177 Fulford Dr.
Harkers Island, NC 28531
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Gasket, Thermostat Housing Top Cover for Mercruiser and Barr Style

  • Part #: OSC41812

$5.95

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Gasket, top cover to base for center riser style manifolds.
Replaces Mercruiser # 27-41812; Barr # MC47-27-41812; Sierra # 18-2554; SMI #27812.
Use with Osco # MC552-SB or Osco # MC552-BB thermostat bases.Genuine  Osco  Parts


SIE18-2554
Brand Model Year HP Serial # Notes
Mercruiser Stern Drive 185 2 BBL. GM 1985
Mercruiser Stern Drive 205 4 BBL. GM 1985
Mercruiser Stern Drive 185 2 BBL. GM 1986
Mercruiser Stern Drive 205 4 BBL. GM 1986
Mercruiser Stern Drive 454 MAG. ALPHA GM 1986
Mercruiser Stern Drive 454 MAG. ALPHA GM 1987
Mercruiser Stern Drive 454 MAG. ALPHA GM 1988
Mercruiser Stern Drive 350 MAG ALPHA GM 1986
Mercruiser Stern Drive 350 MAG ALPHA GM 1987
Mercruiser Stern Drive 230 MIE 4 BBL. GM 1988 230
Mercruiser Stern Drive 5.0L MIE 4 BBL GM 1988 230
Mercruiser Stern Drive 230 MIE 4 BBL. GM 1989 230
Mercruiser Stern Drive 5.0L MIE 4 BBL GM 1989 230
Mercruiser Stern Drive 230 MIE 4 BBL. GM 1991 230
Mercruiser Stern Drive 5.0L MIE 4 BBL GM 1991 230
Mercruiser Stern Drive 230 MIE 4 BBL. M 1992 230
Mercruiser Stern Drive 5.0L MIE 4 BBL GM 1992 230
Mercruiser Stern Drive 260 GM 1987
Mercruiser Stern Drive 230 4 BBL. GM 1987
Mercruiser Stern Drive 260 4 BBL. GM 1987
Mercruiser Stern Drive 200 2 BBL. GM 1987
Mercruiser Stern Drive 350 MAG ALPHA GM 1987
Mercruiser Stern Drive 350 MAG ALPHA GM 1988
Mercruiser Stern Drive 5.7L GM 1988
Mercruiser Stern Drive 350 MAG ALPHA GM 1989
Mercruiser Stern Drive 5.7L GM 1989
Mercruiser Stern Drive 350 MAG ALPHA GM 1990
Mercruiser Stern Drive 5.7L GM 1990
Mercruiser Stern Drive 350 MAG ALPHA GM 1991
Mercruiser Stern Drive 5.7L GM 1991
Mercruiser Stern Drive 350 MAG ALPHA GM 1992
Mercruiser Stern Drive 5.7L GM 1992
Mercruiser Stern Drive 350 MAG ALPHA GM 1993
Mercruiser Stern Drive 5.7L GM 1993
Mercruiser Stern Drive 350 MAG ALPHA GM 1994
Mercruiser Stern Drive 5.7L GM 1994
Mercruiser Stern Drive 350 MAG ALPHA GM 1995
Mercruiser Stern Drive 5.7L GM 1995
Mercruiser Stern Drive 175 2 BBL. GM 1987
Mercruiser Stern Drive 205 4 BBL. GM 1987
Mercruiser Stern Drive 454 MAG. BRAVO GM 1988
Mercruiser Stern Drive 454 MAG. BRAVO GM 1989
Mercruiser Stern Drive 454 MAG. BRAVO GM 1990
Mercruiser Stern Drive 454 MAG. BRAVO GM 1991
Mercruiser Stern Drive 454 MAG. BRAVO GM 1992
Mercruiser Stern Drive 7.4L BRAVO GM 454 1988
Mercruiser Stern Drive 7.4L BRAVO GM 454 1989
Mercruiser Stern Drive 7.4L BRAVO GM 454 1990
Mercruiser Stern Drive 7.4L BRAVO GM 454 1991
Mercruiser Stern Drive 4.3L 2 BBL. GM 262 1988
Mercruiser Stern Drive 4.3L 2 BBL. GM 262 1989
Mercruiser Stern Drive 4.3L 2 BBL. GM 262 1990
Mercruiser Stern Drive 4.3L 2 BBL. GM 262 1991
Mercruiser Stern Drive 4.3L 2 BBL. GM 262 1992
Mercruiser Stern Drive 5.0LX 4 BBL. GM 1988
Mercruiser Stern Drive 5.0LX 4 BBL. GM 1989
Mercruiser Stern Drive 5.0LX 4 BBL. GM 1990
Mercruiser Stern Drive 5.0LX 4 BBL. GM 1991
Mercruiser Stern Drive 5.0LX 4 BBL. GM 1992
Mercruiser Stern Drive 5.0LX 4 BBL. GM 1993
Mercruiser Stern Drive 5.0LX 4 BBL. GM 1994
Mercruiser Stern Drive 5.0LX 4 BBL. GM 1995
Mercruiser Stern Drive 5.0L 2 BBL. GM 1988
Mercruiser Stern Drive 5.0L 2 BBL. GM 1989
Mercruiser Stern Drive 5.0L 2 BBL. GM 1990
Mercruiser Stern Drive 5.0L 2 BBL. GM 1991
Mercruiser Stern Drive 5.0L 2 BBL. GM 1992
Mercruiser Stern Drive 5.0L 2 BBL. GM 1993
Mercruiser Stern Drive 5.0L 2 BBL. GM 1994
Mercruiser Stern Drive 5.0L 2 BBL. GM 1995
Mercruiser Stern Drive 4.3LX 4 BBL. GM 1988 205
Mercruiser Stern Drive 4.3LX 4 BBL. GM 1989 205
Mercruiser Stern Drive 4.3LX 4 BBL. GM 1990 205
Mercruiser Stern Drive 4.3LX 4 BBL. GM 1991 205
Mercruiser Stern Drive 4.3LX 4 BBL. GM 1992 205
Mercruiser Stern Drive 5.7L MIE GM 1988 260
Mercruiser Stern Drive 5.7L MIE GM 1989 260
Mercruiser Stern Drive 5.7L MIE GM 1991 260
Mercruiser Stern Drive 5.7L MIE GM 1992 260
Mercruiser Stern Drive 340 MIE GM 1981 340
Mercruiser Stern Drive 340 MIE GM 1982 340
Mercruiser Stern Drive 340 MIE GM 1983 340
Mercruiser Stern Drive 340 MIE GM 1984 340
Mercruiser Stern Drive 340 MIE GM 1985 340
Mercruiser Stern Drive 340 MIE GM 1986 340
Mercruiser Stern Drive 340 MIE GM 1987 340
Mercruiser Stern Drive 230 MIE 4 BBL. GM 1981
Mercruiser Stern Drive 260 MIE GM 1981
Mercruiser Stern Drive 230 MIE 4 BBL. GM 1982
Mercruiser Stern Drive 260 MIE GM 1982
Mercruiser Stern Drive 230 MIE 4 BBL. GM 1983
Mercruiser Stern Drive 260 MIE GM 1983
Mercruiser Stern Drive 230 MIE 4 BBL. GM 1984
Mercruiser Stern Drive 260 MIE GM 1984
Mercruiser Stern Drive 230 MIE 4 BBL. GM 1985
Mercruiser Stern Drive 260 MIE GM 1985
Mercruiser Stern Drive 230 MIE 4 BBL. GM 1986
Mercruiser Stern Drive 260 MIE GM 1986
Mercruiser Stern Drive 228 4 BBL. GM 1982
Mercruiser Stern Drive 260 GM 1982
Mercruiser Stern Drive 260 4 BBL. GM 1982
Mercruiser Stern Drive 228 4 BBL. GM 1983
Mercruiser Stern Drive 260 GM 1983
Mercruiser Stern Drive 260 4 BBL. GM 1983
Mercruiser Stern Drive 898 2 BBL. GM 1983
Mercruiser Stern Drive 228 4 BBL. GM 1984
Mercruiser Stern Drive 260 GM 1984
Mercruiser Stern Drive 260 4 BBL. GM 1984
Mercruiser Stern Drive 898 2 BBL. GM 1984
Mercruiser Stern Drive 200 2 BBL. GM 1985 200
Mercruiser Stern Drive 230 4 BBL. GM 1985
Mercruiser Stern Drive 260 GM 1985
Mercruiser Stern Drive 260 4 BBL. GM 1985
Mercruiser Stern Drive 200 2 BBL. GM 1986 200
Mercruiser Stern Drive 230 4 BBL. GM 1986
Mercruiser Stern Drive 260 GM 1986
Mercruiser Stern Drive 260 4 BBL. GM 1986
Mercruiser Stern Drive 185 4 BBL. GM 1983
Mercruiser Stern Drive 185 4 BBL. GM 1984
Mercruiser Stern Drive 300 TEMPEST GM 1985
Mercruiser Stern Drive 300 TEMPEST GM 1986
Mercruiser Stern Drive 370 TRS GM 454 1986
Mercruiser Stern Drive 370 TRS GM 454 1987
Mercruiser Stern Drive 5.7L SKI GM 1985
Mercruiser Stern Drive 5.7L SKI GM 1986
Mercruiser Stern Drive 5.7L SKI GM 1987
Mercruiser Stern Drive 205 4 BBL. GM 1987
Mercruiser Stern Drive 5.7L COMPETITION SKI GM 350 1987
Mercruiser Stern Drive 5.7L COMPETITION SKI GM 350 1988
Mercruiser Stern Drive 5.7L COMPETITION SKI GM 350 1989
Mercruiser Stern Drive 5.7L COMPETITION SKI GM 350 1990
Mercruiser Stern Drive 5.7L COMPETITION SKI GM 350 1991
Mercruiser Stern Drive 5.7L COMPETITION SKI GM 350 1992
Mercruiser Stern Drive 5.7L COMPETITION SKI GM 350 1993
Mercruiser Stern Drive 5.7L COMPETITION SKI GM 350 1994
Mercruiser Stern Drive 5.7L COMPETITION SKI GM 350 1995
Mercruiser Stern Drive 230 MIE 4 BBL GM 305 1987
Mercruiser Stern Drive 230 MIE 4 BBL GM 305 1988
Mercruiser Stern Drive 230 MIE 4 BBL GM 305 1989
Mercruiser Stern Drive 230 MIE 4 BBL GM 305 1990
Mercruiser Stern Drive 230 MIE 4 BBL GM 305 1991
Mercruiser Stern Drive 230 MIE 4 BBL GM 305 1992
Mercruiser Stern Drive 230 MIE 4 BBL GM 305 1993
Mercruiser Stern Drive 230 MIE 4 BBL GM 305 1994
Mercruiser Stern Drive 230 MIE 4 BBL GM 305 1995
Mercruiser Stern Drive 260 MIE GM 1987
Mercruiser Stern Drive 330 GM 454 1982
Mercruiser Stern Drive 330 GM 454 1983
Mercruiser Stern Drive 330 GM 454 1984
Mercruiser Stern Drive 330 GM 454 1985
Mercruiser Stern Drive 330 GM 454 1986
Mercruiser Stern Drive 330 GM 454 1987
Mercruiser Stern Drive 370 TRS GM 454 1985
Mercruiser Stern Drive 5.0L MIE 4 BBL GM 1987
Mercruiser Stern Drive 5.0L MIE 4 BBL GM 1990
Mercruiser Stern Drive 5.0L MIE 4 BBL GM 1993
Mercruiser Stern Drive 5.0L MIE 4 BBL GM 1994
Mercruiser Stern Drive 5.0L MIE 4 BBL GM 1995
Mercruiser Stern Drive 5.7L MIE GM 1990
Mercruiser Stern Drive 5.7L MIE GM 1993
Mercruiser Stern Drive 7.4L MIE W/B/W 1988
Mercruiser Stern Drive 7.4L MIE W/B/W 1989
Mercruiser Stern Drive 7.4L MIE W/B/W 1990
Mercruiser Stern Drive 7.4L MIE W/B/W 1991
Mercruiser Stern Drive 7.4L MIE W/B/W 1992


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