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Mercury Outboard Piston Kits

      • Sierra 18-3966 Piston Rings
        List Price: $42.49
        Starting At: $21.27

        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: $37.49
        Starting At: $24.53

        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 18-3902 Piston Rings
        List Price: $37.49
        Starting At: $25.99

        Sierra 18-3902 Mercury Piston Rings Sierra high-quality marine parts are designed to meet OEM specifications. Bore Size: 2.875 / STD For 3 ring pistons Interchangeable with: Mallory 9-54217 Mercury Marine 39-78816A12 39-45155A12

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      • Sierra 18-4620 Piston Kit
        List Price: $143.99
        Starting At: $103.95

        Sierra 18-4620 Piston Kit Sierra replacement piston kit for Mercury Marine engines. Bore Size: 2.565 / Standard Interchangeable with: Mallory 9-53200 Mercury Marine 780-9229A7 743-5172A6 743-3193A2 743-3193A4

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      • Sierra 18-4622 Piston Kit
        List Price: $202.99
        Starting At: $121.45

        Sierra 18-4622 Mercury Piston Kit Sierra high-quality engine parts are designed to meet OEM specifications. Bore Size: 2.595/.030 Interchangeable with: Mallory 9-53202 Mercury Marine 780-9229A11 743-7716A2

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      • Sierra 18-4628 Piston Kit
        List Price: $167.99
        Starting At: $117.49

        Sierra 18-4628 Mercury Piston Kit Sierra high-quality engine parts are designed to meet OEM specifications. Bore Size: 3.405/.030 Interchangeable with: GLM 14490 Mallory 9-53252 Mercury Marine 2704-821896A4

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      • Sierra 18-3916 Piston Rings Replaces 39-78811A12
        List Price: $27.99
        Starting At: $14.06

        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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      • Sierra 18-3918 Piston Rings
        List Price: $50.49
        Starting At: $30.02

        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 18-3919 Piston Rings
        List Price: $45.49
        Starting At: $31.99

        Piston Rings - Special Order est. 10 Days

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      • Sierra 18-3920 Piston Rings
        List Price: $45.49
        Starting At: $31.99

        Piston Rings - Special Order est. 10 Days

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      • Sierra 18-3968 Piston Rings
        List Price: $67.99
        Starting At: $33.13

        Piston Rings - Special Order est. 10 Days

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      • Sierra 18-4017 Piston Kit
        List Price: $215.49
        Starting At: $150.99

        Piston Kit - Special Order est. 10 Days

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      • Sierra 18-4018 Piston Kit
        List Price: $153.99
        Starting At: $107.49

        Piston Kit - Special Order est. 10 Days

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      • Sierra 18-4019 Piston Rings
        List Price: $57.99
        Starting At: $42.08

        Piston Rings - Special Order est. 10 Days

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      • Sierra 18-4624 Piston Kit
        List Price: $185.99
        Starting At: $129.99

        Piston Kit - Special Order est. 10 Days

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      • Sierra 18-4625 Piston Kit
        List Price: $194.49
        Starting At: $121.45

        Piston Kit - Special Order est. 10 Days

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