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 Fulton Trailer Winch

    MasterCraft Fulton Trailer Winch

    $304.99
    MasterCraft Trailer Winch Replace your worn or broken MasterCraft trailer winch (works for many other trailers too). This is a 1800lb Fulton XLT Series winch. Features an efficient gear ratio, full length drum bearings, oil impregnated shaft bushing and...
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    $304.99
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  • Ilmor Knock Sensor w/Bolt | 1015 Ilmor Knock Sensor w/Bolt | 1015

    Ilmor Knock Sensor w/Bolt | 1015

    Ilmor
    $29.99
    Ilmor Knock Sensor w/Bolt | 1015 Ilmor Knock Sensor for MasterCraft boats. Specifically designed by Ilmor and MasterCraft for 5.7L 6.0L 6.2L Ilmor engines.  Made with high-quality materials that ensure OEM specified performance.  Use the boat part...
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    $29.99
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  • MasterCraft Muffler | 3" Straight 42" MasterCraft Muffler | 3" Straight 42"

    MasterCraft Muffler | 3" Straight 42"

    MasterCraft
    $249.99
    MasterCraft Muffler 3" Straight 42" This is a genuine replacement fiberglass muffler for many MasterCraft boats. This muffler was typically used in direct drive boats made from 1979 to 1982 and features a 3" in and out with an average overall length of...
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    $249.99
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  • MasterCraft Circuit Breaker 10 Amp

    MasterCraft Circuit Breaker 10 Amp

    MasterCraft
    MSRP: $19.99
    $16.99
    MasterCraft Circuit Breaker 10 Amp Genuine MasterCraft boats 10 Amp circuit breaker. This marine circuit breaker is ignition protected for use in many marine applications. Features screw top installation with a two prong input. Midwest MasterCraft...
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    MSRP: $19.99
    $16.99
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  • Log Shaft Packing For 1" Drive Shaft Log Shaft Packing For 1" Drive

    Log Shaft Packing For 1" Drive Shaft

    $4.99
    Log Shaft Packing For 1" Drive Shaft Wax impregnated rope for drive shaft and rudder stuffing boxes. Each piece is 1/4" diameter and 4.5" long. The 1/4" shaft packing is designed for boats with a 1" drive shaft which is commonly found on 2002 and older...
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    $4.99
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  • Indmar/PCM Ford 351 HO 285 HP Spark Plugs

    MasterCraft Boats Engine Spark Plug Set (Ford HO High Output Engine)

    Indmar
    MSRP: $59.99
    $54.99
    Indmar/PCM Ford 351 HO 285 HP Spark Plugs Fits all HO Ford 351w engines like 285 HP Indmar 5.8, PCM Pro Boss GT-40, etc. with GT-40 heads. Set of 8. Specs; Plug gap .035".Please note: No returns will be accepted on installed MasterCraft parts. Use the...
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    MSRP: $59.99
    $54.99
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  • Steering Cable Adapter

    Steering Cable Adapter for Rotary Cables

    SeaStar Solutions
    $32.99
    Steering Cable Adapter This steering cable adapter is REQUIRED when installing a new rotary Steering cable in Select MasterCraft boats produced from 1991 to 1999. Use the boat part look up below to ensure you are purchasing the correct part for your boat...
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    $32.99
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  • Ilmor 95 Amp Alternator | PV06102 Ilmor 95 Amp Alternator | PV06102

    Ilmor 95 Amp Alternator | PV06102

    Ilmor
    $424.99
    Ilmor 95 Amp Alternator | PV06102 Ilmor 95 Amp Alternator with pulley is manufactured to provide superior quality, industry-leading coverage, and extreme durability. Designed to withstand the extreme electrical rigors demanded from today’s...
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    $424.99
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  • MasterCraft Tower Navigation Light Tower Navigation Light for 2010 and 2011 MasterCraft Towers

    Tower Navigation Light for 2010 and 2011 MasterCraft Towers

    MasterCraft
    $51.99
    MasterCraft Tower Navigation Light Replacement MasterCraft Tower Navigation Light for use on many 2010 and newer MasterCraft Wakeboard towers including those with a tower mounted camera. This is an exact fit meaning it's a quick and easy repair. This...
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    $51.99
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  • 19' MasterCraft Steering Cable

    19' Steering Cable

    SeaStar Solutions

    $249.99
    19' MasterCraft Steering Cable When the steering on your boat gets stiff it's time to replace the steering cable. This 19' MasterCraft Steering Cable is a direct replacement for Many MasterCraft boats produced from 1999 to 2012. A new steering cable...
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    $249.99
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  • Gas Shock 40# Observers Seat Lift Back

    Gas Shock 40# Observers Seat Lift Back

    MasterCraft

    MSRP: $19.99
    $18.99
    Gas Shock 40# Observers Seat Lift Back Gas strut from MasterCraft Boats used on ProStar 190, 197 214 and 214V observer seats. This gas shock is also used on MasterCraft X-7, X-14 and X-14V observer seats. Gas shock measures 15" in length and features...
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    MSRP: $19.99
    $18.99
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  • 1.25" Wire Reinforced Hose

    1.25" Wire Reinforced Hose Per Foot

    Hannays
    $13.00
    1.25" Wire Reinforced Hose This 1.25" wire reinforced hose is commonly found on marine engines and can be used in water or exhaust situations. This hose is reinforced with wire helix imbedded between plies of HD synthetic cord. It is resistant to exhaust...
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    $13.00
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  • MasterCraft OEM Rudder - 176 MasterCraft OEM Rudder - 176

    MasterCraft OEM Rudder - 176

    MasterCraft
    $599.99
    MasterCraft OEM Rudder- 176 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 and...
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    $599.99
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  • MasterCraft MMDC Box Mini M3 '08-'09 VDIG Only

    MasterCraft MMDC Box Mini M3 '08-'09 VDIG Only

    MasterCraft
    $3,999.99
    MasterCraft MMDC Box Mini M3 VDIG '08-'09 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...
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    $3,999.99
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  • MasterCraft Replacement Exhaust Tip MasterCraft Exhaust Tip Replacement

    MasterCraft Exhaust Tip Replacement

    MasterCraft
    MSRP: $79.99
    $74.99
    MasterCraft Replacement Exhaust Tip This is a genuine replacement stainless steel exhaust tip for MasterCraft X-14V and ProStar 214V boats. Replace your blown out exhaust tip with this factory replacement. Includes new tip and two stainless steel rivets...
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    MSRP: $79.99
    $74.99
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  • Prestolite Distributor Rotor (1987 & newer)

    Rotor (87-Up) Ford and GM

    Indmar
    $34.99
    Prestolite Distributor Rotor (1987 & newer) Fits Ford and GM based V8 engines 1987 and newer with a Prestolite distributor. This is the Rotor only. These engines were used by MasterCraft, Malibu, Supra and Moomba boats. Note: There were a FEW 1987...
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    $34.99
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  • MasterCraft ProStar Seat Base Latch MasterCraft ProStar Seat Base Latch

    MasterCraft ProStar Seat Base Latch

    MasterCraft
    $73.99
    MasterCraft ProStar Seat Base Latch This is a direct replacement seat base storage latch for many of the MasterCraft ProStar boats with a square latch. This part includes spare keys, latch and nylock nut. Keep your MasterCraft boat looking in peak...
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    $73.99
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  • Indmar Oil Pressure Sender Indmar Oil Pressure Sender

    Indmar Oil Pressure Sender

    Indmar

    $199.99
    Indmar Oil Pressure Sender Genuine Indmar Oil Pressure Sender. This part is commonly found in Indmar engines in MasterCraft, Malibu, Supra and Moomba boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat...
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    $199.99
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  • Gas Shock 40# Motorbox and Ski Locker

    Gas Shock 40# Motorbox and Ski Locker

    MasterCraft
    $33.99
    Gas Shock 40# Motorbox and Ski Locker Gas strut from MasterCraft Boats used on many MasterCraft boats motorbox and engine covers as well as observers seats. This gas shock is designed to hold up the motorbox cover on your boat. This gas shock has 40lbs...
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    $33.99
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  • Exhaust Flap 3", 3.5", & 4" Exhaust Flap 3"/3.5"/4"

    Exhaust Flap 3"/3.5"/4"

    Skiers Choice
    $19.99
    Exhaust Flap 3"/3.5"/4" This is a 4" Exhaust Flap. It can be cut to fit 3" and 3.5" flanges. The 3" and 3.5" flaps are no longer made.This is sold individually. 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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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.