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 Gauge - Fuel

    MasterCraft Gauge - Fuel

    MasterCraft
    $749.99
    MasterCraft Gauge - Fuel MasterCraft Gauge - Fuel. White face with chrome bezel. 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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    $749.99
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  • MasterCraft Gauge - Voltage

    MasterCraft Gauge - Voltage

    MasterCraft
    $699.99
    MasterCraft Gauge - Voltage MasterCraft Gauge - Voltage. White face with chrome bezel. 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 Gauge - Oil Pressure

    MasterCraft Gauge - Oil Pressure

    MasterCraft
    $929.99
    MasterCraft Gauge - Oil Pressure MasterCraft Gauge - Oil Pressure. White face with chrome bezel. 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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    $929.99
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  • MasterCraft Gauge - Temperature

    MasterCraft Gauge - Temperature

    MasterCraft
    $929.99
    MasterCraft Gauge - Temperature MasterCraft Gauge - Temperature. White face with chrome bezel. 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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    $929.99
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  • Moomba OZ Tower Pivot Bolt

    Moomba OZ Tower Pivot Bolt

    Skiers Choice
    $39.99
    Moomba OZ Tower Pivot Bolt  Genuine Moomba OZ tower pivot bolt.
    Qty in Cart: 0
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    $39.99
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  • Skier's Choice Thru-Hull Fitting - 1" Straight

    Skier's Choice Thru-Hull Fitting - 1" Straight

    Skiers Choice
    $4.99
    Skier's Choice Thru-Hull Fitting - 1" Straight This fitting is used on Skier's Choice boats for the ballast thru-hull on the side of the boat. Color is black. 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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    $4.99
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  • Skier's Choice Thru-Hull Fitting - 3/4" Straight

    Skier's Choice Thru-Hull Fitting - 3/4" Straight

    Skiers Choice
    $4.99
    Skier's Choice Thru-Hull Fitting - 3/4" Straight This fitting is used on Skier's Choice boats for the ballast and bilge thru-hull on the side of the boat. Color is black. Use the boat part look up below to ensure you are purchasing the correct part for...
    Qty in Cart: 0
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    $4.99
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  • MasterCraft Swim Platform Brackets - 530381

    MasterCraft Swim Platform Brackets - 530381

    MasterCraft
    $639.99
    MasterCraft Swim Platform Brackets - 530381 These are OEM MasterCraft swim platform brackets. Set includes 4 pieces total. 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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    $639.99
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  • MasterCraft Gauge - Tach/Hour Meter

    MasterCraft Gauge - Tach/Hour Meter

    MasterCraft
    $1,499.99
    MasterCraft Gauge - Tach/Hour Meter MasterCraft Gauge - Tach/Hour Meter. White face with chrome bezel. 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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    $1,499.99
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  • MasterCraft Swim Platform Brackets - 530379

    MasterCraft Swim Platform Brackets - 530379

    MasterCraft
    $678.99
    MasterCraft Swim Platform Brackets - 530379 These are OEM MasterCraft swim platform brackets. Set includes 4 pieces total.***PLATFORM PINS NOT INCLUDED*** 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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    $678.99
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  • MasterCraft Tapered Tower Knob 2005-2006 MasterCraft Tapered Tower Knob 2005-2006

    MasterCraft Tapered Tower Knob 2005-2006

    MasterCraft
    $189.99
    MasterCraft Tapered Tower Knob 2005-2006 Genuine MasterCraft tower knob. This knob is designed for 2005-2006 towers. Solid metal construction for long lasting durability. This MasterCraft tower knob is designed to tighten by hand and features a textured...
    Qty in Cart: 0
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    $189.99
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  • Fuel Pump Harness for Millenium Fuel Pumps

    Fuel Pump Harness for Millenium Fuel Pumps

    MasterCraft
    $104.99
    Fuel Pump Harness for Millenium Fuel Pumps This harness is needed when replacing the old Carter/Federal-Mogul fuel pump with the new Millenium fuel pump. 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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    $104.99
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  • Johnson Bilge Pump 90* Fitting

    Johnson Bilge Pump 90* Fitting

    MasterCraft
    $4.99
    Johnson Bilge Pump 90* Fitting This fitting threads on to the red Johnson Bilge Pumps used in MasterCraft Boats. 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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    $4.99
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  • Johnson Bilge Pump Straight Fitting

    Johnson Bilge Pump Straight Fitting

    MasterCraft
    $5.99
    Johnson Bilge Pump Straight Fitting This fitting threads on to the red Johnson Bilge Pumps used in MasterCraft Boats. 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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    $5.99
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  • MasterCraft Triducer - Speed/Depth/Temp

    MasterCraft Triducer - Speed/Depth/Temp

    MasterCraft
    $749.99
    MasterCraft Triducer - Speed/Depth/Temp This is the OEM MasterCraft Boats. Please use the boat part look up below to ensure you have the correct part for your year, make, and model.  
    Qty in Cart: 0
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    $749.99
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  • MasterCraft Trailer Marker Light - Red

    MasterCraft Trailer Marker Light - Red

    Hannays
    $10.99
    MasterCraft Trailer Marker Light - Red These are a plug and play design with no extra wiring needed. Simply unplug your old lights and pop these ones in.   Sold individually.   ***LIGHT ONLY - DOES NOT INCLUDE WIRING OR RUBBER GROMMET*** Use...
    Qty in Cart: 0
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    $10.99
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  • Moomba Platform Pad - Aqua Trac

    Moomba Platform Pad - Aqua Trac

    Moomba Boats
    $374.99
      Moomba Platform Pad - Aqua Trac Moomba Aqua Trac platform pad for Moomba Surf Platform. 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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    $374.99
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  • Sea Strainer - Bowl Gasket Only

    Sea Strainer - Bowl Gasket Only

    MasterCraft
    $14.99
    Sea Strainer - Bowl Gasket Only Sea Strainer - Bowl Gasket Only for the Marelon "T" Style strainer.
    Qty in Cart: 0
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    $14.99
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  • Sea Strainer - Bowl Only

    Sea Strainer - Bowl Only

    MasterCraft
    $95.99
    Sea Strainer - Bowl Only Sea Strainer - Bowl Only for the Marelon "T" Style strainer.
    Qty in Cart: 0
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    $95.99
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  • MasterCraft Sea Strainer - "T" Style Marelon

    Sea Strainer - "T" Style Marelon w/Chem Resistant Bowl

    MasterCraft
    $159.99
    Sea Strainer - "T" Style Marelon w/Chem Resistant Bowl Sea Strainer - "T" Style Marelon w/Chem Resistant Bowl used on MasterCraft boats from 2014 and newer.
    Qty in Cart: 0
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    $159.99
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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.