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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  • MasterCraft 1-1/8" Strut Bearing | 200137A

    MasterCraft 1-1/8" Strut Bearing | 200137A

    MasterCraft
    $350.99
    MasterCraft Strut Bearing 1-1/8" | 200137A This is the replacement MasterCraft Drive Shaft Strut Bushing/Bearing for a the 200136 and 200137 1-1/8" struts. 2 Piece set, Blue Super Slick. Use the boat part look up below to ensure you are purchasing the...
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    $350.99
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  • Ilmor FEAD/Tensioner Conversion Kit

    Ilmor FEAD/Tensioner Conversion Kit

    Ilmor
    $699.99
      Ilmor FEAD/Tensioner Conversion Kit This conversion kit replaces the tensioner and FEAD bracket on 2010-2016 5.7L Ilmor engines. 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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  • Ilmor Raw Water Pump to Power Steering Heat Exchanger Hose | 50T-0066

    Ilmor Raw Water Pump to Power Steering Heat Exchanger Hose | 50T-0066

    Ilmor
    $39.99
      Ilmor Raw Water Pump to Power Steering Heat Exchanger Hose | 50T-0066 This genuine Ilmor molded hose is specifically manufactured to fit your engine and is made from the highest quality materials ensuring reliability and durability.  
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    $39.99
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  • MasterCraft Trailer Clearance Light - Amber LED

    MasterCraft Trailer Clearance Light - Amber LED

    MasterCraft
    $14.99
      MasterCraft Trailer Clearance Light - Amber LED 3/4" LED MasterCraft Trailer Clearance Light - Amber. Sold individually Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $14.99
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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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  • Ilmor Engine Control Module (ECU)

    Ilmor Engine Control Module (ECU)

    Ilmor
    $999.99
    Ilmor Engine Control Module (ECU) Please include engine serial number, hours, and number of starts in the notes on your order. Compatible with the following engines: MV8 5.7L-OPS - V-Drive 5000MPI (5.7L) - Direct Drive MV8 5.7L - Direct Drive 5000MPI (5...
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    $999.99
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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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  • Indmar "J" Hose w/Spring for 305/350

    Indmar "J" Hose w/Spring for 305/350

    Indmar
    $79.99
    Indmar "J" Hose w/Spring for 305/350 Use the boat part look up below to ensure you are purchasing the correct part for your boat.
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    $79.99
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  • Ilmor Belt | MY2020+ GDI Ilmor Belt | MY2020+ GDI

    Ilmor Belt | MY2020+ GDI

    Ilmor
    $59.99
    Ilmor Belt | MY2020+ GDI This Ilmor specified belt keeps your accessory drive running and is made of top quality materials to ensure a long service life. Specifically designed by Ilmor for the MY2020+ GDI engines with crank driven water pump. Use the...
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    $59.99
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  • Ilmor Engine Control Module (ECU) | GEN 5 GDI

    Ilmor Engine Control Module (ECU) | GEN 5 GDI

    Ilmor
    $1,699.99
    Ilmor Engine Control Module (ECU) | GEN 5 GDI Please include engine serial number, hours, and number of starts in the notes on your order. ***Since this ECU is custom programmed off the engine serial number you provide, it is NOT returnable for...
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    $1,699.99
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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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  • Indmar Complete Gasket Kit - 5.7L Vortec MPI

    Indmar Complete Gasket Kit - 5.7L Vortec MPI

    Indmar
    $499.99
    Indmar Complete Gasket Kit - 5.7L Vortec MPI INDMAR 5.7 GASKET SET INCLUDES GASKETS AND SEALS:INTAKE, RISERS, WATER PUMP, VALVE COVERS, HEAD, OIL DRAIN, THERMOSTAT UPPER AND LOWER, REAR SEAL AND RETAINER, OIL PAN, THROTTLE BODY, INTAKE TO PLENUM, FRONT...
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    $499.99
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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.  
    Qty in Cart: 0
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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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  • Indmar 350 Exhaust Manifold Indmar 350 Exhaust Manifold (No-Name)

    Indmar 350 Exhaust Manifold

    Indmar
    $799.99
    Indmar 350 Exhaust Manifold  CHEVROLET SMALL BLOCK CENTER RISER EXHAUST MANIFOLD Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $799.99
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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.