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Inboard & I/O Engine Parts

Inboard Marine Engine Parts and Accessories

As the largest online dealer of inboard boat parts, Marine Parts Source will help you find the right engine parts you need for any project. We’re here to assist with seasonal maintenance, major repairs and more so you can get back on the water. Use our convenient categories to browse our collection — or if you know the part number you need, enter it into the search bar. From oil and fuel filters to spark plugs, exhaust manifolds, bell housings, starters and alternator belts, we supply boat owners from coast to coast.

You can always count on quality and knowledge when you shop with us. We’re an authorized dealer of the leading OEM and aftermarket performance inboard marine brands, including J&N Electric, Sierra, Arco Marine, Volvo Penta and Crusader. If you have a question, our sales associates have the technical expertise to answer it. Enjoy free ground shipping on qualifying orders so your vessel is ready for adventure.

Inboard & I/O Engine Parts

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    Universal Heat Exchanger | Seakamp 302631
    SK-302631
    Qty In Stock: 0
    Brand: Seakamp Engineering
    Aftermarket replacement heat exchanger for Universal M4-30 marine engines. Learn More
    MSRP: $690.00 $594.83
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  2. Small Image
    Hose | Volvo Penta 3860400
    VOLVO-3860400
    Qty In Stock: 0
    Brand: Volvo Penta
    HOSE Learn More
    MSRP: $89.20 $78.69
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  3. 8.1 liter Spark Plug Wire Set | Sierra 18-8838-1
    8.1 liter Spark Plug Wire Set | Sierra 18-8838-1
    SIERRA-18-8838-1
    Qty In Stock: 0
    Brand: Sierra

    8.1 liter Spark Plug Wire Set

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    MSRP: $573.09 $465.16
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  4. Volvo Penta 24333573 Electric Fuel Pump Assembly
    Electric Fuel Pump Assembly | Volvo Penta 24333573
    VOLVO-24333573
    Qty In Stock: 0
    OEM Volvo Penta electric fuel pump module assembly includes housing, high-pressure pump, low-pressure pump & new fuel filter. Learn More
    MSRP: $2,091.00 $1,773.96
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  5. Small Image
    Universal Heat Exchanger | Seakamp 201027
    SK-201027
    Qty In Stock: 0
    Brand: Seakamp Engineering
    Aftermarket heat exchanger tank for Universal M35B and M25XPB model marine engines. Learn More
    MSRP: $737.00 $635.34
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  6. Fuel Pump | Volvo Penta 24333572
    Fuel Pump | Volvo Penta 24333572
    VOLVO-24333572
    Qty In Stock: 0
    Brand: Volvo Penta
    Fuel Pump Learn More
    MSRP: $2,091.00 $1,845.77
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  7. Separ Filter 51-2565 2000/10KD 158 GPH Fuel Water Separator with Heat Shield and Water Contacts
    2000/10KD 158 GPH Fuel Water Separator | Separ Filter 51-2565
    SEPAR-51-2565
    Qty In Stock: 0
    Brand: Separ Filter
    2000/10KD - Single 158 GPH Fuel Water Separator with Clear Bowl, Water Contacts, and Heat Shield Learn More
    MSRP: $505.16 $456.26
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  8. Small Image
    Vernatone Round Muffler 3.5 in. Inlet/Outlet | Centek 1000105
    CENTEK-1000105
    Qty In Stock: 0
    Brand: Centek

    Fiberglass wet exhaust muffler is designed to reduce the noise of gasoline & diesel inboard marine engines.

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    MSRP: $631.64 $498.52
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  9. Small Image
    Universal Heat Exchanger | Seakamp 299835CN
    SK-299835CN
    Qty In Stock: 0
    Brand: Seakamp Engineering
    Premium aftermarket copper-nickel heat exchanger tank for Universal M-25 marine engines. Learn More
    MSRP: $724.00 $624.14
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  10. Small Image
    Big Block Heat Exchanger | Crusader 98117
    CRU-98117
    Qty In Stock: 0
    Brand: Crusader
    OEM heat exchanger tank fits Crusader closed cooled 454 and 502 XL model marine engines. Learn More
    MSRP: $1,667.92 $1,614.09
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  11. Oberdorfer Bronze Rubber Impeller Pump - N202M
    Westerbeke/Universal Raw Water Impeller Pump | Oberdorfer Pumps N202M-15
    OBER-OBN202M-15
    Qty In Stock: 0
    Brand: Oberdorfer Pumps

    This bronze raw water engine cooling impeller pump was designed to be mounted vertically on various Westerbeke/Universal branded engines. This pump features a full cam, 5 bolt flange, and 3/8 inch female NPT ports.

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    MSRP: $477.92 $398.26
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  12. VOLVO3587072_SM
    Keyed Diesel Ignition Switch | Volvo Penta 3587072
    VOLVO-3587072
    Qty In Stock: 0
    Brand: Volvo Penta

    OEM Volvo Penta ignition switch

    Learn More
    MSRP: $333.00 $318.25
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Items 13-24 of 625

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