Mercury Outboard 3 Ring Inline Pistons

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Parts Selection Guide

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Prop Selection Guide

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      • Sierra 18-3982 Piston Rings Replaces 39-822321A12
        $31.99

        Sierra 18-3982 Standard Piston Rings For Mercury Outboards Sierra high-quality engine parts are designed to meet OEM specifications. 18-3982 Piston Rings are for Mercury and Mariner Crossflow and Inline Outboard engines Bore Size: 3.500 /...

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      • Sierra 18-3918 Piston Rings
        $30.49

        Sierra 18-3918 Mercury Marine Piston Rings Sierra high-quality engine parts are designed to meet OEM specifications. Bore Size: 2.875 / Standard For 2 ring pistons Interchangeable with: GLM 14210 Mercury...

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      • Sierra 18-3979 Piston Rings
        $26.99

        Sierra 18-3979 Piston Rings Sierra replacement piston rings for Mercury Marine Outboards. Bore Size: 3.375 / Standard Interchangeable with: GLM 14910 Mallory 9-54229 Mercury Marine 39-96170A12

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      • Sierra 18-4014 Piston Kit
        $84.99

        Sierra 18-4014 Piston Kit Sierra replacement piston kit for Mercury Marine engines. Interchangeable with: GLM 14155 Mallory 9-53240 Mercury Marine 765-7446A11

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      • Sierra 18-4019 Piston Rings
        $48.99

        Sierra 18-4019 Mercury Piston Rings Sierra replacement piston rings for Mercury Marine engines. Bore Size: 2.875 Standard Interchangeable with: Mercury (3) of Sierra 18-4019 = (1) Mercury 39-19721A6 Mallory 9-54208

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