Sierra Marine Parts Catalog

744 I/O — MERCRUISER - Cooling System THERMOSTAT APPLICATION (Cont.) Engine/Model CID/#CYL YearRange Beginning Serial# EndingSerial# Housing Thermostat Cover Thermostat& GasketKit Thermostat GasketsReq. Gaskets Req.- Design II GasketsReq.- Design III 228 305/V-8 1982-1984 6218462 6899268 18-1994 18-1977-1 18-3668 18-3551 18-2554 18-2553 18-2917 228 MIE 305/V-8 1977-1980 4765100 5907057 18-3651, 18-1993 18-1977-1 18-3646 18-3551 18-2844 18-1993 230 305/V-8 1985-1987 6899269 B773739 18-1994 18-1977-1 18-3668 18-3551 18-2554 18-2553 18-2917 230 MIE 305/V-8 1981-1987 5907058 B788151 18-1994 ❼ 18-1977-1 18-3668 18-3551 18-2554 18-2553 18-2917 230 MIE FWC 305/V-8 1981-1987 5907058 B788151 ❻ 18-1977-1 18-3646 18-3551 18-2553 18-2844 18-2917 230GM 6218462 B525981 18-1994 ♥ 18-3668 18-3551 18-2553 18-2554 230MIE 5907058 0B5225505 18-3646 18-3649 ♣ 18-2553 18-2844 18-2917 230GM IB ➄ 5907058 B522505 ❼ 18-3668 18-3551 18-2553 18-2554 230GM IB ➅ 5907058 B522505 ❻ 18-3651 18-3551 18-2553 18-2844 230/5.0LGM IB ➂ ➄ B522506 B525981 ☞ , ❼ 18-3668 18-3551 18-2553 18-2554 18-2917 230/5.0LGM IB ➃ ➄ B522506 B525981 ♠ , ❼ 18-3648 18-3649 ♣ 18-2552 18-7173 18-2917 230/5.0LGM IB ➅ B522506 B525981 18-3651 18-3551 18-2553 18-2844 18-2917 230/5.0L-LXGM ➂ B525982 F600999 18-1994 ♥ 18-3668 18-3551 18-2553 18-2554 230/5.0L-LXGM ➃ B525982 UP 18-3668 18-3551 18-2552 18-7173 230/5.0LGM IB ➃ B522506 B525981 18-3648 18-3649 ♣ 18-2552 18-7173 230/5.0L-LXGM B525982 F600999 18-1994 ♥ 18-3648 18-3649 ♣ 18-2552 18-7173 230/5.0LMIE 0B522506 0B788151 18-3646 18-3649 ♣ 18-2553 18-2844 18-2917 230/5.0LXGM 0B525982 0F600999 18-3647 18-3649 ♣ 18-2917 — 5.0L 305/V-8 1988-1995 B774445 F600999 18-1994 ❶ 18-1977-1 18-3668 18-3551 18-2554 18-2553 5.0L 305/V-8 1988-1995 B774445 F600999 ❷ , ❽ 18-3668 18-3551 18-7173 18-2552 5.0L 305/V-8 1988-1995 B774445 F600999 ❷ , ❾ 18-3668 18-3551 18-7173 18-2552 5.0L 305/V-8 1988-1995 B774445 F600999 ❸ 18-3647 18-3649 18-0398 18-2917 5.0L (GEN+) FWC 305/V-8 1998-2002 L015751 M599999 18-3531 ❻ 18-3568 18-3555 18-1508 18-2917 5.0L (GEN+) FWC 305/V-8 2002-2010 M600000 &UP ❻ 18-0398 18-2917 5.0L (GEN+) ALPHA 305/V-8 1998-2002 L015751 M599999 ❼ 18-3647 18-3649 18-0398 5.0L (GEN+) BRAVO 305/V-8 1998-2002 L015751 M599999 18-3530-1 ❼ 18-3647 18-3649 18-0398 5.0L (GEN+) 305/V-8 2002-2010 M600000 &UP ❼ 18-3647 18-3649 18-0398 5.0L EFI FWC 305/V-8 1998-2001 L012052 M299999 18-3531 ❻ 18-3568 18-3555 18-1508 5.0L EFI ALPHA 305/V-8 1998-2001 L012052 M299999 ❼ 18-3647 18-3649 18-0398 5.0L EFI BRAVO 305/V-8 1998-2001 L012052 M299999 18-3530-1 ❼ 18-3647 18-3649 18-0398 5.0L MIE FWC 305/V-8 1988 B788152 C396832 ❻ 18-1977-1 18-3646 18-3551 18-2553 18-2844 5.0L MIE 305/V-8 1988 B788152 C396832 ❼ , ❽ , ➀ 18-3668 18-3551 18-7173 5.0L MIE 305/V-8 1988 B788152 C396832 18-1994 ❶ , ❼ 18-1977-1 18-3668 18-3551 18-2554 18-2553 5.0L MPI FWC 305/V-8 2002 M300000 M599999 ❻ 18-3568 18-3555 18-0398 5.0L MPI FWC 305/V-8 2002-2010 M600000 &UP ❻ 18-0398 18-2917 5.0L MPI FWC DTS 305/V-8 2005-2010 W310000 &UP ❻ , ➆ 18-0398 18-2917 5.0L MPI FWC EC 305/V-8 2008-2010 A300000 &UP ❻ , ➅ , ➇ 18-0398 5.0L MPI FWC EC DTS 305/V-8 2008-2010 A300000 &UP ❻ , ➆ , ➇ 18-0398 5.0L MPI 305/V-8 2002-2010 M300000 &UP ❼ , ➃ 18-3647 18-3649 18-0398 18-2917 5.0L MPI ALPHA 305/V-8 2002 M300000 M599999 ❼ , ➄ 18-3647 18-3649 18-0398 5.0L MPI BRAVO 305/V-8 2002 M300000 M599999 18-3530-1 ❼ , ➄ 18-3647 18-3649 18-0398 5.0L MPI 305/V-8 2002-2010 M600000 &UP ❼ , ➄ 18-3647 18-3649 18-0398 5.0L MPI EC 305/V-8 2008-2010 A300000 &UP ❼ , ➇ 18-3647 18-3649 18-0398 5.0L LX 305/V-8 1988-1995 B773740 F600999 18-1994 ❶ 18-1977-1 18-3668 18-3551 18-2554 18-2553 18-2917 5.0LX 305/V-8 1988-1995 B773740 F600999 ❷ , ❽ 18-3668 18-3551 18-7173 18-2552 5.0LX 305/V-8 1988-1995 B773740 F600999 ❸ 18-3647 18-3649 18-0398 898 305/V-8 1977-1982 4762210 6218461 18-1977-1 18-3646 18-3551 18-2844 18-0398 898 305/V-8 1983-1984 6218462 6899057 18-1994 18-1977-1 18-3668 18-3551 18-2554 18-2553 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