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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  • Rule Bilge Float Switch

    $74.99
    Rule Bilge Float Switch Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    $74.99
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  • Rule Bilge Pump | 500GPH

    $63.99
    Rule Bilge Pump 500GPH This is a universal Rule Bilge Pump 500GPH. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    $63.99
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  • MasterCraft 1 1/8" Strut Bearing | 200165 MasterCraft 1 1/8" Strut Bearing | 200165

    MasterCraft 1 1/8" Strut Bearing | 200165

    MasterCraft
    $97.25
    MasterCraft Boats Drive Shaft Strut Bearing 1 1/8" This is the Replacement MasterCraft Strut Bushing/Bearing for a 1 1/8" strut. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    $97.25
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  • MasterCraft V-Dig Button Replacement Kit MasterCraft V-Dig Button Replacement Kit

    MasterCraft V-Dig Button Replacement Kit

    MasterCraft
    $59.99
    MasterCraft V-Dig Button Replacement Kit If your buttons on your Medallion V-Dig found in MasterCraft Boats in the late 2000's are not allowing you to change through the menu you might be in need of a new button kit. Get your V-Dig functional again!
    Qty in Cart: 0
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    $59.99
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  • OJ Prop 15X13.5-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Prop 15X13.5-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 15X13.5-4 Blade | Splined | Bore 1 1/8" | LH By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-4 propellers boast an enhanced pitch distribution along with a new...
    Qty in Cart: 0
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    MSRP: $828.00
    $725.05
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  • OJ Prop 15X14.5-4 Blade | Splined | Bore 1 1/8" | LH (1816-MF)

    OJ Prop 15X14.5-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 15X14.5-4 Blade | Splined | Bore 1 1/8" | LH By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-4 propellers boast an enhanced pitch distribution along with a new...
    Qty in Cart: 0
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    MSRP: $828.00
    $725.05
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  • OJ Prop 13.5X16-4 Blade | Keyed | Bore 1 1/8" | LH (437-MF)

    OJ Prop 13.5X16-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $641.00
    $561.00
    OJ Prop 13.5X16-4 Blade | Keyed | Bore 1 1/8" | LH 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 blade...
    Qty in Cart: 0
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    MSRP: $641.00
    $561.00
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  • OJ Prop 15X13.5-4 Blade | Keyed | Bore 1 1/8" | LH (1921-MF)

    OJ Prop 15X13.5-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 15X13.5-4 Blade | Keyed | Bore 1 1/8" | LH By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-4 propellers boast an enhanced pitch distribution along with a new blade...
    Qty in Cart: 0
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    MSRP: $828.00
    $725.05
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  • OJ Prop 16X15-4 Blade | Keyed | Bore 1 1/8" | LH (963-MF)

    OJ Prop 16X15-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16X15-4 Blade | Keyed | Bore 1 1/8" | LH 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 blade...
    Qty in Cart: 0
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    MSRP: $1,048.00
    $917.15
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  • OJ Prop 15X12-4 Blade | Keyed | Bore 1 1/8" | LH (1997-MF)

    OJ Prop 15X12-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 15X12-4 Blade | Keyed | Bore 1 1/8" | LH By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-4 propellers boast an enhanced pitch distribution along with a new blade...
    Qty in Cart: 0
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    Price:
    MSRP: $828.00
    $725.05
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  • OJ Prop 15X16.25-4 Blade | Keyed | Bore 1 1/8" | LH (1925-MF)

    OJ Prop 15X16.25-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 15X16.25-4 Blade | Keyed | Bore 1 1/8" | LH By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-4 propellers boast an enhanced pitch distribution along with a new blade...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $828.00
    $725.05
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  • OJ Prop 15X14.5-4 Blade | Keyed | Bore 1 1/8" | LH (1916-MF)

    OJ Prop 15X14.5-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $828.00
    $725.05
    OJ Prop 15X14.5-4 Blade | Keyed | Bore 1 1/8" | LH By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-4 propellers boast an enhanced pitch distribution along with a new blade...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $828.00
    $725.05
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  • OJ Prop 16X14-4 Blade | Keyed | Bore 1 1/8" | LH (964-MF)

    OJ Prop 16X14-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16X14-4 Blade | Keyed | Bore 1 1/8" | LH 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 blade...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
  • OJ Prop 16X13-4 Blade | Keyed | Bore 1 1/8" | LH (960-MF)

    OJ Prop 16X13-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16X13-4 Blade | Keyed | Bore 1 1/8" | LH 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 blade...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
  • OJ Prop 16X17-4 Blade | Keyed | Bore 1 1/8" | LH (967-MF)

    OJ Prop 16X17-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16X17-4 Blade | Keyed | Bore 1 1/8" | LH 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 blade...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,048.00
    $917.15
    Subtotal:
  • Supra | Moomba Tracking Fin | 296 Supra | Moomba Tracking Fin | 296

    Supra | Moomba Tracking Fin | 296

    Skiers Choice
    $299.99
    Supra | Moomba Tracking Fin 113296 If you got yourself into a shallow spot on the lake and bent your tracking fin this is a OEM Supra and Moomba Replacement.  Fin, Tracking, 11-9/16 Long Use the Boat Part Lookup to ensure you are getting...
    Qty in Cart: 0
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    $299.99
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  • Supra | Moomba Rudder Assembly | 080

    Supra | Moomba Rudder Assembly | 080

    Skiers Choice
    $1,099.99
    Supra | Moomba Rudder Assembly | 117080 This is a complete rudder and rudder port assembly for Supra and Moomba Boats. Rudder Assembly Kit 105 degree, with tuning bar. Use the Boat Part Lookup to ensure you are getting the correct part for your...
    Qty in Cart: 0
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    $1,099.99
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  • Supra | Moomba Rudder Assembly | 202

    Supra | Moomba Rudder Assembly | 202

    Skiers Choice
    $1,849.99
    Supra | Moomba Rudder Assembly | 115202 This is a complete rudder and rudder port assembly for Supra and Moomba Boats. Rudder Assembly Kit 105 degree, no tuning wing. Use the Boat Part Lookup to ensure you are getting the correct part for your Supra...
    Qty in Cart: 0
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    Price:
    $1,849.99
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  • Supra | Moomba Rudder Assembly | 135 (113135) Supra | Moomba Rudder Assembly | 135 (113135)

    Supra | Moomba Rudder Assembly | 135

    Skiers Choice
    $1,399.99
    Supra | Moomba Rudder Assembly | 113135 This is a complete rudder and rudder port assembly for Supra and Moomba Boats. Rudder Assembly Kit. Use the Boat Part Lookup to ensure you are getting the correct part for your Supra and Moomba Boat.  
    Qty in Cart: 0
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    Price:
    $1,399.99
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  • Supra | Moomba Rudder Assembly | 281

    Supra | Moomba Rudder Assembly | 281

    Skiers Choice
    $699.99
    Supra | Moomba Rudder Assembly | 108281 This is a complete rudder and rudder port assembly for Supra and Moomba Boats. Rudder Assembley Kit, Large (V Drive) Use the Boat Part Lookup to ensure you are getting the correct part for your Supra and Moomba...
    Qty in Cart: 0
    Quantity:
    Price:
    $699.99
    Subtotal:
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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.