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OMC Exhaust Manifolds

      • Sierra 18-2833 Exhaust Manifold Elbow Gasket Replaces 27-997772
        List Price: $3.61
        Now: $2.74

        Sierra 18-2833 Mercruiser Exhaust Elbow Gasket Sierra high-quality engine parts are designed to meet OEM specifications.  Fits MCM 120 (1993 & newer), 140/3.0L, 470, 165 in-line 6 cyl., GM V-8 small block (1982 & older) Fits Ford...

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      • Exhaust Manifold Gasket , Mercury - Mercruiser 27-33395
        List Price: $9.52
        Starting At: $7.93

        Exhaust Manifold Gasket , Mercury - Mercruiser 27-33395 Fits MCM/MIE GM V-8 (283, 305, 350,  and 377 CID) engines Replaces: GLM 31100 Mallory 9-61401 Felpro 17420 OMC 3852468 Redline RL0872 Sierra 18-0872

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      • Sierra 18-0549 Plug Off Cap Replaces 3852476
        List Price: $11.02
        Starting At: $8.38

        Sierra 18-0549 Plug Off Cap 1" I.D. Sierra high quality engine parts are designed to meet OEM specifications. For V8 Stern Drives and Inboards 1977 - present. Interchangeable with: GLM 22290 Johnson/Evinrude...

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      • Sierra 18-0550 Plug Off Cap Replaces 0764799
        List Price: $10.51
        Starting At: $7.99

        Sierra 18-0550 OMC Exhaust Manifold Plug Off Cap 1.25" I.D. Sierra high-quality engine parts are designed to meet OEM specifications. For V8 Stern Drives and Inboards 1977 - present. I.D.: 1-1/4" Interchangeable...

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      • Sierra 18-1997-1 Exhaust Manifold
        List Price: $281.39
        Starting At: $196.98

        Universal Exhaust Manifold with Mounting Package by Sierra For Port & Starboard Sides. Universal Center Riser Manifold. Fits: Chriscraft 283, 302, 307, and 350 CID Engines. Crusader 283 and 327 CID Engines thru 1964; 305, 307 and 350 CID Engines 1965...

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      • Sierra 18-4263 Pipe Plug Replaces 22-32802
        List Price: $4.19
        Starting At: $3.19

        Sierra 18-4263 Pipe Plug 1/8"-27 NPT Sierra replacement pipe plug. Thread Size: 1/8" - 27 NPT Material:...

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      • Sierra 18-1998-1 Exhaust Manifold
        List Price: $292.14
        Now: $204.49

        Exhaust Manifold - Port & Starboard for Ford V8 Engines by Sierra Fits Port and Starboard Sides. Universal Center Riser Manifold. Use With: Exhaust Manifold Gasket: 18-0183 Exhaust Manifold Gasket Set: 18-0603 Exhaust Manifold Mounting Kit: 18-8538...

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      • Sierra 18-0604 Exhaust Manifold Gasket Set
        List Price: $27.63
        Now: $19.34

        Barr Exhaust Manifold Gasket Set by Sierra For GM 305/350 CID Engines and Barr Exhaust Systems. Use with Manifold 18-1997-1.

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      • Sierra 18-4009 Manifold End Plate Replaces 60252A2
        List Price: $85.63
        Starting At: $59.94

        Sierra 18-4009 Manifold End Plate for Mercruiser & OMC Sterndrives Sierra high-quality engine parts are designed to meet OEM specifications. For Use With: 18-1950-1 Manifold 18-1951-1 Manifold 18-1958-1 Manifold 18-1960-1 Manifold 18-1962-1...

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      • Sierra 18-1902 Manifold Replaces 0912441
        List Price: $295.58
        Starting At: $206.91

        Sierra 18-1902 OMC Starboard Exhaust Manifold Sierra high-quality engine parts are designed to meet OEM specifications. Fits most GM Small Block (B8) 305-350 cu.in. (1979-1989) (Starboard). Use With: 18-2949 Exhaust Manifold Gasket 18-8502 Exhaust...

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      • Sierra 18-1986-1 Exhaust Manifold Replaces 3857723
        List Price: $354.00
        Starting At: $247.80

        Exhaust Manifold for Volvo, OMC For 5.0L & 5.7L GM Cast Iron (New Style) Engines. Used on both Port and Starboard sides. Replaces: OMC & Volvo 3857723, 3847501, 3857579, 3852374-2,3852374 Mallory 9-40902 Barr OMC-1-914035 GLM 51430 ...

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      • Sierra 18-1992-1 Manifold Elbow Adapter
        List Price: $83.76
        Now: $58.63

        Sierra 18-1992-1 Manifold Elbow Adapter Sierra high-quality engine parts are designed to meet OEM specifications. For 3" I.D. Exhaust Hose. 80° Interchangeable with: Barr 200087P Mallory 9-40120

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      • Sierra 18-1907 Riser
        List Price: $191.27
        Starting At: $133.89

        Sierra 18-1907 Riser for Ford Small Block V-8 Sierra Cast Iron Riser for Ford Small Block V-8 302-351 cu. in. Use with: 18-1997-1: Manifold 18-1998-1: Manifold 18-4364: Exhaust Elbow Mounting Package (Open) 18-8535: Exhaust Elbow Mounting Kit...

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      • 27-99757
        List Price: $9.99
        Starting At: $8.36

        Exhaust Manifold Gasket, Mercury - Mercruiser 27-99757 Fits GM V-6 engines Replaces: GLM 32170 Mallory 9-61421 OMC 3853412 Sierra 18-2909 Volvo 3853412

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      • Sierra 18-8534 Exhaust Elbow Mounting Kit
        List Price: $15.77
        Now: $11.04

        Sierra 18-8534 Exhaust Elbow Mounting Kit Sierra replacement exhaust elbow mounting kit for use on OMC GM Small Block engines. OMC GM Small Block V8 305-350 cu. in. (1979-1989) & multi application for Ford & GM risers Use with: 18-1921...

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      • Sierra 18-0183-1 Exhaust Manifold Gasket
        List Price: $9.53
        Now: $7.24

        Sierra 18-0183-1 Exhaust Manifold Gasket for Mercruiser, OMC Sierra Exhaust Manifold Gasket for use on Mercruiser and OMC Stern Drives. Fits MCM/MIE Ford V-8 engines Use With: 18-1996 Manifold 18-1998-1 Manifold 18-1962-1...

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      • Sierra 18-4258 Pipe Plug
        List Price: $4.61
        Starting At: $3.51

        Sierra 18-4258 Mercruiser Pipe Plug Sierra stainless steel pipe plug with square drive. Note: Pipe sealant with Teflon is recommended for use on plug threads. Thread Size: 3/4" - 14 NPT Use With: 18-1949 Manifold Spacer 18-1984 Manifold...

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      OMC Sterndrive Exhaust Manifolds are in stock now.