STITT Spark Plug Engine Recommendations
for
"CP" OR "DCP" Style Integral Coil
1" - 20 UNEF-2B Plugs
Compatible with CSA, FMR Class 1, Group D, Div. 2 Requirement

Click on the manufacturer of your engine.
AJAX (Cooper Energy Services) ARIEL
ARROW CATERPILLAR
CLARK (Dresser Clark) COOPER-BESSEMER
CUMMINS CUMMINS NATURAL GAS ENGINES
DELAVAL (Transamerica) DRESSER-RAND
ENTERPRISE (See also DeLaval) FAIRBANKS-MORSE (Coltec)
GEMINI HERCULES
INGERSOLL-RAND KUBOTA
LISTER PETTER LORAIN
LUFKIN M.E.P. INDUSTRIES
MINNEAPOLIS - MOLINE NORDBERG (Hatch & Kirk)
OILWELL SUPERIOR (Cooper Energy Services)
WAUKESHA WORTHINGTON

 

AJAX (Cooper Energy Services)

Engine Model Plug Gap STITT Part No. Reach
C30, C40, C42, CMA, E-15 .025

CP-107

5/8"
EA15, E30, EA30, E42 .025

CP-107

5/8"
DP60, DPC60, DP80 .025

CP-107

5/8"
DPC80, DPC105, DP115 .025

CP-107

5/8"
DP125, DPC140, DP160 .025

CP-107

5/8"
DPC160, DPC162, DP165 .025

CP-107

5/8"
DPC180, DPC230, DPC280 .025

CP-107

5/8"
DP300, DPC300, DP325 .025

CP-107

5/8"
DPC360, DPC540 .025

CP-107

5/8"
DPC600, DPC800 .025

CP-107

5/8"
2801, 2802, 2803, 2804

 .015

 CP-R107

5/8"
Pre-combustion chamber .010

CP-107

5/8"

Top of Page

 

ARIEL

Engine Model Plug Gap STITT Part No. Reach
162JGS/1, 325JGS/1 .015

DCP-407XLB

3/4"

Top of Page

 

ARROW

Engine Model Plug Gap STITT Part No. Reach
C-46, C-66, C96, C106, C245, C255 .025

CP-887

1/2"
L-795, L-1770, L-2165 .025

CP-E79

.870"

Top of Page

 

CATERPILLAR

Engine Model Plug Gap STITT Part No. Reach
G-333, G-3304, G-3306
1/2" REACH CYL. HEADS .015

DCP-407LB

1/2"
3/4" REACH CYL. HEADS .015

DCP-407XLB

3/4"
G-343 .015

DCP-407XLB

3/4"
G-342, G-353, G-379 .015

DCP-407LB

1/2"
G-397, G-398, G-399 .015

DCP-407LB

1/2"
3400 SERIES .015

DCP-407XLB13

3/4"
3500 SERIES Consult STITT Factory
3600 SERIES Consult STITT Factory

Top of Page

 

CLARK (Dresser Clark)

Engine Model Plug Gap STITT Part No. Reach
RA, RAS, HRA, HRAT .015

DCP-107B

5/8"
MA, HMA .015

DCP-107B

5/8"
BA, HBA, HBAT, TLA, TCV .015

DCP-107B10

5/8"
HLA, HLAT, TMB, TRA .015

DCP-107B

5/8"
Pre-combustion chamber modifications Consult STITT Factory

Top of Page

 

COOPER-BESSEMER

Engine Model Plug Gap STITT Part No. Reach
GMV, GMVA, GMVC, GMVE, GMVH GMW, , GMWA, GMCA, GMWH, GMX GMXD, GMXE, , GMXH, V-250, V-275 W-330, Z-330, QUAD
Short Reach (5/8") .015

DCP-107B

5/8"
Long Reach (7/8") .015

DCP-717B

.870"
LS, LSV 7/8"-18 Heads Consult STITT Factory
LS, LSV 1-1/8"-12 Heads Consult STITT Factory
JS Consult STITT Factory
Jet Cell® Pre-Combustion Chambers Consult STITT Factory

Top of Page

 

CUMMINS

Engine Model Plug Gap STITT Part No. Reach
GNHC-4, GNH-220 3/8" Reach Consult STITT Factory
GNH-250, GV-12450 3/8" Reach Consult STITT Factory
GM-12-525 3/8" Reach Consult STITT Factory
GNHC-4, GNH-220 1/2" Reach Consult STITT Factory
GNH-250, GV-12450 1/2" Reach Consult STITT Factory
GM-12-525 1/2" Reach Consult STITT Factory

Top of Page

 

CUMMINS NATURAL GAS ENGINES

Engine Model Plug Gap STITT Part No. Reach
G-495, G-743, G-855 .020

DCP-407XLB13

3/4"
G-1710, GTA-743, GTA-855 .020

DCP-407XLB13

3/4"
GTA-1710 .020

DCP-407XLB13

3/4"

Top of Page

 

DELAVAL (Transamerica)

Engine Model Plug Gap STITT Part No. Reach
HV-8, HVA-8, HV-12, HVA-12 Consult STITT Factory
HV-16, HVA-16, HVA-20, HA-6 Consult STITT Factory

Top of Page

 

DRESSER-RAND

Engine Model Plug Gap STITT Part No. Reach
KVGR .015

CP-107

5/8"
KVSR, KVSE, KVR .015

CP-E72

5/8"
TCVD, TLAD .015

DCP-107B10

5/8"
Pre-chamber modifications Consult STITT Factory

Top of Page

 

ENTERPRISE (See also DeLaval)

Engine Model Plug Gap STITT Part No. Reach
All Engines with 18mm 13/16" Reach Cylinder Heads Consult STITT Factory

Top of Page

 

FAIRBANKS-MORSE (Coltec)

Engine Model Plug Gap STITT Part No. Reach
OP38 Series Consult STITT Factory

Top of Page

 

GEMINI

Engine Model Plug Gap STITT Part No. Reach
G26, G35 .020

DCP-407LB

1/2"

Top of Page

 

HERCULES

Engine Model Plug Gap STITT Part No. Reach
G-1600 Consult STITT Factory
G2300, G3400 Consult STITT Factory
G4800 .020

DCP-407XLB

3/4"

Top of Page

 

INGERSOLL-RAND

Engine Model Plug Gap STITT Part No. Reach
JVG, KVG, KVGR, KVT, PJVG, PKV Consult STITT Factory
PKVGR, PKVT, PSVG, PVG, SVG Consult STITT Factory
SVO, SVS, TVR, TVS, VG Consult STITT Factory
KVR, KVS, KVSR, KVSRA Consult STITT Factory
PKVR, PKVSR Consult STITT Factory
7/8"-18 Heads 7/8" Reach Consult STITT Factory
7/8"-18 Heads 1" Reach Consult STITT Factory

Top of Page

 

KUBOTA

Engine Model Plug Gap STITT Part No. Reach
KNG1600E, KNG3200E .015

DCP-407XLB

3/4"

Top of Page

 

LISTER PETTER

Engine Model Plug Gap STITT Part No. Reach
HR2G, HR3G .015

CP-R807

1/2"

Top of Page

 

LORAIN

Engine Model Plug Gap STITT Part No. Reach
30, 37, 40, 50 Consult STITT Factory
A, L, O, R 7/8"-18 Heads Consult STITT Factory

Top of Page

 

LUFKIN

Engine Model Plug Gap STITT Part No. Reach
GSC Consult STITT Factory
GSD, GSDH, HC333, HT333 Consult STITT Factory
H795 Consult STITT Factory
H1770, H2165 Consult STITT Factory

Top of Page

 

M.E.P. INDUSTRIES

Engine Model Plug Gap STITT Part No. Reach
M.E.P. 6, 8, 10, 12 Consult STITT Factory

Top of Page

 

MINNEAPOLIS - MOLINE

Engine Model Plug Gap STITT Part No. Reach
HD-336-4A, HE-425-6A Consult STITT Factory
HD-504-6A, HD605-6A Consult STITT Factory
HD-800-6A, HDT-800-60A Consult STITT Factory
HD-1210, HD-1600 Consult STITT Factory
All with 7/8"-18 Heads Consult STITT Factory
All with 14mm Heads Consult STITT Factory

Top of Page

 

NORDBERG (Hatch & Kirk)

Engine Model Plug Gap STITT Part No. Reach
FSE96 Consult STITT Factory

Top of Page

 

OILWELL

Engine Model Plug Gap STITT Part No. Reach
All 18mm Heads Consult STITT Factory

Top of Page

 

SUPERIOR (Cooper Energy Services)

Engine Model Plug Gap STITT Part No. Reach
6G510, 6G825, 8G825 .020

CP-R807

1/2"
12G825, 16G825 .020

CP-R807

1/2"
6GT510, 6GTL, 80G6, 80GX6 .020

CP-R807

1/2"
6GX825, 6GT825, 8GT825 .020

CP-R807

1/2"
8GTL, 80G8, 80GX8, 8GX825 .020

CP-R807

1/2"
12GT825, 12SGT, 12GTL .020

CP-R807

1/2"
16SGT, 16GTL, 16GT825 .020

CP-R807

1/2"
All GTLA-GTLB Models .015

CP-R807NP***

1/2"
All 7/8"-18 Heads .020

CP-107

5/8"

Top of Page

 

WAUKESHA

Engine Model Plug Gap STITT Part No. Reach
F1197 Consult STITT Factory
F817G (14mm Heads) .020

DCP-47B

3/8"
F817G (18mm Heads) .015

DCP-87B

1/2"
F1905, H2476 .015

CP-R807

1/2"
H2475G, L37116, L3712 .015

CP-R807

1/2"
VRG Series Engines
VRG220, VRG330 Consult STITT Factory
VRG265, VRG283, VRG310 Consult STITT Factory
VRG155, VRG232 Consult STITT Factory
VHP Series Engines
F2895G, F2895GSI .015

DCP-R807B8

1/2"
F3521G, F3521GSI .015

DCP-R807B8

1/2"
F5108G, F5108GSI .015

DCP-R807B8

1/2"
L5790G, L5790GSI .015

DCP-R807B8

1/2"
L7042G, L7042GSI .015

DCP-R807B8

1/2"
P9390G, P9390GSI .015

DCP-R807B8

1/2"
VHP-GL (Pre-Chamber Engines)
2895GL, 3521GL, 5108GL .010

DCP-R807B8

1/2"
5790GL, 7042GL, 9390GL .010

DCP-R807B8

1/2"
VGF Series Engines
F18G, F18GL Consult STITT Factory
H24G, H24GL Consult STITT Factory
L36G, L36GL Consult STITT Factory
P48GL Consult STITT Factory
VSG Series Engines
F11G, F11GSI Consult STITT Factory
AT Series Engines
AT25, AT27 Consult STITT Factory
Obsolete Engines
180GKB, 190GLB, 195GK Consult STITT Factory
180GL, 190GL, 195GL, 140GK Consult STITT Factory
140GZ, 185GL, 145GKB, WAK Consult STITT Factory
WAKB, WAKC, NK, NKR, LRO Consult STITT Factory
LRZ, VLRO, BA, BL, MB, BK Consult STITT Factory
CHK, CHS, CR, CSR, CU, DHK Consult STITT Factory
DK, DKR, DR, DU, BK, EL, FC Consult STITT Factory
FCL, FCS, FL, FLS, GAK Consult STITT Factory
130GS, 130GL, 140GZ, 180G Consult STITT Factory
MK, ML, MS, MZA, SRK, RBR Consult STITT Factory
F2894G, F2894GSI, F3520G Consult STITT Factory
L7040G, L5100G, L5788G Consult STITT Factory
H1077G, L1616G, P2154G Consult STITT Factory

Top of Page

 

WORTHINGTON

Engine Model Plug Gap STITT Part No. Reach
UTC, SUTC, ML, MLV Consult STITT Factory
SEH, SLHC, SLHCA, SLHP Consult STITT Factory
SLDHG, SDHP Consult STITT Factory
LTC, CG, CCG, DG, DDG Consult STITT Factory
EEG, LFC, LCE, SDHG Consult STITT Factory
Horizontal, All Models Consult STITT Factory

Top of Page

 

*** Anti-Galling Surface Finish