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.


Filters
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • OJ Prop 13X11-3 Blade | Keyed | Bore 1" | LH | 0.90

    OJ Prop 13X11-3 Blade | Keyed | Bore 1" | LH | 0.90

    OJ Props
    MSRP: $550.00
    $481.10
    OJ Prop 13X11-3 Blade | Keyed | Bore 1" | LH | 0.90 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The SkiPro propellers boast an enhanced pitch distribution along with a new blade...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $550.00
    $481.10
    Subtotal:
  • MasterCraft OEM Ballast Water Sender 12" - 978

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 12" - 978 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...
    Qty in Cart: 0
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender 14" - 977

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 14" - 977 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...
    Qty in Cart: 0
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender 10" - 976

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 10" - 976 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...
    Qty in Cart: 0
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender 9" - 975

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 9" - 975 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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender 8" - 974

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 8" - 974 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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender 7" - 973

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 7" - 973 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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender 6" - 972

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 6" - 972 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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender 5" - 971

    MasterCraft
    $199.99
    MasterCraft OEM Ballast Water Sender 5" - 971 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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • 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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • 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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender - 288

    MasterCraft
    $199.99
    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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender - 287

    MasterCraft
    $199.99
    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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender - 286

    MasterCraft
    $199.99
    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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender - 285

    MasterCraft
    $199.99
    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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender - 284

    MasterCraft
    $199.99
    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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender - 282

    MasterCraft
    $199.99
    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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • MasterCraft OEM Ballast Water Sender - 268

    MasterCraft
    $199.99
    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
    Quantity:
    Price:
    $199.99
    Subtotal:
  • 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
    Quantity:
    Price:
    $5.99
    Subtotal:
  • 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
    Quantity:
    Price:
    $3.49
    Subtotal:
  • Total: items /

Adding your products to cart

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.