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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  • Tower Navigation Light Lens Cap Tower Navigation Light Lens Cap
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    Navigation Light Lens Cap

    MasterCraft

    MSRP: $19.99
    $14.99
    MasterCraft Tower Navigation Light Cap Replacement MasterCraft Tower Navigation Light Lens Cap for use on MasterCraft towers.  No matter what the reason you tell your buddies as to why the lens cap is missing you need to replace it. This is an exact...
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    MSRP: $19.99
    $14.99
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  • MasterCraft Gauge - Tach White 2006
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    MasterCraft Gauge - Tach White 2006

    MasterCraft
    $1,499.99
    MasterCraft Gauge - Tach White 2006 MasterCraft Gauge - Tach. White face. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $1,499.99
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  • OJ SKIPRO Prop 13.9X14.25-4 Blade | Splined | Bore 1 1/8" | LH
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    OJ SKIPRO Prop 13.9X14.25-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $660.00
    $561.00
    OJ SKIPRO Prop 13.9X14.25-4 Blade | Splined | Bore 1 1/8" | LH The OJ SKIPRO V-4 1709 4 Blade 13.9" X 14.25" LH-4 BLADE SPLINED BORE Propeller features a new blade shape and pitch distribution along with OJ's unique cupping feature for better top end...
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    MSRP: $660.00
    $561.00
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  • OJ SKIPRO Prop 14X13.5-3 Blade | Splined | Bore 1 1/8" | LH
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    OJ SKIPRO Prop 14X13.5-3 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $605.00
    $514.25
    OJ SKIPRO Prop 14X13.5-3 Blade | Splined | Bore 1 1/8" | LH The OJ SKIPRO V-3 867 3 Blade 14" X 13.5" LH-3 BLADE SPLINED BORE Propeller boasts an enhanced pitch distribution along with a new blade shape that produces better top end and low end power. Use...
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    MSRP: $605.00
    $514.25
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  • OJ Evolution Prop 18X17.5-4 Blade | Splined | Bore 1 1/4" | LH
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    OJ Evolution Prop 18X17.5-4 Blade | Splined | Bore 1 1/4" | LH

    OJ Props
    MSRP: $1,173.00
    $997.05
    OJ Evolution Prop 18X17.5-4 Blade | Splined | Bore 1 1/4" | LH The OJ Evolution 3602-MF 4 Blade 18" X  17.5" LH 4-BLADE SPLINED BORE Propeller features a complete blade shape and pitch distribution redesign. Evolving from our successful WAKEPRO and...
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    MSRP: $1,173.00
    $997.05
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  • OJ Evolution Prop 15X12-4 Blade | Splined | Bore 1 1/8" | LH
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    OJ Evolution Prop 15X12-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $853.00
    $725.05
    OJ Evolution Prop 15X12-4 Blade | Splined | Bore 1 1/8" | LH The OJ Evolution 3043-MF 4 Blade 15" X  12" LH 4-BLADE SPLINED BORE Propeller features a complete blade shape and pitch distribution redesign. Evolving from our successful WAKEPRO and V-4...
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    MSRP: $853.00
    $725.05
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  • OJ Evolution Prop 15X13-4 Blade | Splined | Bore 1 1/8" | LH
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    OJ Evolution Prop 15X13-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $853.00
    $725.05
    OJ Evolution Prop 15X13-4 Blade | Splined | Bore 1 1/8" | LH The OJ Evolution 3033-MF 4 Blade 15" X 13" LH 4-BLADE SPLINED BORE Propeller features a complete blade shape and pitch distribution redesign. Evolving from our successful WAKEPRO and V-4...
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    MSRP: $853.00
    $725.05
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  • OJ Evolution Prop 17.5X16.5-4 Blade | Splined | Bore 1 1/8" | LH
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    OJ Evolution Prop 17.5X16.5-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,128.00
    $958.80
    OJ Evolution Prop 17.5X16.5-4 Blade | Splined | Bore 1 1/8" | LH The OJ Evolution 3028-MF 4 Blade 17.5" X 16.5" LH 4-BLADE SPLINED BORE Propeller features a complete blade shape and pitch distribution redesign. Evolving from our successful WAKEPRO and...
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    MSRP: $1,128.00
    $958.80
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  • OJ Evolution Prop 16.5X15-4 Blade | Splined | Bore 1 1/8" | LH
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    OJ Evolution Prop 16.5X15-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,079.00
    $917.15
    OJ Evolution Prop 16.5X15-4 Blade | Splined | Bore 1 1/8" | LH The OJ Evolution 3027-MF 4 Blade 16.5" X 15" LH 4-BLADE SPLINED BORE Propeller features a complete blade shape and pitch distribution redesign. Evolving from our successful WAKEPRO and V-4...
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    MSRP: $1,079.00
    $917.15
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  • OJ Evolution Prop 15X15.25-4 Blade | Splined | Bore 1 1/8" | LH
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    OJ Evolution Prop 15X15.25-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $853.00
    $725.05
    OJ Evolution Prop 15X15.25-4 Blade | Splined | Bore 1 1/8" | LH The OJ Evolution 3025-MF 4 Blade 15" X 15.25" LH 4-BLADE SPLINED BORE Propeller features a complete blade shape and pitch distribution redesign. Evolving from our successful WAKEPRO and V-4...
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    MSRP: $853.00
    $725.05
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  • OJ Evolution Prop 16.5X17-4 Blade | Splined | Bore 1 1/8" | LH
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    OJ Evolution Prop 16.5X17-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,079.00
    $917.15
    OJ Evolution Prop 16.5X17-4 Blade | Splined | Bore 1 1/8" | LH The OJ Evolution 3009-MF 4 Blade 16.5" X 17" LH 4-BLADE SPLINED BORE Propeller features a complete blade shape and pitch distribution redesign. Evolving from our successful WAKEPRO and V-4...
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    MSRP: $1,079.00
    $917.15
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  • OJ Evolution Prop 18X16-4 Blade | Splined | Bore 1 1/8" | LH
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    OJ Evolution Prop 18X16-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $1,173.00
    $997.08
    OJ Evolution Prop 18X16-4 Blade | Splined | Bore 1 1/8" | LH The OJ Evolution 3007-MF 4 Blade 18" X 16" LH 4-BLADE SPLINED BORE Propeller features a complete blade shape and pitch distribution redesign. Evolving from our successful WAKEPRO and V-4...
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    MSRP: $1,173.00
    $997.08
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  • Quick view

    Bimini Canvas Only w/Boot (Black) - ZFT4 XSTAR

    MasterCraft
    $999.99
    Bimini Canvas Only w/Boot (Black) - ZFT4 XSTAR Bimini Canvas Only w/Boot. Black in color. For ZFT4 Tower XSTAR. ***Please call or email us with your boat Hull ID Number to verify fit***This canvas is made to order from MasterCraft. All canvas order take...
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    $999.99
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  • OJ Evolution Prop 13X15-4 Blade | Splined | Bore 1 1/8" | LH
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    OJ Evolution Prop 13X15-4 Blade | Splined | Bore 1 1/8" | LH

    OJ Props
    MSRP: $613.00
    $521.05
    OJ Evolution Prop 13X15-4 Blade | Splined | Bore 1 1/8" | LH The OJ Evolution 3024-MF 4 Blade 13" X 15" LH 4-BLADE SPLINED BORE Propeller features a complete blade shape and pitch distribution redesign. Evolving from our successful WAKEPRO and V-4...
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    MSRP: $613.00
    $521.05
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  • Moomba +Heater Blower Motor
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    Moomba +Heater Blower Motor

    Skiers Choice
    $329.99
    Moomba +Heater Blower Motor This is the OEM replacement +Heater Blower Motor for 2010-2021 Moomba's with a heater. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $329.99
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  • Moomba Mojo Pro Platform Pad - 2017
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    Moomba Mojo Pro Platform Pad - 2017

    Moomba Boats
    $749.99
    Moomba Mojo Pro Platform Pad - 2017 Moomba Platform Non-Skid. Grey Color. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    $749.99
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  • Closeout
    MasterCraft Viper/Clarion Interface 09-11
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    Closeout

    MasterCraft Viper/Clarion Interface 09-11

    MasterCraft
    MSRP: $549.99
    $299.99
    MasterCraft Viper/Clarion Interface 09-11 MasterCraft Viper/Clarion Interface 09-11. ***All Closeout item sales are final. No returns/refunds/exchanges.***    
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    MSRP: $549.99
    $299.99
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  • Closeout
    MasterCraft Viper Module - No Nav 10-11
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    Closeout

    MasterCraft Viper Module - No Nav 10-11

    MasterCraft
    MSRP: $6,999.99
    $1,299.99
    MasterCraft Viper Module - No Nav 10-11 MasterCraft Viper Module - No Nav 10-11. ***All Closeout item sales are final. No returns/refunds/exchanges.***    
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    MSRP: $6,999.99
    $1,299.99
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  • Closeout
    MasterCraft Gauge - Temp Redline Dial 2 MasterCraft Gauge - Temp Redline Dial 2
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    Closeout

    MasterCraft Gauge - Temp Redline Dial 2

    MasterCraft
    MSRP: $399.99
    $249.99
    MasterCraft Gauge - Temp Redline Dial 2 MasterCraft Gauge - Temp 2. Redline Dial face. ***All Closeout item sales are final. No returns/refunds/exchanges.***    
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    MSRP: $399.99
    $249.99
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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 and fast shipping. 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.