Inboard Boat Parts

Keep your inboard boat running strong with genuine replacement parts for Mastercraft, Supra, Moomba, and other top performance brands. Whether you own a ski boat, wakeboard boat, or wakesurf boat, WaterSkis.com has the inboard boat parts you need to keep your time on the water uninterrupted.

Explore our curated selection of Mastercraft boat parts, Supra boat parts, Moomba boat parts, and more—sourced from trusted OEMs and aftermarket brands known for quality, compatibility, and long-term durability. Our inventory includes engine components, electrical parts, ballast fittings, and maintenance essentials tailored to inboard boats used for watersports.

Not sure what fits your boat? Use our Boat Part Lookup Tool to match parts by make, model, and year for total confidence. At WaterSkis.com, we’re committed to helping you get back to skiing, surfing, and riding—with gear that performs when it counts.


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  • MasterCraft OEM Ballast Water Sender 4" - 970

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 4" - 970 If your ballast gauges are no longer reading correct you probably have a bad ballast sender. Use the Parts Finder or the Matrix below to ensure you are getting the correct Ballast Sender for your MasterCraft...
    Qty in Cart: 0
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    $199.99
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  • MasterCraft OEM Ballast Water Sender 9" - 938

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 9" - 938 If your ballast gauges are no longer reading correct you probably have a bad ballast sender. Use the Parts Finder or the Matrix below to ensure you are getting the correct Ballast Sender for your MasterCraft...
    Qty in Cart: 0
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    $199.99
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  • MasterCraft OEM Ballast Water Sender - 288

    MasterCraft
    $164.99
    MasterCraft OEM Ballast Water Sender - 288 If your ballast gauges are no longer reading correct you probably have a bad ballast sender. Use the Parts Finder or the Matrix below to ensure you are getting the correct Ballast Sender for your MasterCraft...
    Qty in Cart: 0
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    $164.99
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  • MasterCraft OEM Ballast Water Sender - 287

    MasterCraft
    $164.99
    MasterCraft OEM Ballast Water Sender - 287 If your ballast gauges are no longer reading correct you probably have a bad ballast sender. Use the Parts Finder or the Matrix below to ensure you are getting the correct Ballast Sender for your MasterCraft...
    Qty in Cart: 0
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    $164.99
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  • MasterCraft OEM Ballast Water Sender - 286

    MasterCraft
    $164.99
    MasterCraft OEM Ballast Water Sender - 286 If your ballast gauges are no longer reading correct you probably have a bad ballast sender. Use the Parts Finder or the Matrix below to ensure you are getting the correct Ballast Sender for your MasterCraft...
    Qty in Cart: 0
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    $164.99
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  • MasterCraft OEM Ballast Water Sender - 285

    MasterCraft
    $164.99
    MasterCraft OEM Ballast Water Sender - 285 If your ballast gauges are no longer reading correct you probably have a bad ballast sender. Use the Parts Finder or the Matrix below to ensure you are getting the correct Ballast Sender for your MasterCraft...
    Qty in Cart: 0
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    Price:
    $164.99
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  • MasterCraft OEM Ballast Water Sender - 284

    MasterCraft
    $164.99
    MasterCraft OEM Ballast Water Sender - 284 If your ballast gauges are no longer reading correct you probably have a bad ballast sender. Use the Parts Finder or the Matrix below to ensure you are getting the correct Ballast Sender for your MasterCraft...
    Qty in Cart: 0
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    Price:
    $164.99
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  • MasterCraft OEM Ballast Water Sender - 282

    MasterCraft
    $164.99
    MasterCraft OEM Ballast Water Sender - 282 If your ballast gauges are no longer reading correct you probably have a bad ballast sender. Use the Parts Finder or the Matrix below to ensure you are getting the correct Ballast Sender for your MasterCraft...
    Qty in Cart: 0
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    Price:
    $164.99
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  • MasterCraft OEM Ballast Water Sender - 268

    MasterCraft
    $164.99
    MasterCraft OEM Ballast Water Sender - 268 If your ballast gauges are no longer reading correct you probably have a bad ballast sender. Use the Parts Finder or the Matrix below to ensure you are getting the correct Ballast Sender for your MasterCraft...
    Qty in Cart: 0
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    $164.99
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  • Ballast Hose 1.5" Inside Diameter

    MasterCraft
    $5.99
    Ballast Hose 1.5" Inside Diameter If you are upgrading to the massive High Flow pumps then you will need the 1.5" inside diameter ballast hose. This is commenly seen in MasterCraft's with the FastFill ballast option. *This item is sold by the foot...
    Qty in Cart: 0
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    $5.99
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  • Ballast Hose 1-1/8" Inside Diameter

    MasterCraft
    $3.49
    Ballast Hose 1 1/8" Inside Diameter Everyone is looking to add extra ballast to their boat to create the ultimate surf wave. The 1 1/8" diameter hose is the most common hose used in replacement ballast as well as new ballast systems. *This item is sold...
    Qty in Cart: 0
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    $3.49
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  • Ballast Hose 3/4" Inside Diameter

    MasterCraft
    $3.49
    Ballast Hose 3/4" Inside Diameter If you are adding additional ballast and need some 3/4" hose look no further. Maybe your ballast hose is broken or cracked and needs replacement. This will also be the same for bilge pumps in certain years, makes and...
    Qty in Cart: 0
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    $3.49
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  • MasterCraft OEM Tracking Fin - 654

    MasterCraft
    $199.99
    MasterCraft OEM Tracking Fin- 654 This genuine MasterCraft OEM Tracking is model specific. If you have damaged your rudder Tracking Fin it is typical that you have with other Under Water Gear damage. Use the Parts Finder to select your year make and...
    Qty in Cart: 0
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    $199.99
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  • MasterCraft OEM Tracking Fin - 653

    MasterCraft
    $129.99
    MasterCraft OEM Tracking Fin- 653 This genuine MasterCraft OEM Tracking is model specific. If you have damaged your rudder Tracking Fin it is typical that you have with other Under Water Gear damage. Use the Parts Finder to select your year make and...
    Qty in Cart: 0
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    $129.99
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  • MasterCraft OEM Rudder Port- 174

    MasterCraft OEM Rudder Port - 174

    MasterCraft
    $323.99
    MasterCraft OEM Rudder Port- 174 This genuine MasterCraft OEM Rudder Port is model specific. If you have damaged your rudder Port it is typical that your Rudder is also damaged along with other Under Water Gear. Use the Parts Finder to select your year...
    Qty in Cart: 0
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    $323.99
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  • MasterCraft OEM Rudder MasterCraft OEM Rudder

    MasterCraft OEM Rudder - 657

    MasterCraft
    $479.99
    MasterCraft OEM Rudder- 657 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...
    Qty in Cart: 0
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    $479.99
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  • MasterCraft OEM Rudder MasterCraft OEM Rudder

    MasterCraft OEM Rudder - 651

    MasterCraft
    $829.99
    MasterCraft OEM Rudder- 651 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...
    Qty in Cart: 0
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    $829.99
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  • MasterCraft OEM Rudder MasterCraft OEM Rudder

    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...
    Qty in Cart: 0
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    $749.99
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  • MasterCraft OEM Rudder MasterCraft OEM Rudder

    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...
    Qty in Cart: 0
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    $1,174.99
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  • MasterCraft OEM Strut MasterCraft OEM Strut

    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...
    Qty in Cart: 0
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    $519.99
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Whether you're fixing a small issue or tackling a full-season tune-up, WaterSkis.com is your go-to source for inboard boat parts that match your boat and your lifestyle. We carry trusted parts for MasterCraft, Supra, Moomba, and other leading ski and wakeboard boats—all backed by our expert support. Need help finding the exact part? Use our Boat Part Lookup Tool for a fast, accurate match. And don’t forget to check out related categories like Boat Cleaning Products and Ballast System Parts to complete your setup.