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 Courtesy Storage Light MasterCraft Courtesy Utility LED Light

    MasterCraft Courtesy Utility LED Light

    MSRP: $19.99
    $16.99
    MasterCraft Courtesy Storage Light Replacement interior storage and courtesy light for MasterCraft boats. This light uses a 2 hole bolt pattern for installation. Bright LED design features 3 LEDs. Commonly found in MasterCraft boats along the cup holder,...
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    MSRP: $19.99
    $16.99
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  • Ilmor Spark Iridium Plug Set (5.7L) | MV8V-1191 Ilmor Spark Iridium Plug Set (5.7L) | MV8V-1191

    Ilmor Spark Iridium Plug Set (5.7L) | 1191

    Ilmor
    $125.99
    Ilmor Spark Iridium Plug Set of 8 (5.7L) | MV8V-1191 Ilmor Spark Plug Set for MasterCraft boats. Specifically designed by Ilmor and MasterCraft for 5.7L Ilmor engines. Use the boat part look up below to ensure you are purchasing the correct part for your...
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    $125.99
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  • Indmar Circulating Water Pump GM LT1 Engines Circulating Water Pump GM LT1 Engines

    Circulating Water Pump GM LT1 Engines

    $299.99
    Indmar MasterCraft LT-1 Circulating Water Pump Water circulating pump for Indmar Corvette LT1 marine engines used in MasterCraft boat. Fits Indmar LT-1 engines used in MasterCraft boats from 1993 to 1999. Comes with mounting gaskets. Please note: No...
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  • MasterCraft Tower Fingers X-1

    MSRP: $170.00
    $169.99
    MasterCraft Tower Fingers X-1 MasterCraft Tower Fingers for '06 X-1 Please Note: All Wakeboard tower and tower accessories sales are final. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    MSRP: $170.00
    $169.99
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  • Circulating Water Pump for GM  5.0 and 5.7 Engines

    Circulating Water Pump GM Engines

    $204.99
    Circulating Water Pump for GM Engines This is a new circulating water pump for Indmar and PCM GM marine engines. This pump fits GM 5.0 and 5.7 Liter small block GM engines. This pump is Standard (LH) rotation. Comes with new mounting gaskets to ensure a...
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  • Ilmor Spark Iridium Plug Set Ilmor Spark Iridium Plug Set

    Ilmor Spark Iridium Plug Set | 1192

    Ilmor
    $125.99
    Ilmor Spark Iridium Plug Set of 8 | MV8V-1192 Ilmor Spark Plug Set for MasterCraft boats. Specifically designed by Ilmor and MasterCraft for 6.0L & 6.2L Ilmor engines. Use the boat part look up below to ensure you are purchasing the correct part for...
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  • Supra Boats Chrome Decal 59" Supra Boats Chrome Decal 59"

    Supra Boats Chrome Decal 59"

    Supra Boats
    $399.99
    Supra Boat Chrome Decal 59" Give your Supra Boat an updated look with the New OEM Chrome Decal. The Chrome decal has raised lettering. This Supra Boats Chrome Decal 59" is used for both the port and starboard sides of the boat. This is also the OEM...
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    $399.99
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  • MasterCraft Courtesy and Glovebox Light MasterCraft Courtesy and Glovebox Light

    MasterCraft Courtesy and Glovebox Light

    MasterCraft
    MSRP: $29.99
    $17.99
    MasterCraft Courtesy and Glovebox Light Replacement interior storage, glove box and courtesy light for MasterCraft boats. This light uses a 2 hole bolt pattern for installation with a chrome beauty cap that covers the top half and mounting holes...
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    MSRP: $29.99
    $17.99
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  • MasterCraft Ignition Ballast Circuit Breaker MasterCraft Circuit Breaker Ignition Ballast

    MasterCraft Circuit Breaker Ignition Ballast

    MasterCraft
    $9.99
    MasterCraft Ignition Ballast Circuit Breaker Genuine MasterCraft boats 20 Amp Ignition and ballast circuit breaker with 90 degree two prong terminals. This marine circuit breaker is ignition protected for use in many marine applications. Features screw...
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    $9.99
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  • Stainless Steel Boat Cupholder Stainless Steel Cupholder

    Stainless Steel Cupholder

    MasterCraft
    $12.99
    Stainless Steel Boat Cupholder These replacement stainless steel cup holders from MasterCraft feature an easy to install drop in design that lends a touch of elegance to your boat. The stainless look complements most interior boat upholstery themes...
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  • MasterCraft Combination LED Bow Navigation Light

    MasterCraft Combination LED Bow Navigation Light

    $75.99
    MasterCraft Combination LED Bow Navigation Light Replacement MasterCraft Combination LED Bow Navigation Light for use on many MasterCraft boats from 2006 to 2014. This assembly features both red and green lights. The cover is finished in stainless steel...
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    $75.99
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  • Amber 2" Round Reflector for MasterCraft Trailers

    Amber 2" Round Reflector for MasterCraft Trailers

    $2.99
    Amber 2" Round Reflector for MasterCraft Trailers This is a replacement Amber 2" Round Reflector for MasterCraft Trailers. Replace your broken or missing reflector today and keep your trailer visible at night! This part from MasterCraft attaches to your...
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    $2.99
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  • MasterCraft Boats Flexor Chrome Transom Decal

    MasterCraft Boats Flexor Chrome Transom Decal

    MasterCraft

    $249.99
    MasterCraft Boats Transom Decal MasterCraft OEM transom decal for most X-Series boats (without cut through "r"). Standard on X-Stars, X-1, 2004-2006 X-2, X-10 and X-30. Approximate size: 3" tall by 29" long Use the boat part look up below to ensure you...
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  • Boat Bling Hot Sauce - 1 Quart

    Boat Bling Hot Sauce - 1 Quart

    Boat Bling
    $22.99
    Boat Bling Hot Sauce Boat Bling Hot Sauce is Boat Bling's #1 selling product. This simple spray on wipe off is perfect for getting rid of those tough to tackle water spots, and it does NOT strip your wax! Bio-degradable, safe, soft water-based detailer...
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  • MasterCraft Muffler | TBI VRS - Muffler Only

    MasterCraft Muffler | TBI VRS - Muffler Only

    MasterCraft
    $1,399.99
    MasterCraft Muffler | TBI VRS - Muffler Only This is a genuine replacement fiberglass muffler kit for many MasterCraft V-drive boats with the standard 350 engine with a throttle body intake. This muffler was typically used in V-Drive boats made from 1999...
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  • Rudder Key 1/4" x 3/4"

    Rudder Key 1/4" x 3/4"

    MSRP: $9.99
    $8.99
    Rudder Key 1/4" x 3/4" Rudder Key 1/4" x 3/4" Replacing your cotter pin is cheap insurance and should never be overlooked. This is too important of a piece to be with out and letŒÍs face it, there is no way to look cool while stranded on the lake. This...
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    MSRP: $9.99
    $8.99
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  • Roswell Elite Dual Surf Rack 1 Roswell Elite Dual Surf Rack 2

    Roswell Elite Dual Surf Rack

    Roswell
    $506.00
    Roswell Elite Dual Surf Rack With wake surfing growing as much as it is, it would be great if there was a rack that would hold two surfboards! Behold the Roswell Elite Dual Surf Rack! The tried and true Roswell webbed bungee will keep the boards held...
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    $506.00
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  • MasterCraft Board Rack T Handle Quick Release MasterCraft Board Rack T Handle Quick Release

    MasterCraft Board Rack T Handle Quick Release

    MasterCraft
    $199.99
    MasterCraft Board Rack T Handle Quick Release MasterCraft wakeboard and slalom ski rack quick release T Handle. This T Handle is designed for 2005, 2006, 2007, 2008, 2009, 2010 and 2011 MasterCraft boats with a factory rotating swivel board racks...
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    $199.99
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  • MasterCraft Gas Shock Motor Box and Engine Cover #70

    MasterCraft Gas Shock Motor Box and Engine Cover #70

    MSRP: $29.99
    $24.99
    MasterCraft Gas Shock Motor Box and Engine Cover  Gas strut from MasterCraft Boats used on many MasterCraft boats motorbox and engine covers. This gas shock is designed to hold up the engine dog house and is a direct factory replacement to old worn...
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    MSRP: $29.99
    $24.99
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  • 24' MasterCraft Steering Cable

    24' Steering Cable

    SeaStar Solutions
    $299.99
    24' MasterCraft Steering Cable When the steering on your boat gets stiff it's time to replace the steering cable. This 24' Steering cable is a direct replacement for Many MasterCraft boats. A new steering cable helps keep your boat operating in peak...
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    $299.99
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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.