Inboard Boat Parts

Get the performance and reliability your inboard boat demands with premium replacement parts from WaterSkis.com. Whether you’re maintaining a MasterCraft, Supra, or Moomba boat, we offer a wide selection of genuine and OEM-compatible inboard boat parts to keep your engine, drivetrain, and cooling systems running strong.

From impellers and ignition components to thermostats and transmission parts, every item in this category is curated for quality, compatibility, and long-lasting performance. Not sure where to start? Use our Boat Part Lookup Tool to instantly find the exact part you need for your specific make, model, and engine configuration.

At WaterSkis.com, we know your time on the water matters. That’s why we make it easy to find the right boat parts—fast, accurate, and backed by real-world expertise.

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  • MasterCraft OEM Rudder MasterCraft OEM Rudder
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    MasterCraft OEM Rudder - 197

    MasterCraft
    $749.99
    MasterCraft OEM Rudder- 197 This genuine MasterCraft OEM Rudder is model specific. If you have damaged your rudder, it is typical that your Rudder Port is also damaged along with other under water gear. Use the Parts Finder to select your year make and...
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  • MasterCraft OEM Rudder MasterCraft OEM Rudder
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    MasterCraft OEM Rudder - 196

    MasterCraft
    $1,174.99
    MasterCraft OEM Rudder- 196 This genuine MasterCraft OEM Rudder is model specific. If you have damaged your rudder it is typical that your Rudder Port is also damaged along with other UnderWater Gear. Use the Parts Finder to select your year make and...
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    $1,174.99
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  • MasterCraft OEM Strut MasterCraft OEM Strut
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    MasterCraft OEM Strut - 133

    MasterCraft
    $519.99
    MasterCraft OEM Strut - 133 This genuine MasterCraft OEM Strut is model specific. Even a small bend in your strut can cause vibrations and long term damage to your drive shaft and possibly transmission. If you have a bent strut get your boat dialed back...
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  • MasterCraft OEM Strut MasterCraft OEM Strut
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    MasterCraft OEM Strut - 131

    MasterCraft
    $474.99
    MasterCraft OEM Strut - 131 This genuine MasterCraft OEM Strut is model specific. Even a small bend in your strut can cause vibrations and long term damage to your drive shaft and possibly transmission. If you have a bent strut get your boat dialed back...
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    $474.99
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  • MasterCraft OEM Strut MasterCraft OEM Strut - 195
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    MasterCraft OEM Strut - 195

    MasterCraft
    $699.99
    MasterCraft OEM Strut - 195 This genuine MasterCraft OEM Strut is model specific. Even a small bend in your strut can cause vibrations and long term damage to your drive shaft and possibly transmission. If you have a bent strut get your boat dialed back...
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    $699.99
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  • MasterCraft OEM Drive Shaft 54.25"- 348 MasterCraft OEM Drive Shaft 54.25"- 348
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    MasterCraft OEM Drive Shaft 54.25"- 348

    MasterCraft
    $1,369.99
    MasterCraft OEM Drive Shaft 54.25"- 348 This genuine MasterCraft drive shaft is 54.25 inches long by 1-1/8 inch diameter with coupler. This drive shaft is specifically designed for the LSA Engine.   **The images are of a MasterCraft Drive Shaft,...
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  • MasterCraft OEM Drive Shaft 52.5" - 345 MasterCraft OEM Drive Shaft 52.5" - 345
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    MasterCraft OEM Drive Shaft 52.5" - 345

    MasterCraft
    $1,349.99
    MasterCraft OEM Drive Shaft 52.5" - 345 This genuine MasterCraft drive shaft is 52.5 inches long by 1-1/8 inch diameter with coupler. This drive shaft is specifically designed for the LSA Engine.   **The images are of a MasterCraft Drive Shaft,...
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  • MasterCraft OEM Strut - 137 MasterCraft OEM Strut - 137
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    MasterCraft OEM Strut - 137

    MasterCraft
    $639.99
    MasterCraft OEM Strut - 137 This genuine MasterCraft OEM Strut is model specific. Even a small bend in your strut can cause vibrations and long term damage to your drive shaft and possibly transmission. If you have a bent strut get your boat dialed back...
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    $639.99
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  • MasterCraft OEM Drive Shaft 48.75" - 342 MasterCraft OEM Drive Shaft 48.75" - 342MasterCraft OEM Drive Shaft 48.75" - 342
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    MasterCraft OEM Drive Shaft 48.75" - 342

    MasterCraft
    $729.99
    MasterCraft OEM Drive Shaft 48.75" - 342 This drive shaft is measured to be 48.75 inches long by 1-1/8inch in diameter. Comes with a new prop nut and cotter pin.   **The images are of a MasterCraft Drive Shaft, however, the specific Drive Shaft may...
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  • MasterCraft OEM Drive Shaft 50.5" - 341 MasterCraft OEM Drive Shaft 50.5" - 341
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    MasterCraft OEM Drive Shaft 50.5" - 341

    MasterCraft
    $774.99
      MasterCraft OEM Drive Shaft 50.5" - 341 This drive shaft is measured to be 50.5 inches long by 1-1/8inch in diameter. Comes with a new prop nut and cotter pin.   **The images are of a MasterCraft Drive Shaft, however, the specific Drive Shaft...
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    $774.99
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  • MasterCraft OEM Drive Shaft 49" - 337 MasterCraft OEM Drive Shaft 49" - 337
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    MasterCraft OEM Drive Shaft 49" - 337

    MasterCraft
    $754.99
    MasterCraft OEM Drive Shaft 49" - 337 This drive shaft is measured to be 49 inches long by 1-1/8inch in diameter. Comes with a new prop nut and cotter pin.   **The images are of a MasterCraft Drive Shaft, however, the specific Drive Shaft may look...
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    $754.99
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  • MasterCraft OEM Nose Cone Strut MasterCraft OEM Nose Cone Strut
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    MasterCraft OEM Strut - 136

    MasterCraft
    $539.99
    MasterCraft OEM Strut - 136 This genuine MasterCraft OEM Strut is model specific. Even a small bend in your strut can cause vibrations and long term damage to your drive shaft and possibly transmission. If you have a bent strut get your boat dialed back...
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    $539.99
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  • MasterCraft OEM Drive Shaft 57.25" - 334 MasterCraft OEM Drive Shaft 57.25" - 334
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    MasterCraft OEM Drive Shaft 57.25" - 334

    MasterCraft
    $594.99
    MasterCraft OEM Drive Shaft 57.25" - 334 This drive shaft is measured to be 57.25 inches long by 1-1/8inch in diameter. Comes with a new prop nut and cotter pin.   **The images are of a MasterCraft Drive Shaft, however, the specific Drive Shaft may...
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    $594.99
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  • MasterCraft OEM Drive Shaft 54.25" - 335 MasterCraft OEM Drive Shaft 54.25" - 335
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    MasterCraft OEM Drive Shaft 54.25" - 335

    MasterCraft
    $1,049.99
    MasterCraft OEM Drive Shaft 54.25" - 335 This drive shaft is measured to be 54.25 inches long by 1-1/8inch in diameter. Comes with a new prop nut and cotter pin.   **The images are of a MasterCraft Drive Shaft, however, the specific Drive Shaft may...
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    $1,049.99
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  • MasterCraft OEM Strut - Port - 145 MasterCraft OEM Strut - Port - 145
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    MasterCraft OEM Strut - Port - 101

    MasterCraft
    $294.99
    MasterCraft OEM Strut - Port - 101 This genuine MasterCraft OEM Strut is model specific. Even a small bend in your strut can cause vibrations and long term damage to your drive shaft and possibly transmission. If you have a bent strut get your boat...
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    $294.99
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  • MasterCraft OEM Drive Shaft 58" - 329 MasterCraft OEM Drive Shaft 58" - 329
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    MasterCraft OEM Drive Shaft 58" - 329

    MasterCraft
    $975.99
    MasterCraft OEM Drive Shaft 58" - 329 This drive shaft is measured to be 58 inches long by 1-1/8inch in diameter and comes with a 5inch coupler. Comes with a new prop nut and cotter pin.   **The images are of a MasterCraft Drive Shaft, however, the...
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    $975.99
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  • MasterCraft OEM Drive Shaft 56.25"- 333 MasterCraft OEM Drive Shaft 56.25"- 333
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    MasterCraft OEM Drive Shaft 56.25"- 333

    MasterCraft
    $559.99
    MasterCraft OEM Drive Shaft 56.25"- 333 This drive shaft is measured to be 56 and 1/4 inches long by 1-1/8inch in diameter. Comes with a new prop nut and cotter pin.   **The images are of a MasterCraft Drive Shaft, however, the specific Drive Shaft...
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    $559.99
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  • MasterCraft OEM Drive Shaft 52.25" - 310 MasterCraft OEM Drive Shaft 52.25" - 310
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    MasterCraft OEM Drive Shaft 52.25" - 310

    MasterCraft
    $799.99
    Drive Shaft 52.25" x 1-1/8" This genuine MasterCraft drive shaft is 52.25 inches long by 1-1/8 inch diameter with coupler. This drive shaft is specifically designed for MasterCraft V-Drive boats. Comes with a new prop nut and cotter pin. Designed for...
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  • MasterCraft Swim Platform Pin
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    MasterCraft Swim Platform Pin

    MasterCraft
    MSRP: $24.99
    $19.99
    MasterCraft Swim Platform Pin These replacement pins for your removable or folding MasterCraft Swim Platform Pins are the perfect option whether yours are worn or at the bottom of the lake. These pins have a 1/4" diameter and a 1 7/8" usable length...
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    MSRP: $24.99
    $19.99
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  • MasterCraft 1" Rubber Windshield Bumper
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    MasterCraft 1" Rubber Windshield Bumper

    MasterCraft
    MSRP: $9.99
    $7.99
    MasterCraft 1" Rubber Windshield Bumper This MasterCraft 1" Rubber Windshield Bumper has a through hole for you to screw onto your windshield. Built with rubber to stand the test of time, this protects the windshield and fiberglass around it from rubbing...
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    MSRP: $9.99
    $7.99
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At WaterSkis.com, we combine deep product knowledge with industry-leading tools to help boat owners find the exact inboard boat parts they need. Whether you're working on a MasterCraft, Supra, or Moomba, our parts deliver the fit and reliability you can trust.

Use our Boat Part Lookup Tool to simplify your search, or explore related categories like cooling systems, engine components, and ignition parts. We’ve got everything you need to keep your boat running at its best.