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      OMC Exhaust Manifolds Product Listings

      • Sierra 18-4264 Pipe Plug
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        $5.29
        $4.69

        Sierra 18-4264 Pipe Plug Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drives and Mercury Marine engines. Using Pipe Sealant with Teflon is recommended for use on plug threads. Thread Size:...

      • Sierra 18-2850-1 Manifold End Cap Gasket Replaces 0908935
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        $8.29
        $6.49

        Sierra 18-2850-1 Manifold End Cap Gasket Replaces 0908935 Sierra 18-2850-1 Manifold End Cap Gasket is a replacement part for OMC Stern Drive. Sierra aftermarket parts are met to meet or exceed OEM requirements. Used with Manifold 18-1904...

      • Exhaust Manifold Gasket Set, Mercury - Mercruiser 27-33395A-2
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        $48.49
        $42.49

        Exhaust Manifold Gasket Set, Mercury - Mercruiser 27-33395A-2 For GM 305, 327, 350 cid engines with end outlet exhaust manifolds. Replaces: Aqua...

      • Sierra 18-8534 Exhaust Elbow Mounting Kit
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        $20.69
        $14.89

        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...

      • EMP 26-01644 OMC Cap
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        $12.08
        $10.07

        EMP 26-01644 OMC Cap This cap is intended for use with OMC & Cobra engines and meets all OEM requirements. Cap Application: For OMC, Stringer, Cobra & Cobra SX 5.0-8.2L V8 185-280HP...

      • Sierra 18-2861-1 Manifold End Cap Gasket Replaces 0311121
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        $11.49
        $10.49

        Sierra 18-2861-1 Manifold End Cap Gasket for Older OMC 4 Cyl Sierra replacement manifold end cap gasket for OMC Stern Drives. For: 1977 140 HP 1974-76 140 HP 1973 100,120,140 HP 1973 165 HP 1972 100,120 HP 1965-71 120 HP Interchangeable...

      • Sierra 18-2860 Manifold End Cap Gasket
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        $1.49
        $0.84

        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

      • CLEARANCE
        Sierra 18-4257 Pipe Plug
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        $2.39
        $1.59

        Sierra 18-4257 Pipe Plug Sierra high-quality replacement pipe plug for use.  Material: Black Steel Thread Size: 1/4" Note: Pipe sealant with Teflon is recommended for use on plug threads. Use with: 56507 Loctite Pipe Sealant (PST 6ml w/...

      • Sierra 18-1876 Riser
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        $92.29
        $66.49

        Sierra 18-1876 Riser Sierra replacement riser fits 170 (1974), 175 (1975-76), 190 (1974-76), 235 (1975-76). Use with: 18-1904 Manifold 18-2850 Manifold End Cap Gasket Interchangeable with: OMC Stern Drives 980617 Special Order Item

      • (365) GASKET (Use 18-2883-1)
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        $2.99
        $2.49

        Sierra 18-2883 Manifold End Cap Gasket  

      • Sierra 18-4256 Pipe Plug
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        $2.79
        $2.39

        Sierra 18-4256 Pipe Plug 56507 Pipe Sealant with Teflon is recommended for use on plug threads

      • Sierra 18-8216 Brass Hose Fitting
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        $37.19
        $26.79

        Sierra 18-8216 Brass Hose Fitting Sierra replacement brass hose fitting for OMC and Chrysler engines. Fits: Chrysler Small Block V8 (318-360ci), Big block V8 (383-440) Fits: OMC - In-Line 6 cylinders Material: Brass Thread Size: 3/4" - 14 NPT x 1"...

      • Sierra 18-0114-1 Manifold End Gasket
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        $8.89
        $7.79

        Manifold End Gasket Replaces: OMC 0907761, 0778119 Barr OMC47-907761 GLM 32580 Mercury 878970 Redline RL0114

      • Sierra 18-2883-1 Manifold End Cap Gasket
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        $3.09
        $2.69

        Sierra 18-2883-1 Manifold End Cap Gasket Sierra replacement manifold end cap gasket for OMC Stern Drives. Sierra replacement parts are manufactured to meet or exceed OEM requirements. Interchangeable with: Barr OMC47907775 GLM 32990 OMC...

      OMC Sterndrive Exhaust Manifolds are in stock now.