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Mercury Outboard Piston Kits

      • Sierra 18-3966 Piston Rings
        List Price: $43.20
        Starting At: $30.24

        Sierra 18-3966 Mercury Piston Rings Sierra high-quality piston rings for Mercury Marine engines. Sierra engine parts are backed by Sierra's unmatched manufacturer's warranty. Bore Size: 2.565 / Standard Interchangeable...

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      • List Price: $37.54
        Starting At: $26.28

        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 18-4623 Piston Kit
        List Price: $184.89
        Starting At: $129.42

        Sierra 18-4623 Piston Kit Sierra replacement piston kit for Mercury Marine engines. Bore Size: 3.375 / Standard Interchangeable with: GLM 14660 Mallory 9-53246 Mercury Marine 777-815965T4 777-815965A4

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      • Sierra 18-3918 Piston Rings
        List Price: $50.28
        Starting At: $35.20

        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 18-3916 Piston Rings Replaces 39-78811A12
        List Price: $12.95
        Starting At: $9.07

        Sierra Piston Ring Kit for Mercury/Mariner Engines 3 Ring, Low Dome Bore Size 2.890 / .015 Fits: Mercury and Mariner 35-140 hp, 2-6 Cyl Replaces: OEM - 39-78811A12 Mallory - 9-54219 Pro Marine - 3915 Redline - RL3916 NOTE: 3 ring low dome NLA, 2 ring...

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