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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

Items 97-108 of 584

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    1.5 Ohm Ignition Coil | Sierra 18-5433
    SIERRA-18-5433
    Qty In Stock: 23
    Brand: Sierra
    Standard 12 volt marine ignition coil is designed to be used with external resistor. Learn More
    MSRP: $57.69 $36.84
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  2. Small Image
    Delco 4 Cylinder Tune Up Kit | Sierra 18-5268
    SIERRA-18-5268
    Qty In Stock: 16
    Brand: Sierra
    Tune-up kit includes cap, rotor, points, and condenser for 4 cylinder marine engines with Delco conventional ignition distributors. Learn More
    MSRP: $45.69 $29.77
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  3. Sierra 18-5437 1.5 Ohm Ignition Coil
    1.5 Ohm Ignition Coil | Sierra 18-5437
    SIERRA-18-5437
    Qty In Stock: 12
    Brand: Sierra
    Standard 12 volt marine ignition coil is designed to be used with external resistor. Learn More
    MSRP: $54.39 $34.76
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  4. Small Image
    Gasoline Engine Oil Filter | Sierra 18-7876-1
    SIERRA-18-7876-1
    Qty In Stock: 90
    Brand: Sierra
    Sierra oil filter for GM based marine engines with GM long style oil filters. Learn More
    MSRP: $11.09 $8.52
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  5. GM Small Block Exhaust Manifold Gasket Set | Sierra 18-0604
    GM Small Block Exhaust Manifold Gasket Set | Sierra 18-0604
    SIERRA-18-0604
    Qty In Stock: 3
    Brand: Sierra
    Complete exhaust gasket set for a pair of Sierra 18-1997-1 GM small block center rise manifolds. Learn More
    MSRP: $39.99 $26.10
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  6. Small Image
    Rochester 2BBL Carburetor Repair Kit | Sierra 18-7086
    SIERRA-18-7086
    Qty In Stock: 9
    Brand: Sierra
    Repair kit for Rochester 2 BBL carburetor used on various OMC and Volvo Penta marine engines. Learn More
    MSRP: $53.99 $34.67
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  7. Small Image
    GM Small Block Circulating Water Pump | Sierra 18-3599-2
    SIERRA-18-3599-2
    Qty In Stock: 26
    Brand: Sierra

    Aftermarket engine circulating water pump for GM V6 and V8 small block marine engines

    Learn More
    MSRP: $192.59 $110.72
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  8. Small Image
    Solenoid | Sierra 18-5808
    SIERRA-18-5808
    Qty In Stock: 3
    Brand: Sierra
    Aftermarket 12V isolated base starter solenoid for many Johnson, Evinrude, and Mercury outboard motors. Learn More
    MSRP: $35.49 $32.93
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  9. Small Image
    Mercruiser 470 Alternator Conversion Kit | Sierra 18-5953-1
    SIERRA-18-5953-1
    Qty In Stock: 1
    Brand: Sierra

    Converts original stator type charging system on Mercruiser 470 3.7 liter marine engines to a conventional alternator charging system.

    Learn More
    MSRP: $1,355.69 $965.97
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  10. Sierra 18-5897 Dual Station Temperature Sender - 3/8-18 in. NPT
    Dual Station Temperature Sender - 3/8-18 in. NPT | Sierra 18-5897
    SIERRA-18-5897
    Qty In Stock: 21
    Brand: Sierra
    Engine temperature sending unit sends signal from 1 engine to 2 separate temperature gauges. Learn More
    MSRP: $35.59 $26.12
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  11. s11636905861_lg
    5/8 inch Fire-Acol Fuel Vent Hose, sold per foot | Sierra 116-369-0586-1
    SIERRA-116-369-0586-1
    Qty In Stock: 261
    Brand: Sierra

    Weather and UV resistant hose is primarily used for fuel vent line applications. 5/8 in. inside diameter. Price per foot.

    Learn More
    MSRP: $5.34 $4.45
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  12. Sierra 18-5913-1 GM Gear Reduction Marine Starter
    GM Gear Reduction Marine Starter | Sierra 18-5913-1
    SIERRA-18-5913-1
    Qty In Stock: 26
    Brand: Sierra

    Staggered bolt pattern bottom mounted Sierra 18-5913-1 marine starter fits GM engines with 14 in. flywheels.

    Learn More
    MSRP: $273.99 $273.99
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Items 97-108 of 584

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