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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 49-60 of 3254

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  1. Sierra 116-254-3120 Exoflex Hose
    3-1/2 inch Exoflex Exhaust/Water Hose, sold per foot | Sierra 116-254-3120-1
    SIERRA-116-254-3120-1
    Qty In Stock: 83
    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: $40.82 $34.02
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  2. Volvo Penta Crank Driven Raw Water Pump With Pulley - 21212799
    Crank Driven Raw Water Pump | Volvo Penta 21212799
    VOLVO-21212799
    Qty In Stock: 79
    Brand: Volvo Penta
    OEM crankshaft mounted sea water pump with serpentine pulley fits various Volvo Penta GM 4.3L, 5.0L, & 5.7L marine engines. Learn More
    MSRP: $592.00 $511.05
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  3. Large Image
    Throttle Position Sensor Kit 8.1L | Volvo Penta 21157475
    VOLVO-21157475
    Qty In Stock: 23
    Brand: Volvo Penta

    Original equipment throttle control update kit includes a new throttle position sensor and mounting hardware to fit a variety of 8.1L Volvo Penta engine models.

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    MSRP: $428.00 $373.06
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  4. Thermostat Kit | Indmar 491010
    Thermostat Kit | Indmar 491010
    IND-491010
    Qty In Stock: 6
    Brand: Indmar
    Thermostat Kit Learn More
    MSRP: $60.25 $47.23
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  5. Small Image
    Mercruiser GM Small Block Exhaust Manifold | Barr MC-1-77235
    BARR-MC-1-77235
    Qty In Stock: 10
    Brand: Barr Marine
    Starboard side log style manifold fits Mercruiser 198, 228, 255, 260, & 898 model marine engines. Learn More
    MSRP: $691.00 $437.41
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  6. Small Image
    Engine Oil Filter | Volvo Penta 8692305
    VOLVO-8692305
    Qty In Stock: 515
    Brand: Volvo Penta
    Late model Volvo Penta cartridge style oil filter insert. Learn More
    MSRP: $17.40 $17.05
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  7. Volvo Penta 23219274 Motor Oil Gallon Vds-4.5 Sae 15W-40
    VDS-4.5 Diesel Engine Oil SAE 15W-40 - 1 Gallon | Volvo Penta 23219274
    VOLVO-23219274
    Qty In Stock: 738
    Brand: Volvo Penta

    Volvo Penta brand high performance heavy duty VDS-4.5 15W-40 diesel engine oil in a 1 gallon plastic jug.

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    MSRP: $40.00 $37.68
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  8. GM V8 EST Distributor | Crusader RA107039D
    GM V8 EST Distributor | Crusader RA107039D
    CRU-RA107039D
    Qty In Stock: 16
    Brand: Crusader

    Electronic distributor for Crusader GM V8 marine engines with Delco EST ignition.

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    MSRP: $531.27 $509.69
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  9. Small Image
    Cummins Raw Water Pump | Sherwood P1730C
    SHER-P1730C
    Qty In Stock: 19
    Brand: Sherwood Pumps
    Replacement bronze sea water pump for cooling various Cummins 6C diesel marine engines. Learn More
    MSRP: $1,244.02 $698.87
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  10. 351W Distributor IG-D231800_SM
    Ford 351W Marine Electronic Distributor | Pertronix D231800
    IG-D231800
    Qty In Stock: 7
    Brand: Pertronix
    Billet aluminum electronic distributor with twist lock cap fasteners for Ford 351 cu. in. Windsor marine engines. Learn More
    MSRP: $417.40 $379.45
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  11. Small Image
    3 inch Exhaust Elbow Outlet | Crusader 98068
    CRU-98068
    Qty In Stock: 28
    Brand: Crusader
    Replacement OEM Crusader exhaust elbow fits many Crusader V8 marine engines. Learn More
    MSRP: $165.83 $160.50
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  12. Quicksilver 8M0047215 Gen III Cool Fuel Module Kit
    Gen III Cool Fuel Module Kit | Quicksilver 8M0047215
    QS-8M0047215
    Qty In Stock: 1
    Brand: Quicksilver

    Gen III Cool Fuel Module serivice kit for Mercruiser 5.0L thru 8.1L engines includes the complete module with improved hose connections.

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    MSRP: $1,987.69 $1,806.99
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Items 49-60 of 3254

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