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Parts Selection Guide

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      OMC Exhaust Manifolds

      • Sierra 18-4218 Drain Tap Replaces 22-16951Q1
        $12.99
        $9.99

        Sierra 18-4218 Drain Tap for Mercruiser, Volvo, OMC Sierra high-quality engine parts are designed to meet OEM specifications. Used with most OEM Manifolds. Fits Mercruiser cylinder blocks & exhaust manifolds Material: Brass Size: 1/4"...

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      • Exhaust Manifold Gasket , Mercury - Mercruiser 27-33395
        $11.99
        $9.99

        Mercury - Mercruiser 27-33395 Exhaust Manifold Gasket 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
        $13.49
        $10.49

        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
        $12.49
        $9.49

        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 18-1998-1 Exhaust Manifold
        $403.99
        $282.99

        Sierra 18-1998-1 Exhaust Manifold - Port & Starboard for Ford V8 Engines Fits Port and Starboard Sides. Universal Center Riser Manifold. Fits: Crusader 302 and 351 CID Engines Interceptor 221, 260 and 289 CID Engines Commander, Mercury, OMC,...

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      • Sierra 18-0418 Exhaust Manifold Mounting Gasket Replaces 27-46820
        $20.49
        $14.49

        Sierra 18-0418 Exhaust Manifold Mounting Gasket Sierra high-quality engine parts are designed to meet OEM specifications. Fits MCM/MIE GM V-8 (454, 482, 496, 502 & 504 CID) engines. Fits Volvo 7.4L, GL, GI, GSI, and 8.2L, GL, GI,...

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      • Sierra 18-1997-1 Exhaust Manifold
        $381.49
        $266.99

        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...

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      • Sierra 18-0603 Exhaust Manifold Gasket Set
        $40.49
        $28.49

        Sierra 18-0603 Exhaust Manifold Gasket Set for Mercruiser, Volvo, OMC Sierra high-quality engine parts are designed to meet OEM specifications. For Ford 302/351 CID Engines and Indmar Inboard V8 Engines. Use with 18-1998-1 Manifold Set...

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      • Sierra 18-4009 Manifold End Plate Replaces 60252A2
        $76.49
        $53.49

        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 18-1999 Manifold Elbow
        $265.99
        $186.49

        Sierra 18-1999 Exhaust Elbow Sierra cast iron replacement exhaust elbow; fits 3" I.D. exhaust hose. Replaces: Barr 200082,20-0082 Mallory 9-40810 GLM 56110 Osco 992,CRR-1 Use with...

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      • Sierra 18-1903 Exhaust Manifold Replaces 0912442
        $475.49
        $332.99

        Sierra 18-1903 OMC Port Exhaust Manifold Fits most GM V8 Small Blocks with End Riser. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. Use with: 18-1921 Elbow 18-2902 Exhaust Manifold Gasket 18-2902-9 Exhaust...

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      • Sierra 18-1907 Riser
        $261.49
        $182.99

        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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      OMC Sterndrive Exhaust Manifolds are in stock now.