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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  • OJ Prop 14X18-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90 OJ Prop 14X18-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90
    Quick view

    OJ Prop 14X18-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90

    OJ Props
    MSRP: $566.00
    $552.50
    OJ Prop 14X18-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $566.00
    $552.50
    Subtotal:
    Add to Cart
  • OJ Prop 14X18-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 OJ Prop 14X18-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90
    Quick view

    OJ Prop 14X18-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90

    OJ Props
    MSRP: $566.00
    $552.50
    OJ Prop 14X18-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $566.00
    $552.50
    Subtotal:
    Add to Cart
  • OJ Prop 14X16-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90 OJ Prop 14X16-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90
    Quick view

    OJ Prop 14X16-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90

    OJ Props
    MSRP: $566.00
    $552.50
    OJ Prop 14X16-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $566.00
    $552.50
    Subtotal:
    Add to Cart
  • OJ Prop 14X16-4 Blade | Keyed | Bore 1" | RH | 0.90 OJ Prop 14X16-4 Blade | Keyed | Bore 1" | RH | 0.90
    Quick view

    OJ Prop 14X16-4 Blade | Keyed | Bore 1" | RH | 0.90

    OJ Props
    MSRP: $566.00
    $552.50
    OJ Prop 14X16-4 Blade | Keyed | Bore 1" | RH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $566.00
    $552.50
    Subtotal:
    Add to Cart
  • OJ Prop 14X16-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 OJ Prop 14X16-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90
    Quick view

    OJ Prop 14X16-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90

    OJ Props
    MSRP: $566.00
    $552.50
    OJ Prop 14X16-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $566.00
    $552.50
    Subtotal:
    Add to Cart
  • OJ Prop 14X16-4 Blade | Keyed | Bore 1" | LH | 0.90 OJ Prop 14X16-4 Blade | Keyed | Bore 1" | LH | 0.90
    Quick view

    OJ Prop 14X16-4 Blade | Keyed | Bore 1" | LH | 0.90

    OJ Props
    MSRP: $566.00
    $552.50
    OJ Prop 14X16-4 Blade | Keyed | Bore 1" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $566.00
    $552.50
    Subtotal:
    Add to Cart
  • OJ Prop 13X16-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90 OJ Prop 13X16-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90
    Quick view

    OJ Prop 13X16-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X16-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X16-4 Blade | Keyed | Bore 1" | RH | 0.90 OJ Prop 13X16-4 Blade | Keyed | Bore 1" | RH | 0.90
    Quick view

    OJ Prop 13X16-4 Blade | Keyed | Bore 1" | RH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X16-4 Blade | Keyed | Bore 1" | RH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X16-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 OJ Prop 13X16-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90
    Quick view

    OJ Prop 13X16-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X16-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X14-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90 OJ Prop 13X14-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90
    Quick view

    OJ Prop 13X14-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X14-4 Blade | Keyed | Bore 1 1/8" | RH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X14-4 Blade | Keyed | Bore 1" | RH | 0.90 OJ Prop 13X14-4 Blade | Keyed | Bore 1" | RH | 0.90
    Quick view

    OJ Prop 13X14-4 Blade | Keyed | Bore 1" | RH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X14-4 Blade | Keyed | Bore 1" | RH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X14-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 OJ Prop 13X14-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90
    Quick view

    OJ Prop 13X14-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X14-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X14-4 Blade | Keyed | Bore 1" | LH | 0.90 OJ Prop 13X14-4 Blade | Keyed | Bore 1" | LH | 0.90
    Quick view

    OJ Prop 13X14-4 Blade | Keyed | Bore 1" | LH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X14-4 Blade | Keyed | Bore 1" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.90 OJ Prop 13X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.90
    Quick view

    OJ Prop 13X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
      OJ Prop 13X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X13-4 Blade | Keyed | Bore 1" | RH | 0.90 OJ Prop 13X13-4 Blade | Keyed | Bore 1" | RH | 0.90
    Quick view

    OJ Prop 13X13-4 Blade | Keyed | Bore 1" | RH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X13-4 Blade | Keyed | Bore 1" | RH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X13-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 OJ Prop 13X13-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90
    Quick view

    OJ Prop 13X13-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X13-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 13X13-4 Blade | Keyed | Bore 1" | LH | 0.90 OJ Prop 13X13-4 Blade | Keyed | Bore 1" | LH | 0.90
    Quick view

    OJ Prop 13X13-4 Blade | Keyed | Bore 1" | LH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 13X13-4 Blade | Keyed | Bore 1" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 12.5X17-4 Blade | Keyed | Bore 1" | RH | 0.90 OJ Prop 12.5X17-4 Blade | Keyed | Bore 1" | RH | 0.90
    Quick view

    OJ Prop 12.5X17-4 Blade | Keyed | Bore 1" | RH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 12.5X17-4 Blade | Keyed | Bore 1" | RH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 12X14-4 Blade | Keyed | Bore 1" | LH | 0.90 OJ Prop 12X14-4 Blade | Keyed | Bore 1" | LH | 0.90
    Quick view

    OJ Prop 12X14-4 Blade | Keyed | Bore 1" | LH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 12X14-4 Blade | Keyed | Bore 1" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
  • OJ Prop 12X13-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 OJ Prop 12X13-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90
    Quick view

    OJ Prop 12X13-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90

    OJ Props
    MSRP: $544.00
    $531.25
    OJ Prop 12X13-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 Like its predecessor, The LEGEND 3-blade, The FORCE 4-BLADE is a strong and affordable performer. The FORCE 4-Blade was the first 4-blade introduced that provided the tournament tow boat a strong,...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $544.00
    $531.25
    Subtotal:
    Add to Cart
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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.