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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  • Rockford Fosgate M1 6.5” Color Optix™ Moto-Can Speakers (pair) Rockford Fosgate M1 6.5” Color Optix™ Moto-Can Speakers (pair) 2

    Rockford Fosgate M1 6.5” Color Optix™ Moto-Can Speakers (pair)

    Rockford Fosgate
    $949.99
    Rockford Fosgate M1 6.5” Color Optix™ Moto-Can Speakers (pair) Tackle any terrain with the M1WL-65MB Color Optix™ 6.5" 2-way motorsport cans. Designed rugged and rock solid, the new line-up of 6.5” cans are built for true outdoor...
    Qty in Cart: 0
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    $949.99
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  • Rockford Fosgate Twisted Pair Signal Cable

    Rockford Fosgate Twisted Pair Signal Cable

    Rockford Fosgate
    $14.99 - $24.99
    Rockford Fosgate Twisted Pair Signal Cable Twisted pair design for noise rejection, split center pin for a secure connection, frosted outer shield for durability and flexibility. Features OFC (Oxygen Free Copper) for corrosion resistance Great sound...
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    $14.99 - $24.99
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  • Rockford Fosgate 800 Watt 4-Channel IPX6 Element Ready™ Amplifier Rockford Fosgate 800 Watt 4-Channel IPX6 Element Ready™ Amplifier 2

    Rockford Fosgate 800 Watt 4-Channel IPX6 Element Ready™ Amplifier

    Rockford Fosgate
    $689.99
    Rockford Fosgate 800 Watt 4-Channel IPX6 Element Ready™ Amplifier Rockford Fosgate amplifiers are known world-wide for producing more power than their ratings suggest. The M5 amplifiers are the first series based on new industry standard Dynamic...
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    $689.99
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  • Rockford Fosgate Color Optix™ Light Controller with Optional App Interface Rockford Fosgate Color Optix™ Light Controller with Optional App Interface 2

    Rockford Fosgate Color Optix™ Light Controller with Optional App Interface

    Rockford Fosgate
    $99.99
    Rockford Fosgate Color Optix™ Light Controller with Optional App Interface The PMX-RGB is an Element Ready™ watertight, IPX7 certified, RGB LED Light Controller. The controller features plug and play connectors that make the installation of...
    Qty in Cart: 0
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    $99.99
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  • Rockford Fosgate M2 500 Watt Mono Element Ready™ Amplifier Rockford Fosgate M2 500 Watt Mono Element Ready™ Amplifier 2

    Rockford Fosgate M2 500 Watt Mono Element Ready™ Amplifier

    Rockford Fosgate
    $349.99
    Rockford Fosgate M2 500 Watt Mono Element Ready™ Amplifier The M2 Series were developed for marine audio environments that feature UV resistant protection and special internal conformal coating that protect the electronics from water. It’s...
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    $349.99
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  • Rockford Fosgate M2 750 Watt 5-Channel Element Ready™ Amplifier Rockford Fosgate M2 750 Watt 5-Channel Element Ready™ Amplifier 2

    Rockford Fosgate M2 750 Watt 5-Channel Element Ready™ Amplifier

    Rockford Fosgate
    $569.99
    Rockford Fosgate M2 750 Watt 5-Channel Element Ready™ Amplifier The M2 Series were developed for marine audio environments that feature UV resistant protection and special internal conformal coating that protect the electronics from water...
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    $569.99
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  • Rockford Fosgate M2 300 Watt 4-Channel Element Ready™ Amplifier Rockford Fosgate M2 300 Watt 4-Channel Element Ready™ Amplifier 2

    Rockford Fosgate M2 300 Watt 4-Channel Element Ready™ Amplifier

    Rockford Fosgate
    $349.99
    Rockford Fosgate M2 300 Watt 4-Channel Element Ready™ Amplifier The M2 Series were developed for marine audio environments that feature UV resistant protection and special internal conformal coating that protect the electronics from water...
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    $349.99
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  • Rockford Fosgate M2 200 Watt 2-Channel Element Ready™ Amplifier Rockford Fosgate M2 200 Watt 2-Channel Element Ready™ Amplifier 2

    Rockford Fosgate M2 200 Watt 2-Channel Element Ready™ Amplifier

    Rockford Fosgate
    $299.99
    Rockford Fosgate M2 200 Watt 2-Channel Element Ready™ Amplifier The M2 Series were developed for marine audio environments that feature UV resistant protection and special internal conformal coating that protect the electronics from water...
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    $299.99
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  • Rockford Fosgate Punch Marine 1,000 Watt Class-bd Mono Amplifier Rockford Fosgate Punch Marine 1,000 Watt Class-bd Mono Amplifier

    Rockford Fosgate Punch Marine 1,000 Watt Class-bd Mono Amplifier

    Rockford Fosgate
    $689.99
    Rockford Fosgate Punch Marine 1,000 Watt Class-bd Mono Amplifier With its super efficient Class-bd circuit topology, the PM1000X1bd assures maximum BOOM for your buck! Due to its dedicated low frequency response, this amplifier is optimized for mid-bass...
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    $689.99
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  • Rockford Fosgate Bluetooth Universal Remote Rockford Fosgate Bluetooth Universal Remote 2

    Rockford Fosgate Bluetooth Universal Remote

    Rockford Fosgate
    $159.99
    Rockford Fosgate Bluetooth Universal Remote The PMX-BTUR is a universal Bluetooth® remote control designed for use with any audio system that utilizes a mobile device (phone) as a source having Bluetooth® connectivity. Remote control allows user...
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    $159.99
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  • Rockford Fosgate Punch Marine 500 Watt Class-bd Mono Amplifier Rockford Fosgate Punch Marine 500 Watt Class-bd Mono Amplifier 2

    Rockford Fosgate Punch Marine 500 Watt Class-bd Mono Amplifier

    Rockford Fosgate
    $549.99
    Rockford Fosgate Punch Marine 500 Watt Class-bd Mono Amplifier With its super efficient Class-bd circuit topology, the PM500X1bd will drop some serious BASS! Due to its dedicated low frequency response, this amplifier is optimized for mid-bass speakers...
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    $549.99
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  • Rockford Fosgate Punch Marine Full Function Wired Remote 2.7" Display Rockford Fosgate Punch Marine Full Function Wired Remote 2.7" Display 2

    Rockford Fosgate Punch Marine Full Function Wired Remote 2.7" Display

    Rockford Fosgate
    $299.99
    Rockford Fosgate Punch Marine Full Function Wired Remote 2.7" Display Multi Zone Control, Front Panel Sub Control, Waterproof Rotary Encoder Volume Control, Front Panel Illumination Control, IPX6 Front Panel Certification, Back Lit LED Button...
    Qty in Cart: 0
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    $299.99
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  • Rockford Fosgate Punch 100 Watt Full-Range Element Ready Mono Amplifier (pair) Rockford Fosgate Punch 100 Watt Full-Range Element Ready Mono Amplifier (pair) 2

    Rockford Fosgate Punch 100 Watt Full-Range Element Ready Mono Amplifier (pair)

    Rockford Fosgate
    $309.99
    Rockford Fosgate Punch 100 Watt Full-Range Element Ready Mono Amplifier (pair) The PM100X1 amplifier uses our patent pending BTL technology to provide you a very unique amplifier solution. This single channel amplifier utilizes the speaker output of the...
    Qty in Cart: 0
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    $309.99
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  • Rockford Fosgate Punch Marine 1,000 Watt Class-bd 5-Channel Amplifier Rockford Fosgate Punch Marine 1,000 Watt Class-bd 5-Channel Amplifier 2

    Rockford Fosgate Punch Marine 1,000 Watt Class-bd 5-Channel Amplifier

    Rockford Fosgate
    $799.99
    Rockford Fosgate Punch Marine 1,000 Watt Class-bd 5-Channel Amplifier The PM1000X5 1,000 Watt full-range 5-channel is the one-and-only amplifier you will need to run your entire system. Run dash speakers off the front channels, run back speakers off the...
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    $799.99
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  • Rockford Fosgate Punch Marine 600 Watt 4-Channel Amplifier Rockford Fosgate Punch Marine 600 Watt 4-Channel Amplifier 2

    Rockford Fosgate Punch Marine 600 Watt 4-Channel Amplifier

    Rockford Fosgate
    $649.99
    Rockford Fosgate Punch Marine 600 Watt 4-Channel Amplifier The Punch PM600X4 multi-channel amplifier is versatile to power any audio system configuration. In addition to 4-channel stereo mode, you can bridge both channels to create a high power 2-channel...
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    $649.99
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  • Rockford Fosgate Punch Marine 400 Watt 4-Channel Amplifier Rockford Fosgate Punch Marine 400 Watt 4-Channel Amplifier 2

    Rockford Fosgate Punch Marine 400 Watt 4-Channel Amplifier

    Rockford Fosgate
    $519.99
    Rockford Fosgate Punch Marine 400 Watt 4-Channel Amplifier The PM400X4 is perfect for 4-way front-stage/rear-fill or 3-way front-stage/subwoofer systems. Simply drop a pair of component speakers on the front channels and subs on the rear and BOOM - you...
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    $519.99
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  • Rockford Fosgate M0 6.5" Marine Grade Speakers (pair) - White Rockford Fosgate M0 6.5" Marine Grade Speakers (pair) - White

    Rockford Fosgate M0 6.5" Marine Grade Speakers (pair) - White

    Rockford Fosgate
    $129.99
    Rockford Fosgate M0 6.5" Marine Grade Speakers (pair) - White The newly designed M0 speakers feature weatherproofing technology specific for use in marine watercraft and off-road vehicle audio systems. The 100% UV stable frame combined with an...
    Qty in Cart: 0
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    $129.99
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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.