Sierra Marine Parts Catalog

788 MANIFOLD/MANIFOLD GASKET APPLICATION (Cont.) ❶ For engines with aluminum exhaust manifolds ❷ For engines with cast iron exhaust manifolds ❸ 3” (76mm) O.D. & 0 degree down angle ❹ 3” (76mm) O.D. & 15 degree down angle ❺ 4” (102mm) O.D. ❻ 2 piece exhaust manifold ❼ 1 piece exhaust manifold ❽ Has a rectangular elbow mounting bolt pattern ❾ Has a square elbow mounting bolt pattern ❿ In-line applications ➀ V-drive applications ➁ Standard rise ➂ 2” (51mm) rise ➃ 3” (76mm) rise ➄ 6” (152mm) rise ➅ Port ➆ Starboard ➇ Engines with risers or closed cooling may require a different gasket than listed ➈ Exhaust manifold with external water rail ➉ Exhaust manifold w/o external water rail ☛ 1 piece exhaust manifold is nla. Rngine must be converted to the 2 piece exhaust system ♠ Engines with easy drain system ♣ Engines with multi-point drain system ♥ Intermediate collector housing Liter Model Note CID #Cyl. Stroke Year Range Serial # Range Exh. Manifold Port Exh. Manifold Starboard Exh. Elbow End Cap Front End Cap Rear Manifold Gasket Exh. Elbow Gasket 6.2L MX 6.2L BLACK SCORPION SKI 377 8 4 2003-2007 M391600 - W698432 18-2949 6.2L MX 6.2L BLACK SCORPION SKI 377 8 4 2003-2007 M391600 - W698432 18-2949 6.2L SCORPION 377 377 8 4 2008-2010 W698433 & UP 18-2949 6.2L SCORPION 377 377 8 4 2008-2010 W698433 & UP 18-2949 7.4L 325 427 8 4 1968 2278747 - 2313964 18-0418 7.4L 325 427 8 4 1968-1974 2313965 - 3780449 18-4009 18-1990 18-0418 18-0885-1 7.4L 325 MIE 427 8 4 1968 2278747 - 2313964 18-0418 7.4L 325 MIE 427 8 4 1968-1974 2313965 - 3780449 18-4009 18-1990 18-0418 18-0885-1 7.4L 330 454 8 4 1977-1981 4623115 - 6083144 18-4009 18-4009 18-0418 18-0885-1 7.4L 330 454 8 4 1982-1987 6083145 - B816540 18-1957-2 18-1957-2 18-1970-2 ❹ 18-0418 18-0897 7.4L 330 454 8 4 1982-1987 6083145 - B816540 18-1957-2 18-1957-2 18-1976-2 ❺ 18-0418 18-0897 7.4L 330 MIE 454 8 4 1977-1981 4623115 - 6083144 18-4009 18-4009 18-0418 18-0885-1 7.4L 340 MIE W/BW 454 8 4 1981-1987 5889914 - B788365 18-1957-2 18-1957-2 18-1974-1 ❸ 18-0418 18-0897 7.4L 340 MIE W/BW 454 8 4 1981-1987 5889914 - B788365 18-1957-2 18-1957-2 18-1970-2 ❹ 18-0418 18-0897 7.4L 340 MIE W/BW 454 8 4 1981-1987 5889914 - B788365 18-1957-2 18-1957-2 18-1976-2 ❺ 18-0418 18-0897 7.4L 350 MIE 454 8 4 1974-1975 3780450 - 4501640 18-4009 18-1990 18-0418 18-0885-1 7.4L 350 MIE 454 8 4 1976 4501641 - 4623109 18-4009 18-4009 18-0418 18-0885-1 7.4L 370 TRS 454 8 4 1978-1985 4179554 - 6721527 18-4009 18-1990 18-0418 18-0885-1 7.4L 370 TRS 454 8 4 1985-1987 6721528 - B714586 18-1957-2 18-1957-2 18-1976-2 18-0418 18-2849-1 7.4L 400 TRS 454 8 4 1980-1986 4179554 - B457644 18-4009 18-1990 18-0418 18-0885-1 7.4L 420 454 8 4 1987-1989 A398941 - B622418 18-0418 7.4L 425 454 8 4 1990-1992 G398941 - D937011 18-0418 7.4L 440 TRS 454 8 4 1983-1986 4179554 - B485220 18-0418 7.4L 450 454 8 4 1995-1996 F347100 - F347277 ➁ 18-0418 7.4L 450 454 8 4 1995-1996 F347100 - F347277 ➃ 18-0418 7.4L 450 454 8 4 1995-1996 F347100 - F347277 ➄ 18-0418 7.4L 454 MAG ALPHA 454 8 4 1986-1988 A631894 - B785148 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 454 MAG BRAVO 454 8 4 1988-1997 B721206 - K999999 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 454 MAG EFI 454 8 4 1994-1996 F115700 - F802349 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 454 MAG EFI / 454 MAG SKI 454 8 4 1995-1996 F215800 - F820099 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 454 MAG MPI 454 8 4 1996-1997 F802350 - K999999 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 454 MAG MPI 454 8 4 1998-2001 L010029 - M0224999 18-1957-2 18-1957-2 18-1976-2 18-0418 18-2849-1 7.4L 454 MAG MPI / 454 MAG HORIZON / 454 MAG MIE 454 8 4 1999-2001 L086050 - L674000 18-1957-2 18-1957-2 18-1976-2 18-0418 18-2849-1 7.4L 454 MAG MPI / 454 MAG SKI 454 8 4 1996-1997 F820100 - K999999 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 525 SC W/BRAVO 454 8 4 1991-1996 D456000 - F877734 ➁ 18-0418 7.4L 525 SC W/BRAVO 454 8 4 1991-1996 D456000 - F877734 ➃ 18-0418 7.4L 525 SC W/BRAVO 454 8 4 1991-1996 D456000 - F877734 ➄ 18-0418 7.4L 525 SC W/SSM 454 8 4 1991-1996 D456000 - F877734 ➁ 18-0418 7.4L 525 SC W/SSM 454 8 4 1991-1996 D456000 - F877734 ➃ 18-0418 7.4L 525 SC W/SSM 454 8 4 1991-1996 D456000 - F877734 ➄ 18-0418 7.4L 7.4L BRAVO 454 8 4 1988-1997 B771113 - K999999 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 7.4L EFI / 7.4L MIE 454 8 4 1996-1997 F874815 - K999999 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 7.4L MIE W/BW 454 8 4 1988-1992 B788366 - D715493 18-1957-2 18-1957-2 18-1974-1 ❸ 18-0418 18-0897 7.4L 7.4L MIE W/BW 454 8 4 1988-1992 B788366 - D715493 18-1957-2 18-1957-2 18-1970-2 ❹ 18-0418 18-0897 7.4L 7.4L MIE W/BW 454 8 4 1988-1992 B788366 - D715493 18-1957-2 18-1957-2 18-1976-2 ❺ 18-0418 18-0897 7.4L 7.4L MIE W/HURTH 454 8 4 1989-1992 C391564 - D715493 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 7.4L MIE 454 8 4 1992-1997 D715494 - K999999 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 7.4L MPI 454 8 4 1998-2001 L010003 - M024330 18-1957-2 18-1957-2 18-1976-2 18-0418 18-2849-1 7.4L 7.4L MPI / 7.4L MIE 454 8 4 1995-1997 F563052 - K999999 18-1957-2 18-1957-2 18-1976-2 18-0418 18-0897 7.4L 7.4L MPI / 7.4L MIE 454 8 4 1998-2001 L002006 - L674613 18-1957-2 18-1957-2 18-1976-2 18-0418 18-2849-1 I/O — MERCRUISER - Cooling