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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  • Mastercraft Nylon 9" T-Handle Drain Plug Assembly

    Mastercraft Nylon 9" T-Handle Drain Plug Assembly

    MasterCraft
    $64.99
    Mastercraft Nylon 9" T-Handle Drain Plug Assembly The 9" T-handle drain plug assembly is made of Nylon and is made for a marine environment and is a direct factory replacement for the deep hull X-Series MasterCrafts. Use the boat part look up below to...
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    $64.99
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  • MasterCraft OEM Rudder- 168

    MasterCraft OEM Rudder - 168

    MasterCraft
    $499.99
      MasterCraft OEM Rudder- 168 This genuine MasterCraft OEM Rudder is model specific. If you have damaged your rudder it is typical that your Rudder Port is also damaged along with other UnderWater Gear. Use the Parts Finder to select your year make...
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    $499.99
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  • MasterCraft Trailer Actuator - 5" Reliable Replacement w/Solenoid

    MasterCraft Trailer Actuator - 5" Reliable Replacement w/Solenoid

    MasterCraft
    $1,249.99
    MasterCraft Trailer Actuator - 5" Reliable Replacement w/Solenoid Zinc A60 UFP 5" Reliable Replacement Actuator for MasterCraft trailers. NO HARDWARE INCLUDED. You will need to have this etched, primed, and painted to match your current trailer. ***THIS...
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    $1,249.99
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  • MasterCraft Screen - Observer Display (Patron)

    MasterCraft Screen - Observer Display (Patron)

    MasterCraft
    $1,499.99
      MasterCraft Screen - Observer Display (Patron)   ***Screens/Displays are not eligible for Return. All sales are final***
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    $1,499.99
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  • MasterCraft Control/Throttle Cable - 19'

    MasterCraft Control/Throttle Cable - 19'

    MasterCraft
    $80.99
    MasterCraft Control/Throttle Cable - 19' MasterCraft Control/Throttle Cable - 19'. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $80.99
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  • Bimini Canvas Only w/Boot (Black) - '03-'04 XStar

    MasterCraft
    $849.99
      Bimini Canvas Only w/Boot (Black) - '03-'04 XStar Bimini Canvas Only w/Boot. Black in color. For 2003 & 2004 XStar. ***Please call or email us with your boat Hull ID Number to verify fit***This canvas is made to order from MasterCraft. All...
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    $849.99
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  • MasterCraft Gauge - Temperature White '08

    MasterCraft Gauge - Temperature White '08

    MasterCraft
    $699.99
      MasterCraft Gauge - Temperature White '08 MasterCraft Gauge - Temperature. White face. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $699.99
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  • MasterCraft Trailer Actuator - STD UFP

    MasterCraft Trailer Actuator - STD UFP

    MasterCraft
    $899.99
    MasterCraft Trailer Actuator - STD UFP COMES UNPAINTED - You will need to have this etched, primed, and painted to match your current trailer. ***THIS PRODUCT IS NOT ELIGIBLE FOR RETURNS/REFUNDS/EXCHANGES. ALL SALES ARE FINAL ON THIS PRODUCT*** Use the...
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    $899.99
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  • MasterCraft Trailer Spindle | 658871

    MasterCraft Trailer Spindle | 658871

    MasterCraft
    $189.99
    MasterCraft Trailer Spindle Axle '15 Spindle 1,825lbs S/L Torsion Axle SS Wear Sleeve Zerc **This is a non-stocking, special order item. All sales are FINAL on this product***  
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    $189.99
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  • Bimini Canvas Only w/Boot (Black) - ZFT2 X2

    MasterCraft
    $999.99
      Bimini Canvas Only w/Boot (Black) - ZFT2 X2 Bimini Canvas Only w/Boot. Black in color. For ZFT2 Tower X2. ***Please call or email us with your boat Hull ID Number to verify fit***This canvas is made to order from MasterCraft. All canvas order take...
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    $999.99
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  • MasterCraft Transom Cover - Mooring Black XT23

    MasterCraft
    $449.99
    MasterCraft Transom Cover - Mooring Black XT23 This cover is made to order from MasterCraft. All covers take approximatley 6-8 weeks to be built. This item can not be returned as it is a special order that is made to order for your exact boat. This is a...
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    $449.99
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  • MasterCraft Trailer 14" Rotor-Hub Oil Seal

    MasterCraft Trailer 14" Rotor-Hub Oil Seal

    MasterCraft
    $9.99
    MasterCraft Trailer 14" Rotor-Hub Oil Seal Double Lip 2.565" OD Oil Seal for MasterCraft 14" Rotor-Hub. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $9.99
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  • MasterCraft Trailer 14" Rotor-Hub Outer Bearing

    MasterCraft Trailer 14" Rotor-Hub Outer Bearing

    MasterCraft
    $20.99
    MasterCraft Trailer 14" Rotor-Hub Outer Bearing Outer Bearing for MasterCraft 14" Rotor-Hub. L-44649 Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $20.99
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  • MasterCraft Trailer 14" Rotor-Hub Inner Bearing

    MasterCraft Trailer 14" Rotor-Hub Inner Bearing

    MasterCraft
    $19.99
    MasterCraft Trailer 14" Rotor-Hub Inner Bearing Inner Bearing for MasterCraft 14" Rotor-Hub. L-68149 Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $19.99
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  • 18' Rotary Steering Cable

    18' Rotary Steering Cable

    SeaStar Solutions
    $199.99
    18' Rotary Steering Cable When the steering on your boat gets stiff it's time to replace the steering cable. This 18' Steering cable is a direct replacement for Many MasterCraft boats. A new steering cable helps keep your boat operating in peak...
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    $199.99
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  • MasterCraft Screen - 8 Button X-Series/Maristars

    MasterCraft Screen - 8 Button X-Series/Maristars

    MasterCraft
    $2,499.99
      MasterCraft Screen - 8 Button X-Series/Maristars OEM 4" display screen for MasterCraft boats from 2013 and newer. 4" x 2.5". Screen only, no bezel.   ***Screens/Displays are not eligible for Return. All sales are final***
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    $2,499.99
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  • Skier's' Choice Old School Bow Navigation Light

    Skier's' Choice Old School Bow Navigation Light

    Skiers Choice
    $97.25
      Skier's' Choice Old School Bow Navigation Light Replacement Supra/Moomba Bow Navigation Light for use on older model boats. This bow marker light features a green and red display for viability at night and a chrome cover for rugged good looks and...
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    $97.25
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  • Moomba Boat Cover w/Logo V2 w/OZ Tower - Mobius LSV

    Skiers Choice
    $2,499.99
    Moomba Boat Cover w/Logo V2 w/OZ Tower - Mobius LSV This cover is made to order from Moomba. All covers take approximately 6-8 weeks to be built. This item cannot be returned as it is a special order that is made to order for your exact boat...
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    $2,499.99
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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.