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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  • Supra & Moomba Paddlewheel CAN Triducer
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    Paddlewheel, CAN Triducer

    Skiers Choice
    $749.99
    Paddlewheel, CAN Triducer This is the OEM replacement for Moomba and Supra Boats. Please use the boat part look up below to ensure you have the correct part for your year, make, and model.  
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    $749.99
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  • GPS & Zero Off Dash Antenna
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    GPS & Zero Off Dash Antenna

    Skiers Choice
    $1,549.99
    GPS & Zero Off Dash Antenna If you are having issues with your GPS Cruise control dropping out this could be your solution. This is a direct replacement for Supra and Moomba Boats. Use the boat part look up below to ensure you are purchasing the...
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    $1,549.99
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  • Mastercraft 8" Text Decal - White
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    Mastercraft 8" Text Decal - White

    MasterCraft
    $7.99
    Mastercraft 8" Text Decal - White Wherever life takes you, take your pride in Mastercraft boats on the road and accessorize with the MasterCraft Text White Decal.
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    $7.99
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  • HVS Spark Plug Wire Set
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    HVS Spark Plug Wire Set

    Indmar
    $194.99
    HVS Spark Plug Wire Set Keep your engine running smoothly with the HVS Spark Plug Wire Set. Designed for high-performance marine and automotive applications, this wire set ensures consistent spark delivery, reduced electrical resistance, and...
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    $194.99
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  • Supra and Moomba Ignition Switch With Keys Ignition Switch With Keys
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    Ignition Switch With Keys

    Skiers Choice
    $49.99
    Supra & Moomba Replacement Ignition Switch Keep your boat starting like new every time with this Supra and Moomba Ignition Switch with keys. This switch is the replacement part for virtually all MasterCraft boats from 2013 to Current. This is also...
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    $49.99
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  • OJ Prop 14X20-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90 OJ Prop 14X20-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90
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    OJ Prop 14X20-4 Blade | Keyed | Bore 1 1/8" | LH | 0.90

    OJ Props
    MSRP: $566.00
    $552.50
    OJ Prop 14X20-4 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,...
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    Qty in Cart: 0
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    MSRP: $566.00
    $552.50
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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
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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.