Sierra Marine Parts Catalog

750 Engine/Model CID/#CYL YearRange Beginning Serial# EndingSerial# Housing Thermostat Cover Thermostat& GasketKit Thermostat GasketsReq. Gaskets Req.- Design II GasketsReq.- Design III 7.4L MIE 454/V-8 1988-1992 B788366 D715493 ❼ , ❽ 18-3668 18-3551 18-2554 18-2553 18-0398 7.4L MIE 454/V-8 1989-1994 C391564 D715493 ❼ 18-3668 18-3551 18-7173 18-2552 18-0398 7.4L MIE FWC 454/V-8 1989-1994 C391564 D715493 ❻ 18-3646 18-3551 18-2553 18-2844 18-0398 7.4L MIE 454/V-8 1989-1994 D715494 F349999 ❼ 18-3668 18-3551 18-7173 18-2552 18-0398 7.4L MIE FWC 454/V-8 1989-1994 D715494 F820141 ❻ 18-3646 18-3649 18-2553 18-2844 18-0398 7.4L MIE 454/V-8 1995-1996 F350000 F820141 ❼ 18-3647 18-3649 18-0398 7.4L MIE 454/V-8 1996-1997 F820142 K999999 ❼ 18-3647 18-3649 18-0398 7.4L MIE 454/V-8 1996-1997 F820142 K999999 ❻ 18-3647 18-3649 18-2844 18-0398 7.4L MPI 454/V-8 1998-2001 L010003 M024330 ❼ 18-3647 18-3649 18-0398 7.4L MPI MIE 454/V-8 1995-2001 F563052 M025999 ❼ 18-3647 18-3649 18-0398 7.4L MPI MIE FWC 454/V-8 1995-2001 F563052 M025999 ❻ 18-3568 18-3555 18-0398 7.4LX BRAVO EFI 454/V-8 1996-1997 F820000 K999999 ❼ 18-3647 18-3649 18-0398 7.4L BRAVO MPI 454/V-8 1996-1997 F602010 K999999 ❼ 18-3647 18-3649 18-0398 7.4LMIE 0C391564 0D715493 18-3646 18-3649 18-2553 18-2844 18-2917 7.4LMIE 0C391564 0F349999 18-3646 18-3649 18-2553 18-2844 18-2917 390 MCM/MIE 482/V-8 1969-1970 2781129 3042731 18-3646 18-3551 18-2553 18-2844 18-0398 460 482/V-8 1983-1986 4179554 6181046 18-3668 18-3551 18-2554 18-2553 18-0398 465 502/V-8 1990-1994 C849992 F213244 18-3678 18-3551 18-2553 18-0398 470 4208730 6218036 18-3652 18-3552 18-2843 470 6218037 UP 18-3667 18-3555 18-2555 — 485 5685394 UP 18-3652 18-3552 18-2555 — 488 6170297 UP 18-3667 18-3555 18-2555 — 500 502/V-8 1994-1998 F213293 L001772 18-1994 18-1977-1 18-3551 18-2553 18-0398 500 (GEN+) 502/V-8 1999 L414639 L601036 18-1994 18-1977-1 18-3551 18-2553 18-0398 500 EFI 502/V-8 1999-2005 L001477 M907127 18-1977-1 18-3551 18-2553 18-0398 502 MAG 502/V-8 1990-1993 C878221 F114528 ❽ 18-3668 18-3551 18-7173 18-2552 18-0398 502 MAG EFI 502/V-8 1993-1995 D840650 F802599 ❼ 18-3647 18-3649 18-0398 502 MAG MPI 502/V-8 1996-1997 F802600 K999999 ❼ 18-3647 18-3649 18-0398 502 MAG MPI FWC 502/V-8 1998-2001 L017000 M024999 18-3531 ❻ 18-3568 18-3555 18-0398 525 EFI 502/V-8 2003-2010 M900146 &UP N/A 18-1508 575GM 0A677429 0D763716 18-3646 18-3649 18-2553 18-2844 18-2914 575 A677429 UP 18-3651 18-3551 18-2553 18-2844 8.2L MAG 502/V-8 2010 A350340 &UP 18-1508 8.2L MIE EC 502/V-8 2010 A350802 &UP 18-1508 8.2L MIE 502/V-8 1990-1992 C878221 D857199 ❼ 18-3668 18-3551 18-7173 18-2552 18-0398 8.2L MIE FWC 502/V-8 1990-1992 C878221 D857199 ❻ 18-3668 18-3551 18-2553 18-2844 18-0398 8.2L MIE 502/V-8 1993-1996 D857200 F350274 ❼ 18-3647 18-3649 18-0398 8.2L MIE 502/V-8 1996 F350275 F819619 ❼ 18-3647 18-3649 18-0398 8.2L MIE FWC 502/V-8 1993-1996 D857200 F819619 ❻ 18-3647 18-3649 18-2844 18-0398 8.2L MPI MIE 502/V-8 1996-2001 F819620 L674200 ❼ 18-3647 18-3649 18-0398 8.2L MPI MIE FWC 502/V-8 1996-2001 F819620 L674200 18-3531 ❻ 18-3568 18-3555 18-1508 500 BULLDOG 540/V-8 1990-2001 C577254 M050281 18-1994 18-1977-1 18-3551 18-2553 18-0398 888FORD 3108723 UP 18-3651 18-3551 18-2834 888FORDMCM 3108723 4887829 18-3646 18-3649 18-2834 898/198GM 4762210 6218461 18-3651 18-3551 18-2844 898/198GMMCM/MIE 4762210 6218461 18-3646 18-3649 18-2844 18-2917 898GM 1977-1982 4762210 6218461 18-1993 898GM 6218462 UP 18-3668 18-3551 18-2553 18-2554 THERMOSTAT APPLICATION (Cont.) ❶ Design I ❷ Design II ❸ Design III ❹ Aluminum Exhaust Manifold ❺ Cast Iron Exhaust Manifold ❻ Closed Cooling ❼ Standard Cooling ❽ With check ball ❾ Without check ball ❿ SN 4167000 & Up ➀ Original thermostat housing listed as NLA. Order update kit 87290A23 ➁ Original thermostat housing listed as NLA. Order update kit 90736A24 ➂ Complete thermostat housing kit kit ➃ Single and 3-point drain system ➄ 7-point drain system ➅ Mechanical Throttle Body ➆ Digital Throttle Body ➇ Emission Control Engine ➈ Manual drain system ➉ Air Actuated drain system ☞ Old Design ♠ New Design ♣ 160 degree ♥ For Stainless Steel version use 18-1989 I/O — MERCRUISER - Cooling System