
RD16 / 541
RE72
RW83F / 559
S2SGA105
REW82P / 578
RF407L
RV12YC / 406
R717
RW77N / 565
R45
RJ88P / 644
R40L
RL15B / 535
R407XLC
RC78PYP / 218
R407L
RL15B / 535
R2SGA40L
RL85G / 1224
R107
RW80N / 553
E84
RM79F / 571
CPR887
RGM86N / 586
S2SGA40L
RHL79G / 551
CPM807
RTM77N / 547
S8MEX5
ED89D / 505
CPM80
RTM79 / 548
CPM80L
RTB80N / 646
SE722
HW83F / 544
897
D14N / 529
CPM2SGA40XL
RTN79G / 540
U827
RD16 / 541
SR827
RHM83N / 583
SR817L
RHB81N / 624
SR807
RHM77N / 596
SR7172
RHW78N / 635
SR7172
RHW77N / 577
SR1375
REW80N / 534
S8275
REM77N / 568
SR1072
RHW80N / 532
S2SGA40L5
REL88B / 610
S865
XED16 / 563
S825
XED14 / 572
S825
ED14 / 550
S47XL5MC
XEN14 / 614
S475MC
XEJ12 / 567
S40L5MC
REL89G / 522
S405MC
XEJ8 / 557
S2SGA805
REM84P / 503
S2SGA80
RHM85G / 585
S2SGA40XL
RHN79G / 575
SR137
RHW79N / 579
82
D18Y / 549
912
W89D / 589
847
M82N / 566
827
M82N / 566
727
W77N / 539
719
W18 / 518
197
W20 / 520
117
W80N / 580
107
W80N / 580
86
D23 / 523
137BSP
W16Y / 561
82
D78Y / 625
15E
25 / 525
82
D16J / 564
82
D16 / 516
82
D15Y / 515
82
D14 / 514
82
D9 / 509
82
D6 / 506
79
W18 / 518
19
C97B / 513
13
W10 / 510
10
W10 / 510
86
D21 / 502
2SGA10
RW82P / 582
CPM10
RTW80N / 638
CPE72
RGC80F / 623
CP717
RGC77N / 552
8MEX
D89D / 543
8MEX
K97F / 597
8ME
D89D / 543
8ME
K97F / 597
817L
B86N / 542
407XL
RC9YC4 / 430
407L
RJ6C / 102
137BSP
W85N / 545
2SGA40XL
RN79G / 530
147B
W14 / 569
17EX
C97B / 513
17EX
C95F / 595
17EX
W95D / 562
17EX
W89D / 589
17E
C95F / 595
17E
W95D / 562
17E
W89D / 589
17E
C97B / 513
15EX
25 / 525
CPM2SGA40L
RTL85G / 556
2SGA80
RM85G / 591
For A Complete Cross Reference List Refer To The Champion Master Application Catalog No.1015 or go to www.Fme-Cat.com
Military Shielded Resistor Type
s
Heat Range
Thread
Size
Thread
Reach Champion
Ordnance
Number AC
A
utolite
(old)
Autolite
(new) Blue Crown
18 mm 1/2" 563 / XED16 --- --- BR10S 2225 SR8E13B
563 / XED16 MS35911-1 SR86E BR8S 2225 SR8E15B
572 / XED14 MS35911-2 SR84E BR4S 2222 SR8E20
18 mm 1/2" 521 / XMD21* MS51009-1 WR87 BR9S 2226 SR8E13
521 / XMD21* MS51009-2 WR86 BR7S 2224 SR8E13
649 / XMD15* MS51009-3 WR84 BR5S 2223 SR8E20B
14 mm 3/8" 567 / XEJ12 MS35908-1 SR47E AR8S, AR10S 2246 SR6F14
557 / XEJ8 --- SR46E AR6S 2244 SR6F17
557 / XEJ8 MS35908-2 SR44E AR4S 2242 SR6F20C
557 / XEJ8 7359620 SR43E 2242 ---
14 mm 7/16" XEH8** 557 / XEJ8 MS35909-3 SR47LE ARL8S 2325 ---
XEH8** 557 / XEJ8 8331648 SR45LE ARL6S 2325 SR7F14
XEH8** 557 / XEJ8 --- SR43LE ARL4S 2325 SR7F17
14 mm 3/8" 573 / XMJ20* MS35909-3 WR47 AR9S 2247 SR6F13
517 / XMJ17* MS35909-2 WR46 AR7S 2245 SR6F15
588 / XMJ14* MS35909-1 WR44, WR43 AR5S 2243 SR6F20
14 mm 1/2" 610 / REL88B --- WR42 AER4S 2344 ---
633 / XML15Y* MS35909-6 AER72S 2384 ---
603 / XML12* MS35909-4 WR44LS AER3SA 2384 SR8F23B
612 / RML12* 8668752 WR43L AER3SA 2344 ---
14 mm 3/4" 614 / XEN14 --- WR43LR AGR8S --- ---
614 / XEN14 --- SR47XL AGR4S --- ---
616 / XMN12* 10863369 --- AGR3S 2304 ---
* Requires special underwater connector. ** Discontinued plug, may use 557 / XEJ8 as a replacement
HOT
HOT
HOT
HOT
HOT
HOT
HOT
COLD
COLD
COLD
COLD
COLD
COLD
COLD
34
Spark Plug Installation
SHELL TO
INSULATOR SEAL
WHEN STRETCHED
POOR
HEAT TRANSFER
SHELL
DEFORMATION
(STRETCH)
UNLOADING OF
LOWER SEAT GASKET
AS DESIGNED
CORRECT
HEAT TRANSFER
OVER-TORQUE
CORRECT TORQUE
FIGURE 2
Torque Recommendations
N678 14mm 26-30 lb-ft 18-22 lb-ft
A678 18mm 32-38 lb-ft 28-34 lb-ft
A478 7/8" 50-55 lb-ft —
— 1-1/8" 140-150 lb-ft —
— 14mm 7-15 lb-ft 7-15 lb-ft
— 18mm 15-20 lb-ft 15-20 lb-ft
FIGURE 1
Gasket Type
SERVICE
GASKET
SPARK PLUG
THREAD SIZE
CAST IRON
HEADS
ALUMINUM
HEADS
TORQUE WRENCH
Tapered Seat
The recommended procedure is to remove the old spark
plug and install the new spark plug by hand until it contacts
the gasket seat. A new gasket should always be used. By
removing and installing the spark plug by hand, it will be easier
to detect any problems in the thread area such as binding or
looseness. Should problems be detected, refer to the NOTE
section for recommended course of action. Once all spark
plugs have been installed by hand, return to the rst spark
plug installed and tighten to correct torque. This will allow the
spark plug temperature to stabilize with the cylinder head
temperatures. (Figure 1)
This may lead to shell seal leakage and poor heat transfer out of
the spark plug, causing premature failure. The leakage can also
result in ejection of the insulator from the shell. (Figure 2)
NOTE. After the normal service life of a spark plug, one or
more of the spark plugs may be a little difcult to remove.
Penetrating oil may be used if the spark plug appears to be
dangerously tight. Apply steady pressure with a spark plug
wrench until the spark plug loosens. Once loosened, if the
spark plug is still turning hard, apply more penetrating oil, then
tighten and loosen the spark plug repeatedly until the spark
plug rotates easily. Before removing the spark plug, blow any
dirt from the port area that might be present to prevent it from
falling into the combustion chamber.
If the spark plug appeared to be overly tight when removed
by hand, it may be due to deposits collecting in the threaded
area of the cylinder head. The threads should be cleaned with
the proper size and length chaser tool, and the seat wiped
clean to assure good seat contact before installing the new
spark plug.
Recommended practice would be to clean spark plug port
threads and seating area every six months or every spark plug
change, whichever is longer.
If chasing the threads does not allow hand installation of the
spark plug, further investigation is necessary. At this point it
might be necessary to use a tap to verify correct thread size.
Before using a tap, it is critical to verify the correct size and
pitch. This tap should only be used if the thread chaser does
not permit installation of the spark plug by hand. Frequent use
can result in unnecessary metal removal, causing the spark plug
to be loose in the port. When using the thread chaser tool or
tap, a heavy grease should be applied to the utes to catch
debris removed from the thread area.
If looseness is obvious, necessary steps must be taken to
avoid serious problems. A loose tting spark plug could result in
torching of the thread area and/or pre-ignition if the heat transfer
from the spark plug to the cylinder head is insufcient to cool the
spark plug.
These torque values are for spark plugs installed in clean,
dry threads and should be followed unless otherwise specied
by the engine manufacturer. Excessive torque (over-torque)
can lead to thread body stretch.
If the threads are lubricated, the torque value should be
reduced 20%. Apply a very small amount only on the second
thread from the ring end of the spark plug. No lubricant must
be allowed on the ring end or anywhere on the upper area of
the plug.
Spark plug cleanliness is essential for maximum spark plug life.
All parts of the ignition system must be kept clean from dirt, oil,
grease and paint. Any and all of these contaminants on the
inside or outside of leads, boots and connections, or anywhere
on the spark plug can cause misre and/or shortened spark plug
life.
TECHNICAL INFORMATION
35
Corona vs. Flashover
Connector Well Flashover / Contamination
Under certain atmospheric conditions, a pale bluish glow
may be observed around a conductor carrying high voltage.
You may have noticed that while driving at night, high-tension
cross-country power lines may have an eerie blue glow about
them. You may also notice this glow on
spark plug insulators if the engine is
running in a darkened room. This glow
is called corona, and it will not affect
ignition output or engine performance.
Corona does not indicate a faulty
ignition system or spark plug.
Even if you never see corona it may
leave a telltale, non-conductive, yellow or brown stain around
the insulator near the top of the shell. This stain should not be
interpreted as leakage between the shell
and insulator. This stain is caused by the
corona discharge attracting airborne dirt to
the insulator surface. Corona is not to be
confused with ashover, a situation where
the voltage actually tracks down the outside
of the insulator, resulting in misre. Corona
is harmless and is characterized by a
hissing sound, much different than the
familiar “snap” caused by ashover.
Shielded spark plugs have a unique set of challenges. One
is contamination in the lead connector well. Contamination in
this area of the plug often leads to the creation of a conductive
path and eventually misre due to ashover as seen in the
quarter sectioned shielded spark plug photograph below.
Connector well contamination may be caused by material
falling into the well, faulty or loose connections, moisture or
contaminated leads. The lead connection and spark plug well
should be carefully inspected for contamination and condition
before assembly.
The terminal lead connector (stinger) must be free of
contamination internally and externally. The lead connectors
are typically ceramic and are designed to last until broken.
However, in some cases the inner bore of the stinger can
become contaminated. This condition is difcult to detect and
can result in a misre condition. The cause of the
contamination may be oil or dirt that becomes lodged
between the connector lead and inner bore of the stinger.
The result is the formation of a conductive path that causes
the spark to arc to ground internal to the stinger with little or
no evidence noticeable upon removing the ignition lead from
the spark plug well.
This condition is easily
detected once the
stinger is removed from
the ignition lead.
Inspection of the lead
and bore of the stinger
may reveal arc etching of the ceramic and a corresponding mark
on the ignition lead. If these marks are found the stinger/lead
assembly must be replaced.
On the other hand, ashover external to the stinger whether it
is from contamination, improper lead attachment or excessive
voltages due to a worn out spark plug is often more easily
identiable as can be seen on the stinger in the photograph
above. When arcing is found on the outside of the stinger, there
is a good chance that the spark plug well also has been etched
by the arc. If this is the case, both the stinger and the spark
plug need to be replaced.
As greater demands are applied at the spark gap, the required
voltage increases. This increased voltage will follow the path of
least resistance. Contamination in the spark plug well or stinger
assembly will contribute to the creation of alternate paths.
Often-times replacement of the spark plug will eliminate the
misre. In the case of a contaminated well it will solve the
problem. In the case of a contaminated stinger assembly a new
plug with a tight gap and sharp edges will reduce the voltage
requirement and provide a temporary solution. If plug life
appears to steadily decrease the stinger assembly should be
carefully inspected for contamination.
Flashover occurs because the high tension lead at the spark
plug terminal is not adequately sealed and the voltage
requirement at the spark plugs ring end is higher than the
voltage requirement to arc externally.
This external arcing is ashover. Typical
causes of ashover are poor or damaged
ignition boots, dirty
cap ends, high
moisture/humidity,
damaged spark plug
insulators or worn
ring end gaps.
Flashover is identied
on the spark plug ceramic by blackened
track marks where the spark has occurred
externally and tracked down the surface of
the insulator.
Champion provides cap end shapes to
suit the needs of the application.
Champion’s insulator, combined with good
plug boots, will prevent harmful ashover.
Corona, however, can occur under any
condition where high voltage is present.
TECHNICAL INFORMATION
Corona
Flashover
Cap end ashover
track marks
Corona stain
Contamination in shielded spark plug well
Dielectrically failed lead connector/stinger
36
The Spark Plug’s Relation to the Ignition System
Factors Affecting Voltage Requirements (Vr)
The ignition system must be capable of supplying the
voltage necessary to initiate a spark between the spark plug
electrodes. In practice this means there must be considerable
“ignition reserve” to compensate for normal wear of the spark
plugs and components of the ignition system.
Ignition reserve is the difference between voltage available
(Va) from the ignition system, and voltage required (Vr) by the
spark plug. If at any time Vr equals Va, misre will likely occur.
(Figure 3)
COMPRESSION PRESSURE
Depending on the type of fuel, moisture content and voltage
source, required voltage increases as pressures increase.
IGNITION TIMING
At TDC (top dead center), voltage requirements will be
greatest due to high compression pressures. An advance in
timing lowers Vr as pressure decreases. Since the advance
creates higher ame temperature, Vr is further reduced by the
hotter electrodes. Retarding timing past TDC also decreases
Vr as pressures decrease, but appreciable losses of power
and temperature result.
SPEED AND LOAD
High speed and load generally produces the highest Vr due to
increased cylinder pressures despite the natural increase in
electrode temperatures.
ELECTRODE TEMPERATURE
Voltage requirements will decrease as electrode temperatures
increase and increase as temperatures decrease.
ELECTRODE CONDITION
Sharp, new electrodes concentrate the spark arcing by
offering an easier path for current ow. As new plugs with
well-dened electrodes wear, an increase in required voltage
results.
ELECTRODE MATERIAL
Commonly used electrode materials are platinum, iridium,
gold-palladium and nickel, in descending voltage equipment.
GAP SIZE
With other inuencing factors being equal, required voltages will
increase as gap size increases.
Multi-strike ignition: While multi-strike ignition can be bene-
cial for igniting the air-fuel charge, particularly in lean burn
applications, it also accelerates gap wear. To minimize wear, use
the fewest number of ignition strikes necessary to achieve
complete combustion.
COIL POLARITY
Polarity is a design feature of each ignition system. Current ow
from center electrode to ground electrode is referred to as
“negative polarity.” “Positive Polarity” is current ow from the
ground electrode to center electrode. Most all manufacturers
recommend negative polarity for best spark plug life and
performance, since reversed or positive polarity will increase
required voltages and substantially reduce ignition system
reserve.
FUEL/AIR RATIO
With other factors being equal, voltage requirements will be
lowest at the ideal stoichiometric fuel/air ratio. Voltage require-
ments increase with leaner mixtures because air is a poor
conductor.
TURBOCHARGING
Turbo charging increases the voltage requirement because of
higher cylinder pressures.
MAXIMUM
IGNITION
RESERVE
TYPICAL
IGNITION
RESERVE
NO
IGNITION
RESERVE
MISFIRE
REQUIRED VOLTAGE CHANGE OVER TIME
NEW PLUG
USED PLUG
WORN OUT PLUG
INITIAL
REQUIRED
VOLTAGE
Available voltage (Va)
Required voltage (Vr)
VOLTAGE (kV)
FIGURE 3
TECHNICAL INFORMATION
37
Factors Affecting Voltage Requirements (Vr) Continued
Factors Affecting Spark Plug Tempertures
SPEED AND LOAD
As engine power requirements increase with speed and load,
spark plug insulator temperatures increase proportionately.
Temperatures at constant speed and load will remain relatively
stable.
IGNITION TIMING
Ignition timing has one of the greatest effects on insulator
temperature. Advances in timing subjects the insulator, as
well as all other parts of the combustion chamber, to longer
periods of ame exposure. Recommended spark plug heat
ranges, therefore, must consider manufacturer’s specied
timing and fuel/air ratios. Any advances over specications
will increase insulator temperatures.
CYLINDER HEAD TEMPERATURES
Insulator temperatures will vary almost directly with cylinder
head temperatures. A fty degree increase in coolant
temperature will increase the insulator temperature
approximately fty degrees-a negligible amount. In cases of
localized cooling system blockages (liquid or air), it is possible
to create severe overheating.
Extremes in ambient operating temperatures can be detrimental
to cylinder head temperatures by creating a detonation or
pre-ignition environment.
DETONATION
Detonation produces severe pressures and temperatures which
may affect not only spark plug temperatures but also may
impose severe stress on insulators, electrodes, pistons, valves,
bearings and other engine components.
PRE-IGNITION
Pre-ignition will generally cause a very rapid and severe
temperature rise in the spark plugs and other combustion
chamber components.
INSTALLATION TORQUE
Over-torquing or under-torquing upon installation can impair heat
transfer out of the spark plug, causing the spark plug to leak and
run hotter, decreasing its life.
LOW ENGINE SPEED HIGH
LOW ENGINE LOAD HIGH
RETARDED IGNITION TIMING ADVANCED
LOW CYLINDER HEAD & COOLANT TEMPERATURE HIGH
NONE DETONATION SEVERE
NONE PRE-IGNITION SEVERE
CORRECT TORQUE INSTALLATION TORQUE OVER/UNDER-TORQUE
H
O
T
FIGURE 5
C
O
L
D
LOW COMPRESSION PRESSURE HIGH
ADVANCE AWAY FROM TDC IGNITION TIMING RETARD TOWARDSTDC
LOW SPEED AND LOAD HIGH
HOT ELECTRODE TEMPERATURE COLD
WELL DEFINED ELECTRODE CONDITION WORN
NICKEL ELECTRODE MATERIAL PLATINUM
NARROW GAP SIZE WIDE
NEGATIVE COIL POLARITY POSITIVE
STOICHIOMETRIC FUEL/AIR RATIO LEAN
LOW TURBOCHARGING HIGH
L
O
W
V
O
L
T
A
G
E
H
I
G
H
V
O
L
T
A
G
E
FIGURE 4
TECHNICAL INFORMATION
38
Heat Range Facts
The term “Heat range” refers to a spark plug’s thermal
characteristics: more specically, to its ability to dissipate
combustion heat from its ring end to the cylinder head and
cooling medium.
A spark plug must maintain an even ow of heat from its
ring end to avoid becoming a source of ore-ignition. Yet it
also must operate hot enough to burn off conductive deposits
that can short-circuit the high voltage and result in misre.
For any specic application, it is the range of temperatures
from low speed and low load to high speed and heavy load
that determines the heat range requirement of a spark plug.
From a design standpoint, the range of operating tempera-
tures is largely determined by the length of the insulator nose.
The longer the insulator nose, the hotter the spark plug.
(Figure 6)
Usually each size and design of a spark plug is manufactured
in various heat ranges as illustrated. They vary from a “colder”
type, which operates on the lower end of the temperature scale,
to a “hotter” type, which operates on the higher end of the same
scale in the same engine under identical conditions.
Spark plugs with short insulator ring tips are called “cold”
designs because they dissipate heat rapidly. They vary from a
“colder” type, which operates on the higher end of the tempera-
ture scale, to a “hotter” type, which operates on the higher end
of the same scale in the same engine under identical conditions.
(gure 7)
It is the temperature at which the plug operates that deter-
mines whether it is a hot or cold type, and not necessarily the
design.
TYPES OF GROUND ELECTRODE
There are several ground electrode congurations. Those that
project furthest from the spark plug into the combustion
chamber will have the longest heat transfer path. Four-prong
ground electrodes run colder than J-gap ground electrodes due
to the shorter heat transfer path. However ground electrode
projection may be benecial for certain applications. (Figure 8)
Thermocouple plugs designed by Champion are used to
monitor ring tip temperatures. For best service at all load
conditions, the optimum range of temperatures a plug should
operate within is between 700°F and 1200°F (400°C to
650°C). The nal selection of a plug for an engine is made on
this basis.
COPPER CORED ELECTRODES
The use of copper cored electrodes improves heat transfer,
resulting in longer gap life. Copper is used in most center
electrodes and in J-gap ground electrodes.
SEAT GASKET TEMPERATURE
Seat gasket thermocouple spark plugs can be used as an
indicator of heat transfer out of the spark plug. Spark plug seat
gaskets are intended to run no hotter than 400°F. If a seat
gasket thermocouple reads above this, spark plugs and engine
performance may be adversely affected.
Low Load High
Insulator
Tip
Temp
HOT
COLD
FIGURE 6
H O T T
Y P E (L O N
G IN S U L A T
O R N O
S E )
N
O
R
M
A
L
T Y
P E
C
O
L
D
T
Y
P
E
(S
H
O
R
T
IN
S
U
L
A
T
O
R
N
O
S
E
)
COLD GROUND
ELECTRODE DESIGN
FOUR-PRONG
COOL GROUND
ELECTRODE DESIGN
STANDARD J-GAP
WARM GROUND
ELECTRODE DESIGN
PROJECTED J-GAP
FIGURE 8
COLD TYPE
Short Heat Path
HOT TYPE
Long Heat Path
FIGURE 7
FIGURE 7
TECHNICAL INFORMATION
39
Effect of Fuel on Spark Plug Selection
Shielded Extensions, Non-Shielded Extensions, Gaskets and Terminal Nut
While most engines are designed for a specic fuel and
placed into service with specications tailored to that fuel,
some operators are making conversion to different fuels or
multi-fuel operation.
Spark plug selection of heat range and gap spacing should
follow manufacturers’ guidelines. When converting to alternative
fuels see the spark plug selection chart. (gure 9)
TYPICAL COMPOSITIONFUEL SOURCE
Natural anaerobic decomposition of organic
landll waste.
Natural anaerobic decomposition of organic waste
from sewage, animal waste or waste from
vegetable and alcohol mills.
Landll or digester gas enriched with natural gas.
APPROX. OPTIMUM AVERAGE MANIFOLD SPARK PLUG SPARK PLUG IGNITION
FUEL TYPE ENGINE COMP. RATIO OCTANE RES. NO. HEAT REQUIRED HEAT RANGE GAP SPACING VOLTAGE REQUIRED
Natural Gas (methane) 14:1 (plus) 115-120 DECREASE COLD CLOSE HIGH
LP-Gas 9:1 - 12:1 95-105
Gasoline 8:1 - 11:1 85-100
Kerosene 5:1 - 7:1 35-50
Distillate 4:1 25-30 INCREASE HOT OPEN LOW
Low energy fuels often contain contaminants which can decrease spark plug life due to deposit build-up. (Figure 10)
FIGURE 9
Digester gas
Blended fuel
55% methane and 45% CO
2
with small amounts of oxygen and
nitrogen, and contaminants such as sulfur compounds, halides,
acids and solids.
65% methane and 35% CO
2
with small amounts of oxygen and
nitrogen, and contaminants as above.
Depends on fuel concentration.
FIGURE 10
Landll gas
LOW ENERGY
TERMINAL NUT
BN9A 11276
EXTENSIONS
5/8"-20
THREAD
4" SE-4B 92966
6" SE-6B 94462
8" SE-8B 92821
10" SE-10B 11500
3/4"-20
THREAD
4" SE-4D 11496
6" SE-6D 93538
8" SE-8D 93717
10" SE-10D 11503
TEFLON IGNITION RODS
4" SE-4T 11497
6" SE-6T 11504
8" SE-8T 11505
10" SE-10T 11506
LENGTH PART# REORDER#
#8-32 INTERNAL THREAD
ALUMINUM EXTENSION RODS
3" SCE3 13587
4" SCE4 13588
5" SCE5 13589
6" SCE6 13590
8" SCE8 13591
10" SCE10 13592
12" SCE12 13594
14" SCE14 13595
16" SCE16 13596
18" SCE18 13597
20" SCE20 13599
24" SCE 24 13600
LENGTH PART# REORDER#
GASKETS
14MM N678 91954
18MM A678 91591
7/8MM A478 94349
LENGTH PART# REORDER#
LENGTH PART# REORDER#
LENGTH PART# REORDER#
3" DS3 13601
4" DS4 13602
5" DS5 13604
6" DS6 13607
8" DS8 13609
10" DS10 13610
12" DS12 13611
14" DS14 13612
16" DS16 13613
18" DS18 13614
20" DS20 13615
24" DS24 13617
#50kV RESISTANCE
LENGTH PART# REORDER#
TEFLON DIELECTRIC SHIELDS
Spark Plug Shielded Extensions Spark Plug Non-Shielded Extensions
TECHNICAL INFORMATION
40
Integral Coil Features
Shielded Extension Features and Installation
Integral coils must be installed at a maximum of
5 lb-ft after the spark plug has been installed to
follow coil manufacturer instructions for
tightening. Over-torque can cause damage to
coil and/or plug, resulting in possible engine
damage. The “T” type and “G” type spark plugs
described below are designed to be used in
conjunction with ignition systems utilizing an
integral (transformer) coil. These plugs along
with the use of integral coils have been approved
by Canadian Standards Association for Class1,
Group D, Division 2 hazardous-location service.
“T” TYPE SPARK PLUGS
A “T” type spark plug is shown in
Figure 11. Typical plugs are the
RTM82WPCC, RTM77N,
RTM78N, RTB78N, RTB80N,
RTL85G, RTN79G, TJ83,
RTW80N and RTW83F. These
coils require that the shell
turnover has a 13/16” thread to
accommodate the female
threaded coil.
“G” TYPE SPARK PLUG
A “G” type spark plug is
shown in Figure 12. Typical
plugs are the RGC80N,
RGC80F and RGC77N in the
7/8” line and the RGM86N in
the 18mm line. These utilize a
1” upper female threaded
shell.
NOTE: This extension assembly can only be used with spark plug with a 1” well
depth such as RHL79G, RHL89G, RHN79G, RHM77N, RHM83N, RHM85G,
RHW79N, RHB81N. The following have a 2” well and require a brass rod adapter:
RHM78PP, RHM78WPCC, RHW77N, RHW78N, RHW80N, HW83F.
FIGURE 12FIGURE 11
Grommet Spring Assembly
included with 3/4" -20 shielded extension
Shielded Extension
1-1/16"
Typical Shielded Spark Plug
Teon Ignition Rod
Install spark plug and tighten to recommended torque.
Take center rod and install spring assembly and rubber grommet
with at least 1-1/2" of center rod extending from bottom.
Insert center rod with spring assembly and grommet into
shielded spark plug.
Install shielded extension over the center rod pushing the
grommet and spring assembly down to the shell. This will
ensure the center rod is in contact with the terminal of the
spark plug.
Tighten shielded extension to a maximum of 5 lb-ft.
TECHNICAL INFORMATION
41
NORMAL
Appearance. Slight even wear on electrodes, very light
deposits, a coloring of brown or grayish tan. Very clean,
deposit-free ring ends are common on LP and natural gas
applications.
Indication. Correct spark plug for application; cylinder from
which removed is “healthy.”
WORN OUT
Appearance. Very pronounced wear on electrodes, widened
gap space.
Indication. Worn condition creates high voltage requirement
and stresses the ignition system. Replace with equivalent
heat range, perform routine ignition maintenance.
BRIGED GAP
Appearance. A deposit lodged between the electrodes
which “short-circuits” the ignition voltage.
Indication. Flaking off of combustion chamber deposits.
May happen after long periods of constant speed and load
operation followed by cyclic accelerations.
OIL ASH DEPOSITS
Appearance. Light colored (generally grayish) crusty build-up
on spark plug ring end. May vary in density from very soft
and aky to extremely hard and rock-like.
Indication. Residual deposits from oil entering the
combustion chamber in small amounts and being burned.
These deposits, depending on oil additives, may be
non-conductive and harmless. However, sufcient quantities
of these deposits may build to mask the entire ring end and
affect initiation of combustion. Should the deposits be
conductive, the potential is great for core nose tracking and
misre.
LANDFILL GAS DEPOSITS
Appearance. Light colored (generally white) crusty build-up
on spark plug ring end. May vary in density from very soft
and aky to extremely hard and rock-like.
Indication. Residual deposit from an engine operated on gas
from a landll. This type of fuel is often referred to as “dirty”
gas, thus the naturally occurring deposits. These deposits
may be non-conductive and harmless, but sufcient quantities
may build to mask the entire ring end and interfere with the
initiation of combustion. Should the deposits be conductive,
the potential is great for core nose tracking and misre.
An effective way to diagnose an engine’s
operating conditions is to examine the used spark
plugs for abnormal conditions. If all systems of a
given cylinder are in proper working condition, the
recommended spark plug will take on deposit, gap
wear and insulator coloring characteristics which
must be considered normal. By indexing each
plug to its respective cylinder and location during
removal, the technician can later scrutinize the
plug under magnication to determine the
possibility of engine abnormalities.
This procedure can be very useful if conducted as
part of regular maintenance inspections. The
following series of photographs and explanations
may serve as a guide to spark plug and engine
analysis; conditions will vary from engine to
engine.
DETONATION
Appearance. Electrodes or insulator fractured/physically
broken as if by mechanical means.
Indication. Engine operated under abnormal combustion-
detonation (uncontrolled burning or exploding of the fuel/air
charge). Generally due to excessive temperature from
over-heating, improper fuel/air ratios, over-advanced timing,
cooling system blockages, insufcient engine tolerances, or
improper balance of fuel mixture and timing.
PRE-IGNITION
Appearance. Overheated spark plug with electrodes and/or
insulator melted.
Indication. Engine operated under abnormal combustion-
pre-ignition (ignition prior to timed spark). Pre-ignition generally
results from excessive temperatures created by “hot spots,”
possibly carbon, sharp valve edge, gasket protruding into the
chamber, or improper heat range plug.
CORE NOSE TRACKING
Appearance. Ignition marks etched into the insulator core
nose, or its deposits, that travel from the center electrode up the
core nose to ground within the shell bore. These marks are
often black in color.
Indication. Misre may occur as the ignition spark has found an
alternate path to ground as opposed to the desired path of
arcing from center electrode to the ground electrode. Tracking
can be caused by any of the following conditions: Conductive
deposits on the insulator core nose, too wide a spark gap, too
lean a fuel/air ratio, increased cylinder pressures at time of
ignition.
CARBON FOULED
Appearance. Soft, black sooty deposits covering ring end.
Indication. Possible problem in the fuel delivery system – overly
rich. Weak ignition system, ashover or secondary voltage, leak,
or extremely low compression. More common to gasoline fueled
auxiliary type engines.
TORCHED SEAT
Appearance. Cutting torch effect in the thread and seat area of
the plug shell.
Indication. Plug was not seated properly, could not dissipate
heat and allowed gases to blow by the threaded area.
SPARK PLUG ANALYSIS
42
Normal
Usure normale
Normal
Core Nose Tracking
Traces de cheminement de l’isolant
Formación de trayectorias en la nariz
Carbon Fouled
Calaminage
Cubiertas de carbón
Détonation
Detonación
Préallumage
Encendido prematuro
Torched Seat
Siège brûlé
Asiento quemado
Worn Out
Usure totale
Desgastada
Bridged Gap
Écartement obstrué
No existe separación entre puntas
Landll Gas DepositsOil Ash Deposits
Dépôts résiduels d’huile
Depósitos de cenizas aceitosas
Dépôts résiduels de gas d’enfouissement
Depósitos de gas de vertedero
Detonation
Pre-ignition
SPARK PLUG ANALYSIS
