Inboard Boat Parts

Get the performance and reliability your inboard boat demands with premium replacement parts from WaterSkis.com. Whether you’re maintaining a MasterCraft, Supra, or Moomba boat, we offer a wide selection of genuine and OEM-compatible inboard boat parts to keep your engine, drivetrain, and cooling systems running strong.

From impellers and ignition components to thermostats and transmission parts, every item in this category is curated for quality, compatibility, and long-lasting performance. Not sure where to start? Use our Boat Part Lookup Tool to instantly find the exact part you need for your specific make, model, and engine configuration.

At WaterSkis.com, we know your time on the water matters. That’s why we make it easy to find the right boat parts—fast, accurate, and backed by real-world expertise.


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  • Attwood 4" Bilge Blower

    Attwood 4" Bilge Blower

    MasterCraft
    $46.99
    Attwood 4" Bilge Blower Get the vapors out from under your motor box with a new Attwood 4" Bilge Blower. Patented in-line design provides ventilation for engine compartments, galleys, bilges, and heads. Mounting feet allow vertical or horizontal...
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    $46.99
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  • MasterCraft X-Series Glove Box Latch

    MasterCraft X-Series Glove Box Latch

    MSRP: $54.99
    $49.99
    MasterCraft Glove Box Latch This is a direct replacement glove box latch for many of the MasterCraft boats. Keep your MasterCraft boat looking in peak condition with Genuine MasterCraft. This latch fits the following MasterCraft boats2006-2010...
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    MSRP: $54.99
    $49.99
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  • 18' Steering Cable

    18' Steering Cable

    SeaStar Solutions
    $299.99
    18' SeaStar Steering Cable When the steering on your boat gets stiff it's time to replace the steering cable. This 18' Steering cable is a direct replacement for Many MasterCraft, Supra and Moomba boats. A new steering cable helps keep your boat...
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    $299.99
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  • MasterCraft MMDC Box MasterCraft OEM MMDC Box all Models 2005-2006

    MasterCraft OEM MMDC Box all Models 2005-2006

    $3,999.99
    MasterCraft MMDC Box All of your gauges now working? Your MMDC box is most likely the problem. Replace your MasterCraft MMDC Box and get everything back to working! This MasterCraft MMDC Box is direct from MasterCraft and will work with all MasterCraft...
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    $3,999.99
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  • PTM Edge Pro Mirror PTM Edge Pro Mirror

    PTM Edge Pro Mirror

    PTM Edge
    $274.99
    PTM Edge Pro Mirror The PTM Edge Pro Mirror is the perfect mirror for all of your water sports needs. This mirror provides uninterrupted, high-definition, and high-clarity view of the rider from port to starboard. This is for the mirror only. Mounting...
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    $274.99
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  • MasterCraft / Moomba GPS Navigation Dongle

    GPS NAVIGATION

    $749.99
    MasterCraft / Moomba GPS Navigation Dongle The GPS Navigation USB dongle will work on all 2013-2017 MasterCraft X & XT series boats with the 7" dash along with Moomba Boat models 2017-Current that have Zero Off GPS Cruise control and the 7" dash...
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  • PTM Edge PCC-100 PRO Combo Pack PTM Edge PCC-100 PRO Combo Pack

    PTM Edge PCC-100 PRO Combo Pack

    PTM Edge
    $274.99
    PTM Edge PCC-100 PRO Combo Pack The PTM Edge PCC-100 PRO Combo Pack is the ultimate rearview mirror and bracket combination for serious watersports enthusiasts. Designed for maximum visibility, strength, and ease of use, this pack includes the...
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  • MasterCraft Boats Chrome Decal 42"

    MasterCraft Boats Chrome Decal 42"

    MasterCraft
    $499.99
    MasterCraft Boats Chrome Decal 42" Whither you are looking to update your old boat or just add a bit of flash to your new boat, the MasterCraft Chromex decal is the perfect fit. Since the Chromex decal comes in three different sizes, it can be used to...
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    $499.99
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  • MasterCraft Tracking Fin (2001 to Current)

    MasterCraft Tracking Fin (2001 to Current)

    $149.99
    MasterCraft Tracking Fin Genuine MasterCraft tracking fins for boats built from 2005 and up. This fin uses a 4 bolt mounting pattern and an investment cast construction process. Investment casting allows for extreme precision giving your boat the best...
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    $149.99
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  • MasterCraft OEM Drive Shaft 47.5" - 200 MasterCraft OEM Drive Shaft 47.5" - 200

    MasterCraft OEM Drive Shaft 47.5" - 200

    MasterCraft
    $699.99
    MasterCraft OEM Drive Shaft 47.5" - 200 This MasterCraft Drive Shaft is 47.5 inches long by 1 inch diameter and includes the coupler. This drive shaft is specifically designed for many MasterCraft Skier, ProStar and TriStar boats. This is a Genuine...
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    $699.99
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  • 2" Chrome MasterCraft Gas Cap

    2" Chrome MasterCraft Gas Cap

    $94.99
    2" Chrome MasterCraft Gas Cap This is a replacement 2" Gas Cap by Perko. Replace your lost, stolen, or just old gas cap. The smaller 2" cap size is used on many older boats by MasterCraft and other manufacturers. It features a standard two prong key open...
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    $94.99
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  • MasterCraft Toggle Switch Red LED 2 Position 6 Prong MasterCraft Toggle Switch Red LED 2 Position 6 Prong

    MasterCraft Toggle Switch Red LED 2 Position 6 Prong

    MasterCraft
    $120.99
    MasterCraft Toggle Switch Red LED 2 Position 6 Prong MasterCraft Toggle Switch with Red LED. This is a 2 position MasterCraft switch with 6 prongs used where a basic (ON/OFF) switch is required such as MasterCraft bilge and accessory toggle switches...
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    $120.99
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  • Packing Gland Assembly 1 Inch

    Packing Gland Assembly 1 Inch

    $369.99
    Packing Gland For 1" Shaft Replace your boats worn packing gland with this new assembly. Specifically designed for boats with a 1 1/8" drive shaft. Please note this part DOES NOT include log shaft packing, this must be purchased separately This part is...
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    $369.99
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  • MasterCraft OEM Strut - 399 MasterCraft OEM Strut - 399

    MasterCraft OEM Strut - 399

    MasterCraft

    $449.99
    MasterCraft OEM Strut - 399 This genuine MasterCraft OEM Strut is model specific. Even a small bend in your strut can cause vibrations and long-term damage to your drive shaft and possibly transmission. If you have a bent strut get your boat dialed back...
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    $449.99
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  • Gas Shock 20# Floorboards

    Gas Shock 20# Floorboards

    MasterCraft
    MSRP: $19.99
    $14.99
    Gas Shock 20# Floorboards 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 20lbs of pressure...
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    MSRP: $19.99
    $14.99
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  • Supra Boats Matte Black Decal 59" Supra Boats Matte Black Decal 59"

    Supra Boats Matte Black Decal 59"

    Supra Boats

    $399.99
    Supra Boat Black Decal 59" Give your Supra Boat an updated look with the Matte Black Decal. The Matte Black decal has raised lettering. This Supra Boats Matte Black Decal 59" is used for both the port and starboard sides of the boat. This is also the...
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    $399.99
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  • Supra Boats Chrome Transom Decal 36" Supra Boats Chrome Transom Decal 36"

    Supra Boats Chrome Transom Decal 36"

    Supra Boats
    $199.99
    Supra Boat Chrome Transom Decal 36" This transom decal is an OEM Supra Decal. The Supra Boats Chrome Transom Decal 36" will give your boat a fresh new look. Also fits great in the back window of your tow vehicle! Decal Size 3.2" x 36.36" This decal...
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    $199.99
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  • MasterCraft Circuit Breaker 4 Amp

    MasterCraft Circuit Breaker 4 Amp

    MasterCraft
    MSRP: $19.99
    $16.99
    MasterCraft Circuit Breaker 4 Amp Genuine MasterCraft boats 4 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 proudly...
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    MSRP: $19.99
    $16.99
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  • MasterCraft Muffler | 3.5" Horizontal W/50° Angle - 3.5" Outlet MasterCraft Muffler | 3.5" Horizontal W/50° Angle - 3.5" Outlet

    MasterCraft Muffler | 3.5" Horizontal W/50° Angle - 3.5" Outlet

    MasterCraft
    $599.99
    MasterCraft Muffler | 3.5" Horizontal W/50° Angle - 3.5" Outlet This is a genuine replacement fiberglass muffler for many MasterCraft ProStar boats. This muffler was typically used in direct drive boats made from 2009 to 2012 and features a 3.5" in and...
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    $599.99
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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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At WaterSkis.com, we combine deep product knowledge with industry-leading tools to help boat owners find the exact inboard boat parts they need. Whether you're working on a MasterCraft, Supra, or Moomba, our parts deliver the fit and reliability you can trust.

Use our Boat Part Lookup Tool to simplify your search, or explore related categories like cooling systems, engine components, and ignition parts. We’ve got everything you need to keep your boat running at its best.