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 Swim Platform Pins Swim Platform Pins

    Swim Platform Pins

    JR Products
    MSRP: $5.99
    $4.99
    MasterCraft Swim Platform Pins These replacement pins for your removable or folding MasterCraft swim platform are the perfect option whether yours are worn or at the bottom of the lake. These pins have a 1/4" diameter and a 1 3/8" usable length. Zinc...
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    MSRP: $5.99
    $4.99
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  • Ilmor Oil Pressure Sensor | 1013 Ilmor Oil Pressure Sensor | 1013

    Ilmor Oil Pressure Sensor | 1013

    Ilmor
    $105.99
    Ilmor Oil Pressure Sensor | MV8V-1013 Ilmor Oil Pressure Sensor for MasterCraft boats. Specifically designed by Ilmor and MasterCraft for Ilmor engines. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $105.99
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  • Rotor GM Gen 2 HEI Distributor

    Rotor GM Gen 2 HEI Distributor

    $14.99
    Rotor GM Gen 2 HEI Distributor Fits GM based engines using Delco HEI Distributor Rotor. Generally, from 1994 to 2004. Like Indmar 5.7 310hp carb., MasterCraft TBI, early MasterCraft MCX, Malibu Monsoon, Assault, Apex, Pro Ski EFI. Rotor only.These...
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    $14.99
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  • MasterCraft Muffler | 3.5" In w/30° Angle - 3.5" Out w/80° Angle -Vertical MasterCraft Muffler | 3.5" In w/30° Angle - 3.5" Out w/80° Angle -Vertical

    MasterCraft Muffler | 3.5" In w/30° Angle - 3.5" Out w/80° Angle -Vertical

    MasterCraft
    $599.99
    MasterCraft Muffler | 3.5" In w/30° Angle - 3.5" out w/80° Angle - Vertical This is a genuine replacement fiberglass muffler for many MasterCraft boats. This muffler was typically used in V-drive boats made from 2009 to 2011 and features a 3.5"...
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    $599.99
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  • MasterCraft Trailer Winch Strap MasterCraft Trailer Winch Strap

    MasterCraft Trailer Winch Strap

    MasterCraft
    $32.99
    MasterCraft Trailer Winch Strap Replace your worn or broken trailer winch strap with this 2" x 20' strap with eye hook. Works with most winches including those on MasterCraft trailers. Includes bow eye hook. Breaking strength: 4000lb/1814kgWorking Load...
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  • Sale 11%
    Babes Odor Oust 16oz

    Babes Odor Oust 16oz

    Babes Boat Care
    $10.00
    $8.90
    BABE'S Odor Oust Odor Neutralizer BABE'S Odor Oust is designed to eliminate odors, not cover them up. The odor neutralizers in Odor Oust bind with odor molecules to remove them from the air. The light fragrance in Odor Oust leaves a fresh scent. Odor...
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    $10.00
    $8.90
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  • MasterCraft MDC Box (1999 - 2001) MasterCraft OEM MDC Box all Models 1999-2001

    MasterCraft OEM MDC Box all Models 1999-2001

    MasterCraft
    $999.99
    MasterCraft MDC Box (1999 - 2001) Are all of your gauges not working after the winter or a cold snap in your 1999 to 2001 MasterCraft Boat? Your MDC box is most likely the problem. Replace your MasterCraft MDC Box and get everything back to working! This...
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    $999.99
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  • Gas Shock 30# Sun Deck and Engine Cover

    Gas Shock 30# Sun Deck and Engine Cover

    MasterCraft

    MSRP: $19.99
    $12.99
    Gas Shock 30lb Sun Deck and Engine Cover Gas shock from MasterCraft Boats used on several MasterCraft boats for the Sun Deck, and on many boats from 1991-1997 for the Engine Cover. This gas shock has 30lbs of pressure and measures 20" in length.This...
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    MSRP: $19.99
    $12.99
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  • Fly High Stainless Steel Pylon Extension 1 Fly High Stainless Steel Pylon Extension 2

    Fly High Stainless Steel Pylon Extension

    Fly High
    $1,053.99
    Fly High Stainless Steel Pylon Extension If you have a direct drive boat that you want to outfit for better wakeboarding, the Fly High Stainless Steel Extended Pylon is the best pylon extension money can buy. This pylon extension also features a slalom...
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    $1,053.99
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  • Indmar Thermostat Gasket

    Indmar Thermostat Gasket 3 Bolt Older Style

    Indmar
    $5.00
    Indmar Thermostat Gasket This thermostat gasket is commonly used on many late 80's to early 90's Indmar engines. This gasket measures 3 3/8" across (at the widest point) and 4 1/4" long. This part is commonly found in MasterCraft, Supra, Moomba and Malbu...
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    $5.00
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  • GM Pre-Vortec Marine Spark Plugs

    GM Pre-Vortec Marine Spark Plugs

    $47.99
    GM Pre-Vortec Marine Spark Plugs Fits GM based pre-Vortec engines used by Indmar and PCM from 1997 and earlier. Carbureted and EFI's. These engines were run in many MasterCraft, Supra, Moomba and Malibu boats. Midwest MasterCraft is proud to offer tune...
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    $47.99
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  • Indmar Distributor Cap GM Gen 2 HEI

    Indmar Distributor Cap GM Gen 2 HEI

    $45.99
    Indmar Distributor Cap GM Gen 2 HEI The Indmar Distributor Cap GM Gen 2 HEI fits GM based engines using Delco Gen 2 HEI distributor. Generally, from 1994 to 2004. Like Indmar 5.7 310hp carb., TBI, early MCX, Monsoon, Assault, Apex, Pro Ski EFI. Has brass...
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    $45.99
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  • MasterCraft Exhaust Flap Retainer

    MasterCraft Exhaust Flap Retainer

    MasterCraft
    $23.99
    Exhaust Flap Retainer This is a Exhaust Flap Retainer. This retainer is designed to fit a 3.5" Exhaust Flap. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $23.99
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  • Ilmor Raw Water Pump Impeller (Closed Cooled and 7.4L)

    Ilmor Raw Water Impeller | PV06765

    Ilmor
    $64.99
    Ilmor Raw Water Pump Impeller (Closed Cooled and 7.4L) This Ilmor genuine impeller kit is made from top quality materials specifically formulated to provide peak performance for use in your Ilmor engine. Kit includes: impeller, gasket and o-ring. ...
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    $64.99
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  • MasterCraft Rear Storage Bin Rear Storage Bin

    Rear Storage Bin

    MasterCraft
    $199.99
    MasterCraft Rear Storage Bin This is a MasterCraft factory replacement plastic storage bin normally found under the rear center seat of many older MasterCraft boats. This is a molded plastic storage bin sometimes referred to as a cooler. the Upper "lip"...
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    $199.99
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  • MasterCraft Trailer Lights LED (Red)

    MasterCraft Trailer Lights (Red)

    MasterCraft
    MSRP: $34.99
    $19.99
    MasterCraft Trailer Lights LED (Red) ***LIGHT ONLY, NO GROMMET INCLUDED*** MasterCraft LED Trailer Lights will not only outlast the traditional style they are brighter providing a safer driving experience both night and day. In addition, LED lights run...
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    MSRP: $34.99
    $19.99
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  • PCM Fuel Pump Assembly for Ford 302 and 351 PCM Fuel Pump Assembly for Ford 302 and 351

    PCM Fuel Pump Assembly for Ford 302 and 351

    PCM
    $229.99
    PCM Fuel Pump Assembly for Ford 302 and 351 Bring your engine back to peak performance with this PCM Fuel Pump for your 302 or 351 Ford engine. Worn fuel pumps rob power from your boat especially at high RPM's so help out your MasterCraft or Correct...
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    $229.99
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  • MasterCraft MMDC Box Mini M2

    MasterCraft MMDC Box Mini M2

    $3,999.99
    MasterCraft MMDC Box Mini M2 '07 Gauges not working after the winter or a cold snap? Your MMDC box is most likely the problem. Replace your MasterCraft MMDC Box and get everything back to working! This is an OEM MasterCraft specific part. ***Installed...
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    $3,999.99
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  • Rotor (86-Older) Prestolite

    Rotor (86-Older) Prestolite

    Indmar
    $16.99
    Rotor (86-Older) Prestolite Fits Ford and GM based V8 engines 1986 and older with a Prestolite distributor. Rotor only.Note: There were a FEW 1987 boats built that had the "old" CLIP-ON type distributor cap still.Please note: No returns will be accepted...
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    $16.99
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  • Indmar 160 Degree Thermostat LT1 Indmar 160 Degree Thermostat LT1

    Indmar 160 Degree Thermostat LT1

    Indmar
    $62.99
    Indmar 160 Degree Thermostat LT1 Indmar 160 degree thermostat for Corvette LT-1 engines. This thermostat features two small holes that are drilled through to allow air to pass through the thermostat. This is the thermostat which is located in the LT-1...
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    $62.99
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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.