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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  • OJ Prop 16X13-4 Blade | Keyed | Bore 1 1/8" | LH (960-MF)

    OJ Prop 16X13-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16X13-4 Blade | Keyed | Bore 1 1/8" | LH By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new blade...
    Qty in Cart: 0
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    MSRP: $1,048.00
    $917.15
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  • OJ Prop 16X17-4 Blade | Keyed | Bore 1 1/8" | LH (967-MF)

    OJ Prop 16X17-4 Blade | Keyed | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,048.00
    $917.15
    OJ Prop 16X17-4 Blade | Keyed | Bore 1 1/8" | LH By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new blade...
    Qty in Cart: 0
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    MSRP: $1,048.00
    $917.15
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  • Indmar Wix Oil Filter | 57060

    Indmar
    $12.99
    Indmar Wix Oil Filter | 57060   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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    $12.99
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  • Indmar Wix Oil Filter | 51061

    Indmar
    $14.99
    Indmar Wix Oil Filter | 51061   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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    $14.99
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  • Supra | Moomba Tracking Fin | 296 Supra | Moomba Tracking Fin | 296

    Supra | Moomba Tracking Fin | 296

    Skiers Choice
    $299.99
    Supra | Moomba Tracking Fin 113296 If you got yourself into a shallow spot on the lake and bent your tracking fin this is a OEM Supra and Moomba Replacement.  Fin, Tracking, 11-9/16 Long Use the Boat Part Lookup to ensure you are getting...
    Qty in Cart: 0
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    $299.99
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  • Supra | Moomba Rudder Assembly | 080

    Supra | Moomba Rudder Assembly | 080

    Skiers Choice
    $1,099.99
    Supra | Moomba Rudder Assembly | 117080 This is a complete rudder and rudder port assembly for Supra and Moomba Boats. Rudder Assembly Kit 105 degree, with tuning bar. Use the Boat Part Lookup to ensure you are getting the correct part for your...
    Qty in Cart: 0
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    $1,099.99
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  • Supra | Moomba Rudder Assembly | 202

    Supra | Moomba Rudder Assembly | 202

    Skiers Choice
    $1,849.99
    Supra | Moomba Rudder Assembly | 115202 This is a complete rudder and rudder port assembly for Supra and Moomba Boats. Rudder Assembly Kit 105 degree, no tuning wing. Use the Boat Part Lookup to ensure you are getting the correct part for your Supra...
    Qty in Cart: 0
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    $1,849.99
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  • Supra | Moomba Rudder Assembly | 135 (113135) Supra | Moomba Rudder Assembly | 135 (113135)

    Supra | Moomba Rudder Assembly | 135

    Skiers Choice
    $1,399.99
    Supra | Moomba Rudder Assembly | 113135 This is a complete rudder and rudder port assembly for Supra and Moomba Boats. Rudder Assembly Kit. Use the Boat Part Lookup to ensure you are getting the correct part for your Supra and Moomba Boat.  
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    $1,399.99
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  • Supra | Moomba Rudder Assembly | 281

    Supra | Moomba Rudder Assembly | 281

    Skiers Choice
    $699.99
    Supra | Moomba Rudder Assembly | 108281 This is a complete rudder and rudder port assembly for Supra and Moomba Boats. Rudder Assembley Kit, Large (V Drive) Use the Boat Part Lookup to ensure you are getting the correct part for your Supra and Moomba...
    Qty in Cart: 0
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    $699.99
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  • Supra | Moomba Strut - 15 deg. 1 1/8" | 127

    Supra | Moomba Strut - 15 deg. 1 1/8" | 127

    Skiers Choice
    $399.99
    Supra | Moomba Strut-15 Degree 1 1/8" | 117127 This is a 15 Degree Strut for a 1 1/8" shaft for Supra and Moomba Boats. Use the Boat Part Lookup to ensure you are getting the correct part for your Supra and Moomba Boat.  
    Qty in Cart: 0
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    $399.99
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  • Supra | Moomba Strut - 14 deg. 1" | 030 (101030)

    Supra | Moomba Strut - 14 deg. 1" | 030

    Skiers Choice
    $424.99
    Supra | Moomba Strut-14 Degree 1" | 101030 This is a 14 Degree Strut for a 1" shaft for Supra and Moomba Boats. Use the Boat Part Lookup to ensure you are getting the correct part for your Supra and Moomba Boat.  
    Qty in Cart: 0
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    $424.99
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  • Supra | Moomba Drive Shaft-48" | 100918

    Supra | Moomba Drive Shaft-48" | 100918

    Skiers Choice
    $599.99
    Supra | Moomba Drive Shaft-48" w/4 Coupler | 100918 This is a 48" Drive Shaft by 1" diameter for Supra and Moomba Boats. ***Skier’s Choice couplers are pressed onto the shaft and the assembly is CNC balanced to improve performance and reduce vibration...
    Qty in Cart: 0
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    $599.99
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  • Supra | Moomba Drive Shaft-54.75"x 1-1/8" | 855

    Skiers Choice
    $1,199.99
    Supra | Moomba Drive Shaft-54.75"x1-1/8" | 119855 This is a 54.75" Drive Shaft by 1-1/8" diameter for Supra and Moomba Boats. ***Skier’s Choice couplers are pressed onto the shaft and the assembly is CNC balanced to improve performance and reduce...
    Qty in Cart: 0
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    $1,199.99
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  • 22' Steering Cable

    22' Steering Cable

    Skiers Choice
    $299.99
    22' Steering Cable When the steering on your boat gets stiff it's time to replace the steering cable. This 22' Steering cable is a direct replacement for many Supra and Moomba boats. A new steering cable helps keep your boat operating in peak...
    Qty in Cart: 0
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    $299.99
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  • Ilmor Circulation Water Pump | PV08093

    Ilmor Circulation Water Pump | PV08093

    Ilmor
    $299.99
    Ilmor Circulation Water Pump | PV08093 ***Don't forget to order the 2 gaskets needed when replacing this pump*** The Ilmor Circulation Water Pump (part # PV08093) is designed as a direct replacement for OEM Ilmor marine engines—particularly the 5...
    Qty in Cart: 0
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    $299.99
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  • Ilmor Holder Strainer Wrench | 50G-0174

    Ilmor Holder Strainer Wrench | 50H-0174

    Ilmor
    $26.99
    Ilmor Holder Strainer Wrench | 50H-0174 The Ilmor raw water pump strainer wrench holder provides safe and secure storage for your wrench when not in use.  
    Qty in Cart: 0
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    $26.99
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  • Ilmor Ignition Knock Sensor | PV07167

    Ilmor Ignition Knock Sensor | PV07167

    Ilmor
    $34.99
    Ilmor Ignition Knock Sensor | PV07167 This sensor is designed to work as a direct replacement for your factory-installed engine knock sensor and is manufactured to exact factory specifications.
    Qty in Cart: 0
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    $34.99
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  • Ilmor Sea Strainer Basket | 50H-0073

    Ilmor Sea Strainer Basket | 50H-0073

    Ilmor
    $29.99
    Ilmor Sea Strainer Basket | 50H-0073 Replace your sea strainer basket with this genuine Ilmor replacement part. The basked provides the same quality and fit as the original Ilmor part you can trust.  
    Qty in Cart: 0
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    $29.99
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  • Ilmor Electric Throttle Body | 1016 (MV8V1016)

    Ilmor Electric Throttle Body | 1016

    Ilmor
    $499.99
    Ilmor Electric Throttle Body | 1016 Designed as an exact replacement for your factory-installed throttle body this quality Ilmor service part ensures your engine continues to have the same performance you expect out of Ilmor.  
    Qty in Cart: 0
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    $499.99
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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.