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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 25-36 of 3275

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  1. Starter Motor | Volvo Penta 24074116
    Starter Motor | Volvo Penta 24074116
    VOLVO-24074116
    Qty In Stock: 52
    Brand: Volvo Penta

    Starter motor for many late model Volvo Penta engines including V6-200, V6-240, V6-280, V8-300, V8-350, V8-380 and V8-430 models.

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    MSRP: $524.00 $399.99
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    8.1L Platinum Spark Plug Set | Crusader RP030009
    CRU-RP030009
    Qty In Stock: 12
    Brand: Crusader
    Crusader RP030009 AC Delco Platinum Spark Plugs Learn More
    MSRP: $141.14 $118.30
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  3. Small Image
    Mercruiser 7.4L & 8.2L Delco EST Tune Up Kit | MMD Powerline M74DELCO
    MMD-M74DELCO
    Qty In Stock: 22
    Brand: MMD Powerline

    Comprehensive kit includes the items needed to tune-up Mercruiser 7.4L and 8.2L GM engines with Delco EST ignition system.

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    MSRP: $181.53 $165.03
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  4. Small Image
    GM 4.3L V6 Head Gasket Set | Fel-Pro 17211
    FP-17211
    Qty In Stock: 1
    Brand: Fel-Pro Gaskets

    Head gasket set for GM 4.3L V6 engine withcompsie valve covers, roller lifters, balance shaft and 12 bolt intake manifold mounting .

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    MSRP: $154.04 $112.68
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    Delco HVS V8 Tri-Pak Tune-Up Kit | United Marine 1-217
    UIW-1-217
    Qty In Stock: 49
    Brand: United Motor Products
    Delco HVS V8 Tri-Pak Tune-Up Kit Learn More
    MSRP: $206.01 $158.59
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  6. Small Image
    Gasoline Engine Oil Filter | Pleasurecraft Marine R077001
    PCM-R077001
    Qty In Stock: 236
    Brand: Pleasurecraft Marine
    OEM Pleasurecraft Marine engine oil filter also directly replaces discontinued Crusader 22679 filter. Learn More
    MSRP: $11.75 $8.51
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  7. Small Image
    High-Capacity Spin-On Gasoline Fuel Filter | Volvo Penta 3847644
    VOLVO-3847644
    Qty In Stock: 368
    Brand: Volvo Penta
    Replacement OEM Volvo Penta 6-micron fuel water filter fits many different Volvo Penta gasoline marine engines. Learn More
    MSRP: $24.60 $22.14
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  8. Volvo 21700445 Volvo Penta Impeller Kit
    Volvo Penta Impeller Kit | Volvo 21700445
    VOLVO-21700445
    Qty In Stock: 297
    Brand: Volvo Penta
    OEM Volvo Penta impeller kit that fits a variety of Volvo Penta gasoline marine engines with crankshaft mounted pumps. Learn More
    MSRP: $91.20 $79.73
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  9. j178002000_lg
    Heavy Duty Porta-Quick Oil Changer, 12V | Jabsco 17800-2000
    JABSCO-17800-2000
    Qty In Stock: 24
    Brand: Jabsco
    Uses boat's own 12-volt battery bank to quickly pump out engine oil with heavy-duty bronze impeller pump. Learn More
    MSRP: $367.31 $268.50
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  10. Mercruiser 4.3Liter Thunderbolt Vortec Tune-Up Kit MMD M43TBOLTGEN
    MerCruiser 4.3L Vortec Thunderbolt Tune Up Kit | MMD Powerline M43TBOLTGEN
    MMD-M43TBOLTGEN
    Qty In Stock: 53
    Brand: MMD Powerline

    Comprehensive kit includes the items needed to tune-up Gen+ Vortec Mercruiser 4.3 liter engines with Thunderbolt ignition system.

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    MSRP: $147.07 $133.70
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  11. Delco EST Conversion Kit 4.3L GM V6 | Sierra 18-5513
    Delco EST Conversion Kit 4.3L GM V6 | Sierra 18-5513
    SIERRA-18-5513
    Qty In Stock: 26
    Brand: Sierra

    Delco EST style ignition conversion kit for upgrade or replacement on 4.3L GM V6 engines.

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    MSRP: $795.19 $500.93
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    4 inch Crusader Exhaust Riser | Barr CR-20-98126
    BARR-CR-20-98126
    Qty In Stock: 88
    Brand: Barr Marine
    Direct replacement Crusader marine engine with center rise exhaust manifold. Learn More
    MSRP: $430.00 $307.24
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Items 25-36 of 3275

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