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OMC Internal Engine Parts

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Parts Selection Guide

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      • Sierra 18-2613 Outdrive Gasket Set Replaces 0508105
        List Price: $4.96
        Starting At: $4.02

        Sierra 18-2613 OMC Cobra Sterndrive Outdrive Gasket Set For Use On All OMC "Clutch Dog" Cobra Sterndrives 1986 - 1993. Not For Use On King Cobra Sterndrives. Kit Includes: (1) 18-2918 Outdrive Gasket (1) 18-2996 Outdrive Seal (2) 18-7153...

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      • Exhaust Manifold Gasket , Mercury - Mercruiser 27-33395
        List Price: $10.70
        Starting At: $8.07

        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 18-2946 Head Gasket Replaces 27-52364
        List Price: $30.29
        Now: $21.20

        Head Gasket for 3.0L Mercruiser, Volvo, OMC Replaces: Mercruiser OEM 27-52364, 27-810841, F15000204 OMC and Volvo OEM 3853336, 908611, 913274, 914814 Chriscraft OEM 16.50-00204 Johnson/Evinrude Outboard 908611, 0914812, 3853336 Mallory 9-63700 ...

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      • Sierra 18-7145 O-Ring Replaces 25-64068
        List Price: $0.98
        Starting At: $0.74

        Sierra 18-7145 O-Ring Sierra high-quality engine parts are designed to meet OEM specifications. I.D.: 0.250" Width: 0.100" Interchangeable with: GLM 81080 Johnson/Evinrude Outboard 333572 Mallory 9-76500 Mercruiser Stern...

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      • Sierra 18-3876 Head Gasket Replaces 27-75611001
        List Price: $42.22
        Starting At: $29.55

        Sierra 18-3876 Head Gasket for 5.0 & 5.7L OMC, Volvo, Mercruiser Sierra high-quality engine parts are designed to meet OEM specifications. Fits MCM/MIE GM V-8 (283, 305, 327, 350 & 377 cid) engines. Fits: 305 (5.0L)/350 (5.7L) CID...

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      • Sierra 18-3879 Head Gasket Replaces 27-879150140
        List Price: $42.52
        Starting At: $29.77

        Sierra 18-3879 Head Gasket Sierra replacement head gasket for Mercruiser Stern Drives, OMC Stern Drives, and Volvo Penta engines. Fits: GM 262 (4.3L) CID Engines Interchangeable with: Crusader 33408 GLM 36100 Johnson/Evinrude...

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      • Sierra 18-2673 Upper Unit Seal Kit Replaces 0987603
        List Price: $55.27
        Starting At: $38.69

        Sierra 18-2673 OMC Cobra Upper Unit Seal Kit Sierra replacement engine parts are designed to meet OEM specifications. For Use On All Cobras (1986-89). Interchangeable with: GLM 87654 Johnson/Evinrude Outboard 984459 986364 987603 OMC...

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      • Sierra 18-3880 Head Gasket
        List Price: $70.18
        Starting At: $49.13

        Head Gasket for 2.5 & 3.0L GM Engines - Special Order Item est. 10 days For GM 153 (2.5L), (3.0L) CID Engines Replaces: Mallory 9-63704 Mercury 27-34273 1, 27-52364 OMC 0311210 Felpro 17000 GLM 36130 Redline RL3880 Volvo 3853336

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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 18-1211 Rear Main Seal Replaces 26-814622
        List Price: $61.81
        Starting At: $43.27

        Sierra 18-1211 Two Piece Rear Main Seal for Mercruiser, OMC, Volvo Sierra two piece rear main seal for Most GM Based Marine Engines. For 120/2.5L (s/n 2786857 & up), 140/3.0L & LX (s/n 6229718 & up) For 150/160/165/200 (I/L-6) (s/n...

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      • Sierra 18-4369 Exhaust Manifold Gasket Set
        List Price: $17.71
        Starting At: $12.40

        Sierra 18-4369 OMC Exhaust Manifold Gasket Set Sierra high-quality engine parts are designed to meet OEM specifications. For 2.5L (1985-86) and 3.0L (1985-88) engines. Interchangeable with: GLM 39770 Mallory 9-61450

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      • Sierra 18-3887 Head Gasket Replaces 27-879150141
        List Price: $64.82
        Starting At: $45.37

        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 18-2860 Manifold End Cap Gasket
        List Price: $4.05
        Starting At: $3.61

        Sierra 18-2860 Manifold End Cap Gasket for OMC Sierra high-quality engine parts are designed to meet OEM specifications. For use on OMC Stern Drives. Interchangeable with: Barr OMC47311130 GLM 33340 OMC Stern Drive 311130

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      • Sierra 18-3881 Head Gasket
        List Price: $69.43
        Starting At: $48.60

        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 18-1231 Intake Gasket
        List Price: $62.51
        Starting At: $43.76

        Sierra 18-1231 Intake Gasket Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drives, OMC Stern Drives, and Volvo Penta engines. Fits MCM 450, 500, 500 Bulldog, 525SC, 600SC & 800SC (1991 &...

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      • Sierra 18-0465 Intake Manifold Gasket Set
        List Price: $45.32
        Starting At: $34.44

        Intake Manifold Gasket Set for GM 7.4L - Special Order est. 10 Days Fits  GM 454 CID Engines, 325, 330, 340, 350 HP and 454 Magnums, 7.4L Replaces: Crusader 31134 Mercury 27-8M0050224 Felpro 17340 Aqua Power 535 GLM 39170 Mallory 9-61201 OMC 0508726...

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      • Sierra 18-1316 Main Bearing
        List Price: $145.56
        Starting At: $101.89

        .010 Over Main Bearing for 2.5/3.0L Mercruiser, OMC, Volvo  - Special Order est. 10 Days Fits: 2.5L/153 CID 3.0L/181 CID Replaces: Mercury 23-818471001 Redline RL1316

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      OMC Sterndrive Gaskets and Seals are here and in stock.