Page 135 - US ACCESSORIES GUIDE (2019)

MERCRUISER

Model CID/ #Cyl Type of Ignition Year Range Serial # Range Spark Plug Spark Plug Gap
370 TRS 454/ V-8 Holley 1978 - 1985 4883520 - 6721527 33-898264001 .035
370 TRS 454/ V-8 Thunderbolt IV 1985 - 1987 6721528 - 0B714586 33-898264001 .035
400 TRS 454/ V-8 Mallory 1980 - 1986 5668232 - 0B457644 33-813421 4 .035
400 TRS 454/ V-8 Holley 1980 - 1986 5668232 - 0B457644 33-898264001 .035
420 454/ V-8 Thunderbolt IV 1987 - 1989 0A398941 - 0B622418 33-898264001 .035
425 454/ V-8 Thunderbolt IV 1990 - 1993 0B622419 - 0D937011 33-898264001 .035
440 TRS 454/ V-8 Mallory 1983 - 1986 6181070 - 0B485220 33-813421 4 .035
440 TRS 454/ V-8 Holley 1983 - 1986 6181070 - 0B485220 33-898264001 .035
450 454/ V-8 Thunderbolt IV 1995 - 1996 0F347100 - 0F347277 33-898264001 .035
454 Mag. Alpha 454/ V-8 Thunderbolt IV 1986 - 1988 0A631894 - 0B785148 33-898264001 .035
454 Mag. Bravo 454/ V-8 Thunderbolt IV 1988 - 1997 0B721206 - 0K999999 33-898264001 .035
454 Mag. EFI 454/ V-8 Delco - HEI 1994 - 1996 0F115700 - 0F802349 33-898264001 .035
454 Mag. EFI Ski 454/ V-8 Delco - HEI 1995 - 1996 0F215800 - 0F820099 33-898264001 .035
454 Mag. MPI 454/ V-8 Delco - HEI 1996 - 2001 0F802350 - 0M024999 33-898264001 .040
454 Mag. MPI Horizon MIE 454/ V-8 Delco - HEI 1998 - 2001 0L002200 - 0L674000 33-898264001 .040
454 Mag. MPI Ski 454/ V-8 Delco - HEI 1996 - 1997 0F820100 - 0K999999 33-898264001 .040
525 SC 454/ V-8 Thunderbolt IV 1991 - 1999 0D456000 - 0L415623 33-898264001 .035
454/ V-8
1988 - 1997
0B771113 - 0K999999
Thunderbolt IV
.035
7.4L Bravo
33-898264001
MERCRUISER 7.4L EFI MIE 454/ V-8 Delco - HEI 1996 - 1997 0F874815 - 0K999999 33-898264001 .035
Thunderbolt IV & V
.035
454/ V-8
33-898264001
1981 - 1997
5889914 - 0K999999
7.4L MIE
7.4L MPI (L29)
33-816336Q
.045
1998 - 2001
Delco - HEI
454/ V-8
0L010003 - 0M024330
7.4L MPI MIE
0L002006 - 0L674613
33-816336Q
7.4L MPI MIE (L29) 454/ V-8 Delco - HEI 1995 - 1997 0F563052 - 0K999999 33-898264001 .035
.045
1998 - 2001
Delco - HEI
454/ V-8
7.4LX Bravo EFI 454/ V-8 Delco - HEI 1996 - 1997 0F820000 - 0K999999 33-898264001 .035
7.4LX Bravo MPI 454/ V-8 Delco - HEI 1996 - 1997 0F602010 - 0K999999 33-898264001 .035

390 482/ V-8 Thunderbolt 1969 - 1970 2781129 - 2825059 N.L.A. .035
460 TRS 482/ V-8 Mallory & Holley 1983 - 1986 6180970 - 6181046 33-813421 4 .035

496 Mag & HO 496/ V-8 Delco 2001 - 2010 0M025000 - 1A352731 33-8M0129146 .060
496 Mag & HO EC 496/ V-8 Delco 2008 - 2010 1A066166 - 1A350440 33-8M0129146 .060
8.1S & HO MIE 496/ V-8 Delco 2001 - 2010 0M026000 - 1A380318 33-8M0129146 .060
8.1S & HO MIE EC 496/ V-8 Delco 2008 - 2010 0W697154 - 1A380251 33-8M0129146 .060

500 502/ V-8 Thunderbolt IV 1994 - 1998 0F213293 - 0L001772 33-898264001 .035
500 (Gen +) 502/ V-8 Thunderbolt IV 1999 0L414639 - 0L601036 33-898264001 .035
500 EFI 502/ V-8 Delco - HEI 1998 - 2005 0L001477 and up 33-898264001 .035
502 Mag. 502/ V-8 Thunderbolt IV 1990 - 1993 0C878221 - 0F114528 33-898264001 .035
502 Mag. EFI 502/ V-8 Delco - HEI 1993 - 1996 0D840650 - 0F802599 33-898264001 .035
502 Mag. MPI 502/ V-8 Delco - HEI 1996 - 2001 0F802600 - 0M024999 33-898264001 .040
525 EFI 502/ V-8 Mercury - HEI 2003 - 2019 0M900146 and up 33-8M0114747 .035
575 SCi 502/ V-8 Delco - HEI 2000 - 2005 0L306696 - 0M950526 33-813421 4 .040
600 SC 502/ V-8 Thunderbolt IV 1991 - 1993 0D456489 - 0D763875 33-898264001 .035
600 SC 502/ V-8 Thunderbolt IV 1993 - 1996 0D763876 - 0F877642 33-813421 4 .035
8.2L Mag 502/ V-8 Mercury - HEI 2010 - 2019 1A351597 and up 33-8M0114747 .060
8.2L Mag EC 502/ V-8 Mercury - HEI 2010 - 2019 1A350340 and up 33-8M0114747 .006
8.2L MIE 502/ V-8 Thunderbolt IV & V 1990 - 1996 0C878221 - 0F819619 33-898264001 .035
8.2L MIE 502/ V-8 Mercury - HEI 2010 - 2019 1A350802 and up 33-8M0114747 .060
8.2L MIE EC 502/ V-8 Mercury - HEI 2010 - 2019 1A350802 and up 33-8M0114747 .060
8.2L MPI MIE 502/ V-8 Delco - HEI 1996 - 2001 0F819620 - 0L674200 33-898264001 .040

500 Bulldog 540/ V-8 Thunderbolt IV 1990 - 1996 0C577003 - 0F745405 33-898264001 .035
500 Bulldog 540/ V-8 Thunderbolt IV 1997 - 2001 0K000248 - 0M050281 33-898264001 .040
575 540/ V-8 Thunderbolt IV 1986 - 1992 0A677429 - 0D763716 33-813421 4 .035
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