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 | Stbd Only | 2020+

    MasterCraft Muffler | Stbd Only | 2020+

    MasterCraft
    $464.99
    MasterCraft Muffler | Stbd Only | 2020+ This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
    Quantity:
    Price:
    $464.99
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  • MasterCraft Muffler | Stbd Side Only | 6.2L/7.4L

    MasterCraft Muffler | Stbd Side Only | 6.2L/7.4L

    MasterCraft
    $749.99
    MasterCraft Muffler | Stbd Side Only | 6.2L/7.4L This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    Price:
    $749.99
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  • MasterCraft Muffler | Stbd Side Only | 5.7L/6.0L

    MasterCraft Muffler | Stbd Side Only | 5.7L/6.0L

    MasterCraft
    $729.99
    MasterCraft Muffler | Stbd Side Only | 5.7L/6.0L This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    $729.99
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  • MasterCraft Muffler | Port Only| 2020+

    MasterCraft
    $464.99
    MasterCraft Muffler | Port Only| 2020+ This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
    Quantity:
    Price:
    $464.99
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  • MasterCraft Muffler | Port Side Only | 6.2L/7.4L

    MasterCraft Muffler | Port Side Only | 6.2L/7.4L

    MasterCraft
    $749.99
    MasterCraft Muffler | Port Side Only | 6.2L/7.4L This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
    Quantity:
    Price:
    $749.99
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  • MasterCraft Muffler | Port Side Only | 5.7L/6.0L

    MasterCraft Muffler | Port Side Only | 5.7L/6.0L

    MasterCraft
    $729.99
    MasterCraft Muffler | Port Side Only | 5.7L/6.0L This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    Price:
    $729.99
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  • MasterCraft Muffler | 6.2L PS | 081

    MasterCraft Muffler | 6.2L PS | 081

    MasterCraft
    $639.99
    MasterCraft Muffler | 6.2L PS | 081 This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    Price:
    $639.99
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  • MasterCraft Muffler | 5.7 ProStar Kit | 007

    MasterCraft Muffler | 5.7 ProStar Kit | 007

    MasterCraft
    $1,229.99
    MasterCraft Muffler | 5.7 ProStar Kit | 007 This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    $1,229.99
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  • MasterCraft Muffler | Stainless Steel Flange w/Flap | 041

    MasterCraft Muffler | Stainless Steel Flange w/Flap | 041

    MasterCraft
    $499.99
    MasterCraft Muffler | Stainless Steel Flange w/Flap | 041 This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    $499.99
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  • Supra | Moomba Muffler - Muffler Only - 340 Catalyst - dual 3.5" inlets/outlets

    Supra | Moomba Muffler - Muffler Only - 340 Catalyst - dual 3.5" inlets/outlets

    Skiers Choice
    $1,399.99
    Supra | Moomba Muffler - Muffler Only - 340 Catalyst - dual 3.5" inlets/outlets This is a genuine replacement fiberglass muffler for many Supra and Moomba Boats. Muffler Only - Does not include elbow hoses. Use the boat part look up below to ensure you...
    Qty in Cart: 0
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    Price:
    $1,399.99
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  • Supra | Moomba Muffler - 3.5" inlet w/60° angle - 3.5" outlet

    Supra | Moomba Muffler - 3.5" inlet w/60° angle - 3.5" outlet

    Skiers Choice
    $624.99
    Supra | Moomba Muffler - 3.5" inlet w/60° angle - 3.5" outlet This is a genuine replacement fiberglass muffler for many Supra and Moomba Boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    $624.99
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  • Supra | Moomba Muffler - 3.5" Inlet w/ extended 60° angle, 3" out

    Supra | Moomba Muffler - 3.5" Inlet w/ extended 60° angle, 3" out

    Skiers Choice
    $599.99
    Supra | Moomba Muffler - 3.5" Inlet w/ extended 60° angle, 3" out This is a genuine replacement fiberglass muffler for many Supra and Moomba Boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    Price:
    $599.99
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  • Supra | Moomba Muffler - 0437 - 3.5" in/out inline - approx 15" OAL

    Supra | Moomba Muffler - 0437 - 3.5" in/out inline - approx 15" OAL

    Skiers Choice
    $489.99
    Supra | Moomba Muffler - 0437 - 3.5" in/out inline - approx 15" OAL This is a genuine replacement fiberglass muffler for many Supra and Moomba Boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
    Quantity:
    Price:
    $489.99
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  • Supra | Moomba Muffler - Muffler Only - V-drive dual 3.5" inlets/outlets

    Supra | Moomba Muffler - Muffler Only - V drive dual 3.5" inlets/outlets

    Skiers Choice
    $1,199.99
    Supra | Moomba Muffler - Muffler Only - V-Drive dual 3.5" inlets/outlets This is a genuine replacement fiberglass muffler for many Supra and Moomba Boats. Muffler Only - Does not include elbow hoses. Use the boat part look up below to ensure you are...
    Qty in Cart: 0
    Quantity:
    Price:
    $1,199.99
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  • Supra | Moomba Muffler - 3.5" inlet w/60° angle  - 3" outlet

    Supra | Moomba Muffler - 3.5" inlet w/60° angle - 3" outlet

    Skiers Choice
    $559.99
    Supra | Moomba Muffler - 3.5" inlet w/60° angle - 3" outlet This is a genuine replacement fiberglass muffler for many Supra and Moomba Boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    Price:
    $559.99
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  • MasterCraft Muffler | Muffler Only - MCX

    MasterCraft Muffler | Muffler Only - MCX

    MasterCraft
    $1,449.99
    MasterCraft Muffler | Muffler Only - MCX This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
    Quantity:
    Price:
    $1,449.99
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  • MasterCraft Muffler | Muffler Only- 6.0 VRS - Cadillac

    MasterCraft Muffler | Muffler Only- 6.0 VRS - Cadillac

    MasterCraft
    $1,399.99
    MasterCraft Muffler | Muffler Only- 6.0 VRS - Cadillac This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat. Hose Sold Separately. Not...
    Qty in Cart: 0
    Quantity:
    Price:
    $1,399.99
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  • MasterCraft Muffler | Muffler Only- 8.1L 4" VRS

    MasterCraft Muffler | Muffler Only- 8.1L 4" VRS

    MasterCraft
    $1,439.99
    MasterCraft Muffler | Muffler Only- 8.1L 4" VRS This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
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    Price:
    $1,439.99
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  • MasterCraft Muffler | 3.5" In/Out - Stbd Universal

    MasterCraft Muffler | 3.5" In/Out - Stbd Universal

    MasterCraft
    $819.99
    MasterCraft Muffler | 3.5" In/Out - Stbd Universal This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
    Quantity:
    Price:
    $819.99
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  • MasterCraft Muffler | 3.5"In/Out - Port Universal

    MasterCraft Muffler | 3.5"In/Out - Port Universal

    MasterCraft
    $819.99
    MasterCraft Muffler | 3.5"In/Out - Port Universal This is a genuine replacement fiberglass muffler for many MasterCraft boats. Use the boat part look up below to ensure you are purchasing the correct part for your boat.  
    Qty in Cart: 0
    Quantity:
    Price:
    $819.99
    Subtotal:
  • Total: items /

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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.