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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 3275

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    Crusader Prestolite V8 Spark Plug Wire Set | United Marine 201
    UIW-201
    Qty In Stock: 26
    Brand: United Motor Products
    Crusader Prestolite V8 Spark Plug Wire Set Learn More
    MSRP: $89.67 $70.61
    Add to Wishlist
  2. Sherwood 10615K Neoprene Impeller Kit
    Impeller Kit | Sherwood 10615K
    SHER-10615K
    Qty In Stock: 247
    Brand: Sherwood Pumps
    Original Sherwood impeller kit protects marine engines by maintaining consistent engine temperatures. Learn More
    MSRP: $54.33 $36.20
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  3. Small Image
    ETX Starboard Aluminum Exhaust Manifold | Indmar 531300E
    IND-531300E
    Qty In Stock: 5
    Brand: Indmar

    OEM Indmar one piece exhaust manifold used on Vortec 5.7 liter Monsoon & 6.2 liter Hammerhead marine engines

    Learn More
    MSRP: $1,896.84 $1,511.70
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  4. Small Image
    Impeller Kit with Gasket & O-Ring | Crusader RP061017
    CRU-RP061017
    Qty In Stock: 68
    Brand: Crusader
    Original Crusader raw water pump impeller kit. Learn More
    MSRP: $64.20 $54.13
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  5. Small
    Starboard Side Exhaust Manifold | Crusader 97992
    CRU-97992
    Qty In Stock: 15
    Brand: Crusader
    OEM Crusader starboard exhaust manifold fits Crusader GM 7.4L & 8.2L big block marine engines. Learn More
    MSRP: $299.97 $290.26
    Add to Wishlist
  6. GM Easy Oil Drain Kit - MPI-308-0380
    Mercruiser Engine Oil Drain Kit | MPI 308-0380
    MPI-308-0380
    Qty In Stock: 10
    Brand: MPI
    MPI's oil drain kit allows you to quickly & easily drain Mercruiser inboard marine engines with a 12 x 1.75 mm thread oil pan drain plug port. Learn More
    MSRP: $56.23 $50.38
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  7. Indmar 531400HL EXTCAT Starboard Aluminum Catalyst Exhaust Manifold
    EXTCAT Starboard Aluminum Catalyst Exhaust Manifold | Indmar 531400HL
    IND-531400HL
    Qty In Stock: 7
    Brand: Indmar

    OEM Indmar one piece exhaust manifold with catalyst exhaust element for Vortec 5.7 liter Monsoon & 6.2 liter Hammerhead marine engines.

    Learn More
    MSRP: $1,924.80 $1,603.70
    Add to Wishlist
  8. 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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  9. cru-rk028021a_1
    Exhaust Manifold Kit 7.4, 8.1 & 8.2 Liter | Crusader RK028021A
    CRU-RK028021A
    Qty In Stock: 42
    Brand: Crusader

    Exhaust manifold kit  for 7.4, 8.1L or 8.2L Crusader engines that includes the SAE and metric fasteners to fit all three applications.

    Learn More
    MSRP: $500.40 $488.76
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  10. United Marine C-535B Delco EST Ignition Coil
    Delco EST Ignition Coil | United Marine C-535B
    UIW-C-535B
    Qty In Stock: 18
    Brand: United Motor Products
    Delco EST Ignition Coil Learn More
    MSRP: $65.88 $62.59
    Add to Wishlist
  11. Indmar 531401HL EXTCAT Port Aluminum Catalyst Exhaust Manifold
    EXTCAT Port Aluminum Catalyst Exhaust Manifold | Indmar 531401HL
    IND-531401HL
    Qty In Stock: 0
    Brand: Indmar
    OEM Indmar one piece exhaust manifold with catalyst exhaust element for Vortec 5.7L Monsoon & 6.2L Hammerhead marine engines. Learn More
    MSRP: $1,924.80 $1,603.70
    Add to Wishlist
  12. Volvo Penta 3861326 4 Pack Platinum Spark Plug
    4 Pack Platinum Spark Plug | Volvo Penta 3861326
    VOLVO-3861326
    Qty In Stock: 33
    Brand: Volvo Penta
    Spark Plug Kit Learn More
    MSRP: $56.40 $44.74
    Add to Wishlist

Items 97-108 of 3275

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