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Aftermarket Parts

Aftermarket Parts

  • Seachoice Black Molded Clam Shell-Large 16191
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    Seachoice Black Molded Clam Shell-Large 16191

    Seachoice

    $10.99 $7.77
    Seachoice Black Molded Clam Shell-Large 16191 UV and weather resistant and great for routing cables, wire, etc.
    Part Number:
    50-16191
    Availability:
    In Stock - Ships same or next business day.
    Size:
    2" x 2-3/8"
    Color:
    Black
    Pack:
    1 pr.
    $10.99 $7.77
    Add to Cart
  • Seachoice Black Molded Clam Shell-Small 13311
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    Seachoice Black Molded Clam Shell-Small 13311

    Seachoice

    $12.06 $9.06
    Seachoice Black Molded Clam Shell-Small 13311 UV and weather resistant and great for routing cables, wire, etc.
    Part Number:
    50-16181
    Availability:
    In Stock - Ships same or next business day.
    Size:
    1-7/16" x 1-11/16"
    Color:
    Black
    Pack:
    1 pr.
    $12.06 $9.06
    Add to Cart
  • Seachoice Econ Tank Fitt J/E 1/4 Npt 20501
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    Seachoice Econ Tank Fitt J/E 1/4 Npt 20501

    Seachoice

    $12.94 $9.55
    Seachoice Econ Tank Fitt J/E 1/4 Npt 20501 Precision engineered fuel connectors
    Part Number:
    50-20501
    Availability:
    In Stock - Ships same or next business day.
    Connector:
    Tank Fitting - Male
    Fits:
    OMC (Evinrude/Johnson)
    Material:
    Brass
    Thread:
    1/4" NPT
    Hose:
    -
    $12.94 $9.55
    Add to Cart
  • Seachoice Fuel Conn-Female Yam/Merc/Mar 20621
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    Seachoice Fuel Conn-Female Yam/Merc/Mar 20621

    Seachoice

    $10.27 $8.99
    Seachoice Fuel Conn-Female Yam/Merc/Mar 20621 Precision engineered fuel connectors
    Part Number:
    50-20621
    Availability:
    In Stock - Ships same or next business day.
    Connector:
    Hose Fitting - Female
    Fits:
    Yamaha/Mercury/Mariner
    Material:
    Hi-Impact Nylon
    Type:
    Deluxe
    Thread:
    -
    Hose:
    5/16" Barb
    $10.27 $8.99
    Add to Cart
  • Seachoice Fuel Line Univ Low Perm 21361
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    Seachoice Fuel Line Univ Low Perm 21361

    Seachoice

    $49.84 $39.99
    Seachoice Fuel Line Univ Low Perm 21361 Meets all EPA, CARB, USCG and ABYC Requirements •  • Includes: Low permeation primer bulb, fuel line fittings, stainless steel hose clamps and 3/8" heavy duty, kink resistant fuel...
    Part Number:
    50-21361
    Availability:
    In Stock - Ships same or next business day.
    Application:
    Universal (w/o connectors)
    Size:
    3/8" x 7'
    $49.84 $39.99
    Add to Cart
  • Seachoice Fuel Pump Cube Kit 11.5-9.0Psi 12V 20321
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    Seachoice Fuel Pump Cube Kit 11.5-9.0Psi 12V 20321

    Seachoice

    $122.24 $82.99
    Seachoice Fuel Pump Cube Kit 11.5-9.0Psi 12V 20321 Compatible with gasoline, diesel, biodiesel, blended alcohol fuels and fuel additives • For 12 volt systems onlyNot intended for aircraft use.Easy to install • Coast Guard...
    Part Number:
    50-20321
    Availability:
    In Stock - Ships same or next business day.
    PSI:
    11.5-9.0
    GPH:
    32
    OEM #:
    40185
    Volts:
    12
    $122.24 $82.99
    Add to Cart
  • Seachoice Honda Bf - Aluminum 50-95411
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    Seachoice Honda Bf - Aluminum 50-95411

    Seachoice

    $65.68 $44.83
    Seachoice Honda Bf - Aluminum 50-95411 Cadmium free, environmentally friendly. • Aluminum: For salt and brackish water • Conform to: Mil-Spec A-24779(SH)  • Magnesium: For freshwater...
    Part Number:
    50-95411
    Availability:
    In Stock - Ships same or next business day.
    Material:
    Aluminum
    $65.68 $44.83
    Add to Cart
  • Seachoice Honda Bf - Magnesium 50-95421
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    Seachoice Honda Bf - Magnesium 50-95421

    Seachoice

    $82.51 $56.99
    Seachoice Honda Bf - Magnesium 50-95421 Cadmium free, environmentally friendly. • Aluminum: For salt and brackish water • Conform to: Mil-Spec A-24779(SH)  • Magnesium: For freshwater...
    Part Number:
    50-95421
    Availability:
    In Stock - Ships same or next business day.
    Material:
    Magnesium
    $82.51 $56.99
    Add to Cart
  • Seachoice Primer Bulb 5/16 Low Perm 21321
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    Seachoice Primer Bulb 5/16 Low Perm 21321

    Seachoice

    $24.96 $16.15
    Seachoice Primer Bulb 5/16 Low Perm 21321 Meets all EPA, CARB, USCG and ABYC Requirements •  • High output primer bulb with 60% more output per pump than leading competitorsHigh flow double check valves ensure fast priming...
    Part Number:
    50-21321
    Availability:
    In Stock - Ships same or next business day.
    Fits:
    5/16" ID Fuel Hose
    $24.96 $16.15
    Add to Cart
  • Special Order! See availaility for details
    Seachoice Reed Switch 350Mm 14 50-15561
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    Seachoice Reed Switch 350Mm 14 50-15561

    Seachoice

    $96.16 $82.99
    Seachoice Reed Switch 350Mm 14 50-15561 Compatible with most fuel gauges on the market today, with 33 (full) and 240 (empty) ohm gauges, and no moving mechanical parts makes them extremely durableOur senders feature stainless steel immersion tubes,...
    Part Number:
    50-15561
    Availability:
    In Stock - Ships same or next business day.
    Length:
    14"
    $96.16 $82.99
    Add to Cart
  • Seachoice Steering Wheel W/Knob SS 15.5 28531
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    Seachoice Steering Wheel W/Knob SS 15.5 28531

    Seachoice

    $280.21 $179.45
    Seachoice Steering Wheel W/Knob SS 15.5 28531 3 spoke • Stainless steel fits 3/4" tapered shaft • Includes 5/8" - 18 and 1/2" - 20 nut
    Part Number:
    50-28531
    Availability:
    In Stock - Ships same or next business day.
    Dia.:
    15-1/2"
    $280.21 $179.45
    Add to Cart
  • Seachoice Universal Fuel/Water Separator 20901
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    Seachoice Universal Fuel/Water Separator 20901

    Seachoice

    $46.09 $33.75
    Seachoice Universal Fuel/Water Separator 20901 28 Micron filterUniversal 3/8" Ports. •  • 20901: Fits most 2 and 4 cycle gasoline enginesPowder coated bracket includedIncludes 2 brass plugsOne complete set per boxReplaces...
    Part Number:
    50-20901
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Fuel/Water Separator Kit
    $46.09 $33.75
    Add to Cart
  • Seastar 33LU Cable with Knob T-Handle CC343
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    Seastar 33LU Cable with Knob T-Handle CC343

    Seastar

    $129.79 $109.86
    Seastar 33 LU Cable with Knob T-Handle CC343 Flexible push-pull cable for remote control of choke, throttle, shut off, fuel valves, vents and many other applications. Solid stainless steel core wire w/HDPE liner and outer casing for durability and...
    Part Number:
    NW-1CC343
    Availability:
    In Stock - Ships same or next business day.
    $129.79 $109.86
    Choose Options
  • Seastar 3400/3300 Adapt-Kit OMC Only Ca27320P
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    Seastar 3400/3300 Adapt-Kit OMC Only Ca27320P

    Seastar

    $37.99 $29.99
    Seastar 3400/3300 Adapt-Kit OMC Only Ca27320P For use with 3300 and 3300HP cable. Quick installation and maximum adjustment at engine. Includes throttle and shift adapters.
    Part Number:
    1-CA27320P
    Availability:
    In Stock - Ships same or next business day.
    For:
    OMC
    $37.99 $29.99
    Add to Cart

Aftermarket Boat Parts & Marine Engine Supplies

Looking for dependable aftermarket boat parts? PowerBoatSupply.com carries a wide selection of aftermarket marine parts, engine supplies, oils, fuel components, steering parts, anodes, tools, and maintenance essentials for boat owners and marine professionals.

Whether you're handling routine service, replacing worn components, or stocking up for the season, our aftermarket parts selection helps keep your boat running smoothly and reliably.

Marine Engine Parts & Maintenance Essentials

Keep your motor protected and performing with key maintenance categories like engine parts, motor oil, marine oil systems and accessories, and lubricants, fluids and sealants.

  • Engine Parts – Replacement components for service and repair
  • Motor Oil – Marine-grade oils for routine maintenance
  • Oil Systems & Accessories – Helpful products for oil changes and upkeep
  • Lubricants, Fluids & Sealants – Protect, seal, and maintain marine systems

Fuel, Steering & Control Parts

Reliable fuel delivery and responsive steering are critical on the water. Browse marine fuel parts and steering and controls to help maintain safer handling, smoother operation, and dependable performance.

  • Fuel Parts – Components for reliable fuel system performance
  • Steering & Controls – Parts that help improve control and handling
  • Engine Instruments – Monitor key systems while underway
  • Engine Tools – Tools for maintenance, repair, and service work

Anodes, Instruments & Service Tools

Small parts can make a big difference in long-term protection and performance. Shop marine anodes, engine instruments, and engine tools to help protect your boat, monitor performance, and complete service work more efficiently.

  • Anodes – Help protect metal components from corrosion
  • Engine Instruments – Gauges and monitoring products for marine engines
  • Engine Tools – Service tools for DIY boaters and marine technicians
  • Maintenance Supplies – Everyday essentials for seasonal upkeep

Yamaha Oil Change Kits & Routine Service Products

Staying ahead of routine service is one of the best ways to protect your investment. PowerBoatSupply.com also carries Yamaha oil change kits and other service products that make maintenance easier and more convenient.

  • Oil Change Kits – Convenient service kits for scheduled maintenance
  • Marine Oils – Protect engines under real boating conditions
  • Sealants & Fluids – Support repairs, installs, and regular service
  • Tools & Accessories – Make maintenance faster and cleaner

Why Buy Aftermarket Marine Parts from PowerBoatSupply.com?

PowerBoatSupply.com helps boat owners find reliable parts and maintenance products without the guesswork. From routine oil service to engine repair, fuel system work, corrosion protection, and steering maintenance, our aftermarket category is built to support the jobs boaters handle every season.

  • Wide selection of aftermarket boat parts and marine supplies
  • Products for DIY boat owners and marine professionals
  • Helpful categories for seasonal service and repairs
  • Fast shipping and dependable support

Shop aftermarket boat parts today and get the engine parts, oils, fuel components, steering supplies, anodes, tools, and maintenance products you need to keep your boat ready for the water.