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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  • Prestolite Distributor Cap

    Distributor Cap (86-Older) Prestolite

    $60.99
    Prestolite Distributor Cap Fits Ford and GM based V8 engines 1986 and older with a Prestolite distributor. This is a distributor Cap only.Note: There were a FEW 1987 boats built that had the "old" CLIP-ON type distributor cap still.Please note: No...
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    $60.99
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  • Brake Caliper for MasterCraft Trailers Brake Caliper for MasterCraft Trailers

    Brake Caliper for MasterCraft Trailers

    MSRP: $199.99
    $174.99
    Brake Caliper for MasterCraft Trailers This replacement Brake Caliper for MasterCraft Trailers is for use on all trailers from 2003-2012. This caliper works for both right and left sides on the trailer and also includes ceramic brake pads. This is a...
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    MSRP: $199.99
    $174.99
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  • Speedometer Pitot Tube

    Speedometer Pitot Tube

    Northern Wholesale
    $19.99
    Speedometer Pitot Tube Slotted mounting plate allows for easy installation of this competitive Pitot Tube in the existing holes on your boat. This part will replace your broken Air Guide pitot tube that is no longer available. Best of all this Pitot tube...
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    $19.99
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  • PTM Edge Elite Mirror PTM Edge Elite Mirror

    PTM Edge Elite Mirror

    PTM Edge
    $529.99
    PTM Edge Elite Mirror The PTM Edge Elite Mirror is the perfect mirror for all of your watersports needs. This mirror provides uninterrupted, high-definition, and high-clarity view of the rider from port to starboard. The PTM Edge Elite Mirror features...
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    $529.99
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  • MasterCraft Boats Chrome Transom Decal 20"

    MasterCraft Boats Chrome Transom Decal 20"

    $469.99
    MasterCraft Boats Chrome Decal 20" 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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    $469.99
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  • MasterCraft Tower Knob Rear Pivot 2007 through 2011 MasterCraft Tower Knob Rear Pivot 2007 through 2011

    MasterCraft Tower Knob Rear Pivot 2007 through 2011

    MasterCraft
    $174.99
    MasterCraft Tower Knob Rear Pivot 2007 through 2011 Genuine MasterCraft tower knob. This knob is designed for 2007, 2008, 2009, 2010 and 2011 MasterCraft boats with a factory Zero Flex Flyer including the X-1, X-2, X-7, X-9, X-15, X-25, X-30, X-35, X-45...
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    $174.99
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  • MasterCraft ProStar Glove Box Latch

    MasterCraft ProStar Glove Box Latch

    MasterCraft

    MSRP: $54.99
    $49.99
    MasterCraft ProStar Glove Box Latch This is a direct replacement MasterCraft ProStar Glove Box Latch for your MasterCraft boat. Keep your MasterCraft boat looking in peak condition with Genuine MasterCraft parts. This latch fits the following MasterCraft...
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    MSRP: $54.99
    $49.99
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  • MasterCraft Tower Knob Rear Pivot At Foot 2005 2006 MasterCraft Tower Knob Rear Pivot At Foot 2005 2006

    MasterCraft Tower Knob Rear Pivot At Foot 2005 2006

    MasterCraft
    $174.99
    MasterCraft Boats Wakeboard Tower Knob Genuine MasterCraft tower knob. This knob is designed for 2005 and 2006 MasterCraft boats with a factory tower including the X-1, X-2, X-7, X-9, X-10, X-30 and X-45. This knob is used at the rear foot where the...
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    $174.99
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  • Jabsco Green Ballast Impeller Jabsco Green Ballast Impeller

    Jabsco Green Ballast Impeller

    MasterCraft
    $64.99
    Jabsco Green Ballast Impeller Jabsco Replacement Ballast Impeller for use with all Jabsco Ballast Pumps in MasterCraft, Supra, Moomba, and Nautique Boats. Green Ballast impellers are designed for larger ballast systems. They feature a stiffer rubber to...
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    $64.99
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  • Ilmor Water Temperature Sensor | 1012 Ilmor Water Temperature Sensor | 1012

    Ilmor Water Temperature Sensor | 1012

    Ilmor
    $19.99
    MasterCraft Ilmor 5.7L Water Temperature Sensor Ilmor Water Temperature Sensor for MasterCraft boats. Specifically designed by Ilmor and MasterCraft for 5.7L Ilmor engines. Ilmor water temperature sensors are engineered for precision and durability...
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  • Prop Shaft Cotter Pin Prop Shaft Cotter Pin

    Prop Shaft Cotter Pin

    OJ Props
    MSRP: $3.50
    $1.99
    Propeller Shaft Cotter Pin The Cotter Pin helps ensure that you don't lose your boats propeller and prop nut. Replace the cotter pin every time you change out your boat prop to ensure that you never get stranded on the lake, or worse lose your costly...
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    MSRP: $3.50
    $1.99
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  • MasterCraft Strut for Boats with 1" Drive Shaft MasterCraft 1" Strut

    MasterCraft 1" Strut

    $499.99
    MasterCraft Strut for Boats with 1" Drive Shaft The MasterCraft strut is a genuine MasterCraft boat part for boats with a 1" keyed drive shaft. This strut is specifically designed for MasterCraft direct drive boats with a 1:1 transmission. This...
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    $499.99
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  • Prop Key for Keyed Drive Shaft Prop Key for Keyed Drive Shaft

    Prop Key 1/4" x 1 1/4"

    OJ Props
    MSRP: $9.99
    $8.99
    Prop Key 1/4" x 1 1/4" Don't be caught on the lake without a spare Prop Key 1/4" x 1 1/4" This is too important of a piece to be without and let's face it, there is no way to look cool while stranded on the lake. This is a universal part it works on most...
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    MSRP: $9.99
    $8.99
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  • Indmar Knock Sensor Indmar Knock Sensor

    Indmar Knock Sensor

    Indmar
    $159.99
    Indmar Knock Sensor Genuine Indmar Knock Sensor. This part is commonly found in Indmar engines in MasterCraft, Malibu, Supra and Moomba boats. This part threads into the block and features a wire harness connector at the other end. Use the boat part look...
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    $159.99
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  • Gas Shock 30# Motorbox and Engine Cover

    Gas Shock 30# Motorbox and Engine Cover

    MSRP: $19.99
    $14.99
    Gas Shock 30# Motorbox and Engine Cover 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 v-drive boat. This gas shock...
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    MSRP: $19.99
    $14.99
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  • Ilmor Ignition Coil Assembly | PV06356 Ilmor Ignition Coil Assembly | PV06356

    Ilmor Ignition Coil Assembly | PV06356

    Ilmor
    $149.99
    Ilmor Ignition Coil Assembly | PV06356 Ilmor Ignition Coil for MasterCraft boats. This is a replacement for Ilmor MV8V-1026. Maintain like-new performance for your Ilmor engine with these Ilmor specified ignition coils. These coils are designed as a...
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    $149.99
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  • 3M 5200 Marine Adhesive Sealant 3oz Tube

    3M 5200 Marine Adhesive Sealant 3oz Tube

    Hannays
    $31.99
    3M 5200 Marine Adhesive Sealant 3oz Tube 3M 5200 Marine Adhesive and Sealant is used when installing new struts or tracking fins. This high strength and white in color. 5200 provides for watertight bonding and sealing of fiberglass and wood. Ideal for...
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  • MasterCraft Southco Soft Draw Latch

    Southco Soft Draw Latch

    MasterCraft
    MSRP: $39.99
    $32.99
    Southco Soft Draw Latch This latch is a replacement for your MasterCraft engine box.   Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
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    MSRP: $39.99
    $32.99
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  • MasterCraft Circuit Breaker 3 Amp

    MasterCraft Circuit Breaker 3 Amp

    MasterCraft
    MSRP: $19.99
    $16.99
    MasterCraft 3 Amp Circut Breaker Genuine MasterCraft boats 3 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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  • Log Shaft Packing For 1 1/8" Drive Shaft Log Shaft Packing For 1 1/8" Drive Shaft

    Log Shaft Packing For 1 1/8" Drive

    $4.99
    Log Shaft Packing For 1 1/8" Drive Wax impregnated rope for drive shaft and rudder stuffing boxes. Each piece is 3/16 diameter and 4.5" long. The 3/16 shaft packing is designed for boats with a 1 1/8" drive shaft which is commonly found on MasterCraft,...
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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.