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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  • OJ Prop 16X18-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 16X18-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 16X18-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16X18-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
    Add to Cart
  • OJ Prop 14.75X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 14.75X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 14.75X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 14.75X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $828.00
    $725.05
    Subtotal:
    Add to Cart
  • OJ Prop 14.75X17.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 14.75X17.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 14.75X17.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 14.75X17.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $828.00
    $725.05
    Subtotal:
    Add to Cart
  • OJ Prop 14.75X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 14.75X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 14.75X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 14.75X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $828.00
    $725.05
    Subtotal:
    Add to Cart
  • OJ Prop 16.5X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 16.5X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 16.5X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16.5X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
    Add to Cart
  • OJ Prop 16X16.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 16X16.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 16X16.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16X16.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
    Add to Cart
  • OJ Prop 14.75X15.75-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 14.75X15.75-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 14.75X15.75-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 14.75X15.75-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $828.00
    $725.05
    Subtotal:
    Add to Cart
  • OJ Prop 16.5X19.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 16.5X19.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 16.5X19.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16.5X19.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
    Add to Cart
  • OJ Prop 16.5X18-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 16.5X18-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 16.5X18-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16.5X18-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
    Add to Cart
  • OJ Prop 14.75X15.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 14.75X15.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 14.75X15.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 14.75X15.25-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $828.00
    $725.05
    Subtotal:
    Add to Cart
  • OJ Prop 18X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 OJ Prop 18X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120
    Quick view

    OJ Prop 18X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120

    OJ Props
    MSRP: $1,139.00
    $997.05
    OJ Prop 18X17-4 Blade | Splined | Bore 1 1/8" | LH | 0.120 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,139.00
    $997.05
    Subtotal:
    Add to Cart
  • OJ Prop 14.25X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 OJ Prop 14.25X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 14.25X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $782.00
    $684.25
    OJ Prop 14.25X14.5-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 The XMP EDGE is the first propeller in our industry designed specifically for the V-drive wakeboard boat. This prop offers a larger diameter with lower pitch to better handle the additional...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $782.00
    $684.25
    Subtotal:
    Add to Cart
  • OJ Prop 14.25X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 OJ Prop 14.25X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.110
    Quick view

    OJ Prop 14.25X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.110

    OJ Props
    MSRP: $782.00
    $684.25
    OJ Prop 14.25X14-4 Blade | Splined | Bore 1 1/8" | LH | 0.110 The XMP EDGE is the first propeller in our industry designed specifically for the V-drive wakeboard boat. This prop offers a larger diameter with lower pitch to better handle the additional...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $782.00
    $684.25
    Subtotal:
    Add to Cart
  • OJ Prop 17X16-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X16-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X16-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X15.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X15.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X15.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X19.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X19.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X19.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X14-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X14-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X14-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X15-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X15-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X15-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 17X17-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 17X17-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,095.00
    $958.80
    OJ Prop 17X17-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.00
    $958.80
    Subtotal:
    Add to Cart
  • OJ Prop 16.5X16.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110
    Quick view

    OJ Prop 16.5X16.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16.5X16.5-4 Blade | Keyed | Bore 1 1/4" | LH | 0.110 By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
    Add to Cart
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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.