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. 2-1/2 inch Exoflex Exhaust/Water Hose, sold per foot | Sierra 116-254-2120-1
    2-1/2 inch Exoflex Exhaust/Water Hose, sold per foot | Sierra 116-254-2120-1
    SIERRA-116-254-2120-1
    Qty In Stock: 50
    Features a corrugated exterior and is internally reinforced by wire to prevent hose from collapsing. Primarily used for connections in marine wet exhaust and engine water circulation applications, especially where significant bends of hose are required. Designed to resist heat, exhaust gases, ozone, antifreeze, and saltwater Learn More
    MSRP: $21.19 $18.25
  2. Sierra-magneto-ignition-switch-MP39760
    Outboard Ignition Switch | Sierra MP39760
    SIERRA-MP39760
    Qty In Stock: 17
    Brand: Sierra

    Sierra Marine's replacement engine components are manufactured to meet or exceed OEM requirements. This ignition switch provides maximum corrosion protection and features a non-conductive glass-filled polyester housing that helps eliminate potential shorts. It also features an inner seal between the cylinder lock and contact plate. 

    Learn More
    MSRP: $27.69 $16.14
  3. s116252_lg_5
    3 1/2 in. Shieldsaust-C Marine Exhaust/Water Hose Per Foot | SIERRA-116-252-3120-1
    SIERRA-116-252-3120-1
    Qty In Stock: 6
    Brand: Sierra

    Features a corrugated exterior and is internally reinforced by wire to prevent hose from collapsing. Primarily used for connections in marine wet exhaust and engine water circulation applications, especially where significant bends of hose are required. Designed to resist heat, exhaust gases, ozone, antifreeze, and saltwater. 3 1/2 in. inside diameter. Price per foot.

    Learn More
    MSRP: $47.64 $34.02

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