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Yamaha Outboard Internal Engine Parts

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Parts Selection Guide

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      • Sierra 18-3832 Head Gasket
        List Price: $35.99
        Starting At: $23.95

        Sierra 18-3832 Head Gasket Sierra high-quality replacement head gasket for Yamaha Outboards. Interchangeable with: GLM 34960 Mallory 9-63959 Yamaha...

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      • Sierra 18-3891 Head Gasket
        List Price: $61.99
        Starting At: $43.49

        Head Gasket - Special Order est. 10 Days

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      • Sierra 18-3934 Piston Rings
        List Price: $54.49
        Starting At: $37.99

        Piston Rings - Special Order est. 10 Days

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      • Sierra 18-3978 Piston Rings
        List Price: $7.86
        Starting At: $2.78

        Sierra 18-3978 Mercury Piston Rings Sierra high-quality engine parts are designed to meet OEM specifications. Interchangeable with: Mercury Marine 39-15322M

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      • Sierra 18-4135 Piston Kit
        List Price: $53.99
        Starting At: $27.16

        Sierra 18-4135 Piston Kit Sierra replacement piston kit for Yamaha Outboards and Mercury Marine engines. Supplied complete with piston, rings, wrist pin, and circlips. Size: Standard Includes (1) 18-3976 Piston Rings Interchangeable...

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      • Sierra 18-99060 G Gasket Head
        List Price: $57.99
        Starting At: $30.07

        Head Gasket Set 40-75HP   HP Year Head Gasket Letter 40 1984-1988 18-3830 H 40 1989-1991 18-3830 H 40 1992-1994 18-3830 H 40 1995-2005 18-99060 I C40 2 CYL 1991 18-3892 J C40 2 CYL 1992-1993 18-3892 J C40 2 CYL 1994-1997 18-3892 J...

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      • Sierra 18-3805 Head Gasket
        List Price: $44.99
        Starting At: $31.49

        Head Gasket - Special Order est. 10 Days

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      • Sierra 18-4141 Piston Kit
        List Price: $115.49
        Starting At: $71.95

        Sierra 18-4141 Piston Kit Sierra high-quality replacement Standard Size Piston Kit for Yamaha Outboards. Includes 18-3960 Piston Rings Interchangeable with: Mallory 9-53810 Wiseco 3030PS 3130PS Yamaha...

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      • Sierra 18-4080 Piston Kit
        List Price: $110.99
        Starting At: $76.35

        Piston Kit - Special Order est. 10 Days

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      • Sierra 18-99094 G Gasket Head
        List Price: $146.99
        Starting At: $83.26

        Head Gasket Set 40-75HP   HP Year Head Gasket Letter 40 1984-1988 18-3830 H 40 1989-1991 18-3830 H 40 1992-1994 18-3830 H 40 1995-2005 18-99060 I C40 2 CYL 1991 18-3892 J C40 2 CYL 1992-1993 18-3892 J C40 2 CYL 1994-1997 18-3892 J...

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      • Sierra 18-3831 Head Gasket
        List Price: $44.99
        Starting At: $30.75

        Head Gasket - Special Order est. 10 Days

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      • Sierra 18-4077 Rod Bearing
        List Price: $98.49
        Starting At: $49.71

        Rod Bearing - Special Order est. 10 Days

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      • List Price: $181.99
        Starting At: $91.75

        Sierra 18-4128 Piston Kit Sierra replacement piston kit for Yamaha Outboards. Port Size: Standard Kit Contains: (1) 18-3934 Piston Rings Interchangeable with: Mallory 9-53820 Wiseco 3016PS 3116PS Yamaha...

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      • Sierra 18-4133 Piston Kit
        List Price: $50.49
        Starting At: $45.99

        Piston Kit - Special Order est. 10 Days

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      • Sierra 18-4142 Piston Kit
        List Price: $112.49
        Starting At: $56.79

        Sierra 18-4142 Yamaha Piston Kit Sierra high-quality engine parts are designed to meet OEM specifications. For use on Yamaha Outboard engines. Includes: 18-3961 Piston Rings Interchangeable...

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      • Sierra 18-99175 Powerhead Gasket Kit
        List Price: $99.49
        Starting At: $66.14

        Powerhead Gasket Set 6-30HP   HP Year Powerhead Gasket Set Letter 6 1988-1996 18-99117 A 8 1984-1996 18-99117 A 9.9 1984-1987 - - 9.9 1988-1991 - - 9.9 1992-1993 - - 9.9 1994-1995 - - 9.9 1996 18-99175 B 9.9 1997-2000 18-99175...

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      Yamaha Outboard Gaskets and Seals