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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  • MasterCraft Muffler | 3" Straight 42" MasterCraft Muffler | 3" Straight 42"

    MasterCraft Muffler | 3" Straight 42"

    MasterCraft
    $249.99
    MasterCraft Muffler 3" Straight 42" This is a genuine replacement fiberglass muffler for many MasterCraft boats. This muffler was typically used in direct drive boats made from 1979 to 1982 and features a 3" in and out with an average overall length of...
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    $249.99
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  • MasterCraft Circuit Breaker 10 Amp

    MasterCraft Circuit Breaker 10 Amp

    MasterCraft
    MSRP: $19.99
    $16.99
    MasterCraft Circuit Breaker 10 Amp Genuine MasterCraft boats 10 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...
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    MSRP: $19.99
    $16.99
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  • Log Shaft Packing For 1" Drive Shaft Log Shaft Packing For 1" Drive

    Log Shaft Packing For 1" Drive Shaft

    $4.99
    Log Shaft Packing For 1" Drive Shaft Wax impregnated rope for drive shaft and rudder stuffing boxes. Each piece is 1/4" diameter and 4.5" long. The 1/4" shaft packing is designed for boats with a 1" drive shaft which is commonly found on 2002 and older...
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    $4.99
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  • MasterCraft Rule 3" Blower Rule 3" Blower

    Rule 3" Bilge Blower

    MasterCraft

    $41.99
    Rule 3" Bilge Blower This is a Rule 3" Bilge Blower for MasterCraft Boats, Supra Boats and Moomba Boats. This inline blower will come with the Deutsch 2 pin connector connected to the blower for easy replacement. This blower has been used by MasterCraft...
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    $41.99
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  • MasterCraft Boats Glove Box Strut

    MasterCraft Boats Glove Box Strut

    MasterCraft

    MSRP: $19.99
    $13.99
    MasterCraft Boats Glove Box Strut MasterCraft Boats Glove Box Strut used on many MasterCraft boats to hold the glovebox open. This shock is 7.5" in length and features 10lbs of pressure. Use the boat part look up below to ensure you are purchasing the...
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    MSRP: $19.99
    $13.99
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  • Ilmor 95 Amp Alternator | PV06102 Ilmor 95 Amp Alternator | PV06102

    Ilmor 95 Amp Alternator | PV06102

    Ilmor
    $424.99
    Ilmor 95 Amp Alternator | PV06102 Ilmor 95 Amp Alternator with pulley is manufactured to provide superior quality, industry-leading coverage, and extreme durability. Designed to withstand the extreme electrical rigors demanded from today’s...
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    $424.99
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  • Gas Shock 40# Observers Seat Lift Back

    Gas Shock 40# Observers Seat Lift Back

    MasterCraft

    MSRP: $19.99
    $18.99
    Gas Shock 40# Observers Seat Lift Back Gas strut from MasterCraft Boats used on ProStar 190, 197 214 and 214V observer seats. This gas shock is also used on MasterCraft X-7, X-14 and X-14V observer seats. Gas shock measures 15" in length and features...
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    MSRP: $19.99
    $18.99
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  • MasterCraft OEM Rudder - 176 MasterCraft OEM Rudder - 176

    MasterCraft OEM Rudder - 176

    MasterCraft
    $599.99
    MasterCraft OEM Rudder- 176 This genuine MasterCraft OEM Rudder is model specific. If you have damaged your rudder it is typical that your Rudder Port is also damaged along with other UnderWater Gear. Use the Parts Finder to select your year make and...
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    $599.99
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  • MasterCraft MMDC Box Mini M3 '08-'09 VDIG Only

    MasterCraft MMDC Box Mini M3 '08-'09 VDIG Only

    MasterCraft
    $3,999.99
    MasterCraft MMDC Box Mini M3 VDIG '08-'09 Gauges not working after the winter or a cold snap? Your MMDC box is most likely the problem. Replace your MasterCraft MMDC Box and get everything back to working! This is an OEM MasterCraft specific part...
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    $3,999.99
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  • MasterCraft Replacement Exhaust Tip MasterCraft Exhaust Tip Replacement

    MasterCraft Exhaust Tip Replacement

    MasterCraft
    MSRP: $79.99
    $74.99
    MasterCraft Replacement Exhaust Tip This is a genuine replacement stainless steel exhaust tip for MasterCraft X-14V and ProStar 214V boats. Replace your blown out exhaust tip with this factory replacement. Includes new tip and two stainless steel rivets...
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    MSRP: $79.99
    $74.99
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  • MasterCraft ProStar Seat Base Latch MasterCraft ProStar Seat Base Latch

    MasterCraft ProStar Seat Base Latch

    MasterCraft
    $73.99
    MasterCraft ProStar Seat Base Latch This is a direct replacement seat base storage latch for many of the MasterCraft ProStar boats with a square latch. This part includes spare keys, latch and nylock nut. Keep your MasterCraft boat looking in peak...
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    $73.99
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  • Gas Shock 40# Motorbox and Ski Locker

    Gas Shock 40# Motorbox and Ski Locker

    MasterCraft
    $33.99
    Gas Shock 40# Motorbox and Ski Locker 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 40lbs...
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    $33.99
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  • Exhaust Flap 3", 3.5", & 4" Exhaust Flap 3"/3.5"/4"

    Exhaust Flap 3"/3.5"/4"

    Skiers Choice
    $19.99
    Exhaust Flap 3"/3.5"/4" This is a 4" Exhaust Flap. It can be cut to fit 3" and 3.5" flanges. The 3" and 3.5" flaps are no longer made.This is sold individually. Use the boat part look up below to ensure you are purchasing the correct part for your boat...
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    $19.99
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  • MasterCraft Circuit Breaker 7 Amp

    MasterCraft Circuit Breaker 7 Amp

    MasterCraft
    MSRP: $19.99
    $16.99
    MasterCraft Circuit Breaker 7 Amp Genuine MasterCraft boats 7 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" Inlet/Outlet- Vertical Port MasterCraft Muffler | 3.5" Inlet/Outlet- Vertical Port

    MasterCraft Muffler | 3.5" Inlet/Outlet- Vertical Port

    MasterCraft
    $674.99
    MasterCraft Muffler | 3.5" Inlet/Outlet- Vertical Port This is a genuine replacement fiberglass muffler for many MasterCraft boats. This is a single muffler for the Port Side of the boat on boats outfitted with a port and starboard side muffler. Use of...
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    $674.99
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  • MasterCraft Toggle Switch Blue LED 3 Position 8 Prong MasterCraft Toggle Switch Blue LED 3 Position 8 Prong

    MasterCraft Toggle Switch Blue LED 3 Position 8 Prong

    MasterCraft
    $50.99
    MasterCraft Toggle Switch Blue LED 3 Position 8 Prong MasterCraft Toggle Switch with blue LED. This is a 3 position MasterCraft switch with 8 prongs used where a 3 position (ON/OFF/ON) switch is required such as 2006 MasterCraft ballast, navigation and...
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    $50.99
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  • MasterCraft Glove Box Hinge MasterCraft Glove Box Hinge

    MasterCraft Glove Box Hinge

    MasterCraft

    $43.99
    MasterCraft Glove Box Hinge These replacement MasterCraft Glove Box Hinges feature a 4 hole mounting pattern with an adjustable friction adjustment. friction is adjustable via the top mounted screw allowing you to properly set the hinge preventing the...
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    $43.99
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  • Gas Shock 60# Sundeck and Trunk

    Gas Shock 60# Sundeck and Trunk

    MasterCraft
    MSRP: $19.99
    $14.99
    Gas Shock 60# Sundeck and Trunk Gas strut from MasterCraft Boats used on many MasterCraft boats side sundeck, trunk and ski storage areas. This shock features 60lbs of lift strength and is 15" in length making it the perfect fit for many MasterCraft...
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    MSRP: $19.99
    $14.99
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  • MasterCraft Circuit Breaker 5 Amp

    MasterCraft Circuit Breaker 5 Amp

    MasterCraft
    MSRP: $19.99
    $16.99
    MasterCraft Boats 5 Amp Circut Breaker Genuine MasterCraft boats 5 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...
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    MSRP: $19.99
    $16.99
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  • Gas Shock 30# Sundeck and Trunk

    Gas Shock 30# Sundeck and Trunk

    MasterCraft

    $17.99
    MasterCraft Gas Shock 30# Sundeck and Trunk Gas strut from MasterCraft Boats used on many MasterCraft boats sundeck, trunk and ski storage areas. This shock features 30lbs of lift strength and is 12" in length making it the perfect fit for many ProStar...
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    $17.99
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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.