OMC Internal Engine Parts

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Parts Selection Guide

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Prop Selection Guide

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      • Sierra 18-3878 Head Gasket Replaces 27-13709
        $50.49
        $35.49

        Sierra 18-3878 Head Gasket for OMC, Mercruiser, and Chrysler Sierra replacement engine parts are designed to meet OEM specifications. Sierra 18-3878 Head Gasket fits MCM 3.7L engines (1976-1989). For 460 Ford Interchangeable with: Chrysler...

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      • Sierra 18-2671 Lower Unit Seal Kit Replaces 0985612
        $46.99
        $32.99

        Sierra 18-2671 OMC Cobra Lower Unit Seal Kit Sierra high-quality engine parts are designed to meet OEM specifications. For Use On All 4 Cyl Cobras(1986-89). Kit Includes: (2) 18-0166 Grommet (1) 18-0190 Wiper Gasket (1) 18-0880 Shift Cover...

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      • Sierra 18-0664 Valve Cover Gasket
        $31.49
        $21.99

        Valve Cover Gasket for 5.0/5.7L GM Engines - Special Order est. 10 Days For GM 305/350, 5.0 & 5.7L Replaces: Crusader 7231330 Mallory 9-61305 Mercury 27-17467 OMC 3852687 Volvo 3852687 Aqua Power 1219 GLM 30357

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      • Sierra 18-1308 Rod Bearing Replaces 23-85701
        $14.49
        $10.99

        Sierra 18-1308 Standard Rod Bearing for Mercruiser Stern Drives Sierra high-quality engine parts are designed to meet OEM specifications. Standard size Interchangeable with: Mercruiser Stern...

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      • Sierra 18-2845 Valve Cover Gasket Replaces 27-11999
        $29.99
        $22.49

        Valve Cover Gasket for 5.0 & 5.7L Mercruiser, Volvo, OMC For V-8 Engines (305/350)CID 5.0,5.7L Replaces: Chris Craft - 16.11-01236 Mercury - 27-11999 OMC - 0912965 Mallory - 9-61300 Crusader - 91351 Pro Marine - 17930 Redline - RL2845  

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      • Sierra 18-1238 Intake Gasket Set Replaces 27-11977
        $48.49
        $33.99

        Sierra 18-1238 Intake Manifold Gasket Set (Pair of 2) for 4.3L Mercruiser, OMC, Volvo Engines Sierra replacement engine parts are designed to meet OEM specifications. Fits MCM 4.3L/LX Gen II (1993-1996) Interchangeable...

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      • Sierra 18-2815 Push Rod Cover Gasket
        $30.49
        $22.99

        Sierra 18-2815 Push Rod Cover Gasket for GM 3.0L Sierra high-quality engine parts are backed by an unmatched Sierra manufacturer's warranty. For use with Mercruiser Stern Drives, OMC Stern Drives, and Volvo Penta engines. Fits MCM 120/140 (4 cyl.)...

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      • CLEARANCE
        Sierra 18-4024 Valve Stem Seal
        $2.49
        $1.99

        Sierra 18-4024 Intake Valve Stem Seal for 4.3L/5.0L/5.7L Sierra high-quality engine parts are designed to meet OEM specifications. For Mercruiser, OMC, and Volvo Penta applications. For: Chevy 4.3L/5.0L/5.7L Interchangeable...

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      • Sierra 18-3887 Head Gasket Replaces 27-879150141
        $93.49
        $65.49

        Sierra 18-3887 Head Gasket for 7.4L Crusader, Mercruiser, OMC, and Volvo Engines Sierra high-quality engine parts are designed to meet OEM specifications.  For 7.4L 454 CID Gen V and VI (1992 & up) Interchangeable...

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      • Sierra 18-1211 Rear Main Seal Replaces 26-814622
        $75.49
        $52.99

        Sierra 18-1211 Rear Main Seal Replaces MerCruiser 26-814622 Sierra two piece rear main seal for Most GM Based Marine Engines. Application Info: Fits 120/2.5L (s/n 2786857 & up), 140/3.0L & LX (s/n 6229718 & up)Fits 150/160/165/200 (I/L-6)...

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      • Sierra 18-3881 Head Gasket
        $83.99
        $58.49

        Sierra 18-3881 Head Gasket for 4.1L GM 6 cyl Engines Sierra high-quality engine parts are designed to meet OEM specifications. Fits Mercruiser and OMC Stern Drives. For GM 250 (4.1L) CID (6 cyl) engines Interchangeable...

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      • Sierra 18-0887 Timing Cover Gasket
        $5.99
        $3.99

        Sierra 18-0887 Timing Cover Gasket Sierra replacement timing cover gasket for 4 & 6 cylinder engines. Fits MCM 120/2.5L, 140/3.0L/LX & 160/165 (6 cylinder) (1963 & up) Interchangeable...

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      OMC Sterndrive Gaskets and Seals are here and in stock.