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Parts Selection Guide

Find the parts you need

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Prop Selection Guide

Find the right prop for your boat

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      Mercury Outboard 3 Ring Inline Pistons

      • Sierra 18-4622 Piston Kit
        $55.99
        $39.49

        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

        Add to Cart
      • Sierra 18-3982 Piston Rings Replaces 39-822321A12
        $45.99
        $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 18-3916 Piston Rings Replaces 39-78811A12
        $10.99
        $7.49

        Sierra 18-3916 Piston Ring Kit for Mercury/Mariner Engines Sierra 18-3916 is a replacement set of piston rings for Mercury and Mariner 35-140 HP, 2-6 Cylinder engines. Bore Size: 2.890 / .015 O.S. For: 3 ring pistons Interchangeable...

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      • Sierra 18-3918 Piston Rings
        $49.99
        $29.49

        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
        $37.99
        $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
        $92.99
        $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 18-4628 Piston Kit
        $65.49
        $45.99

        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

        Add to Cart
      • Sierra 18-4018 Piston Kit
        $60.99
        $42.49

        Sierra 18-4018 Piston Kit Sierra replacement piston kit for Mercury Marine Outboards. Bore Size: 2.985 / .030 O.S. Interchangeable with: Mallory 9-53210 Mercury Marine 783-9613A3 783-9613T3

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      • Sierra 18-4019 Piston Rings
        $69.99
        $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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      Mercury OEM Engine Parts Finder