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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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  1. Oil Pan, 8.1 Liter with Baffle | Crusader R005023
    Oil Pan, 8.1 Liter with Baffle | Crusader R005023
    CRU-R005023
    Qty In Stock: 0

    Oil Pan, 8.1 Liter with Baffle

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    MSRP: $810.55 $718.76
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  2. Spark Plug Wire Set | Crusader RA121008/9
    Spark Plug Wire Set | Crusader RA121008/9
    CRU-RA121008/9
    Qty In Stock: 0
    Brand: Crusader

    Spark plug wire set. Fits Ford 302 & 351 V8 small block engines.  7mm diameter.

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    MSRP: $45.86 $45.83
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  3. Exhaust Riser Gasket | Crusader RM0292
    Exhaust Riser Gasket | Crusader RM0292
    CRU-RM0292
    Qty In Stock: 0
    Brand: Crusader

    Exhaust riser gasket

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    MSRP: $86.76 $74.29
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  4. Circulating Water Pump for 6.0 liter Engines | Crusader RA057036
    Circulating Water Pump for 6.0 liter Engines | Crusader RA057036
    CRU-RA057036
    Qty In Stock: 0
    Brand: Crusader

    Circulating Water Pump for 6.0 liter Engines 

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    MSRP: $493.14 $466.75
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  5. Image
    GM Big Block Stamped Steel Oil Pan | Crusader 31145
    CRU-31145
    Qty In Stock: 0
    Brand: Crusader
    OE stamped steel oil pan used on Crusader 454 CID and 502 CID marine engines with a 1 piece rear main seal. Learn More
    MSRP: $298.09 $288.47
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  6. Flame Arrestor Cover | Crusader R060045
    Flame Arrestor Cover | Crusader R060045
    CRU-R060045
    Qty In Stock: 0
    Brand: Crusader
    Flame Arrester Cover Learn More
    MSRP: $119.36 $104.81
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  7. Adapter Harness | Crusader RA121094
    Adapter Harness | Crusader RA121094
    CRU-RA121094
    Qty In Stock: 0
    Brand: Crusader
    ADAPTER HARNESS Learn More
    MSRP: $83.08 $78.93
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  8. Large Image
    U-Cooler Assembly | Crusader 98123
    CRU-98123
    Qty In Stock: 0
    Brand: Crusader
    Combination transmission and engine oil cooler used on Crusader big block 7.4 liter and 8.2 liter marine engines 1991 and later with inverted flare fittings. Learn More
    MSRP: $1,015.20 $982.41
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  9. Electronic Control Module | Crusader R116027
    Electronic Control Module | Crusader R116027
    CRU-R116027
    Qty In Stock: 0
    Brand: Crusader
    Electronic Control Module Learn More
    MSRP: $983.06 $983.05
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  10. Small Image
    Ignition Coil | Crusader R117012
    CRU-R117012
    Qty In Stock: 0
    Brand: Crusader

    Crusader 8.1L ignition coil

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    MSRP: $188.46 $164.12
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  11. CRU-RA080035A FCC 6.0 - 8.1L MODULAR RTNLS
    6.0-8.1 liter Modular Returnless Fuel Control System | Crusader RA080035A
    CRU-RA080035A
    Qty In Stock: 0
    Brand: Crusader

    6.0-8.1 liter Modular Returnless Fuel Control System

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    MSRP: $1,880.96 $1,555.69
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  12. Hose | Crusader RA045121A
    Hose | Crusader RA045121A
    CRU-RA045121A
    Qty In Stock: 0
    Brand: Crusader
    Hose Learn More
    MSRP: $55.39 $55.35
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