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Aftermarket Parts

Aftermarket Parts

  • Sierra Eclipse 2 Fuel Gauge (E-F) 68390P
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    Sierra Eclipse 2 Fuel Gauge (E-F) 68390P

    Sierra

    $56.79 $42.99
    Sierra Eclipse 2 Fuel Gauge (E-F) 68390PSmart white and blue graphics on a black dial background; these very low profile bezels follow the curve of the lense to eliminate water trapping. Design with...
    Part Number:
    11-68390P
    Availability:
    In Stock - Ships same or next business day.
    Size:
    2"
    Type:
    Fuel Gauge
    Dial Range:
    (E - 1/2 - F)
    Sender Code:
    N/R
    $56.79 $42.99
    Add to Cart
  • Sierra Filter Oil/BRP #484839 18-7916
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    Sierra Filter Oil/BRP #484839 18-7916

    Sierra

    $15.59 $10.86
    Sierra Filter Oil/BRP #484839 18-7916Please see manufacturer application guide for complete application references.
    Part Number:
    47-7916
    Availability:
    In Stock - Ships same or next business day.
    Replaces:
    Johnson Evinrude: 434839
    $15.59 $10.86
    Add to Cart
  • Sierra Filter-Oil Westerbeke# 36918 23-7800
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    Sierra Filter-Oil Westerbeke# 36918 23-7800

    Sierra

    $15.09 $12.40
    Sierra Filter-Oil Westerbeke# 36918 23-7800
    Part Number:
    47-237800
    Availability:
    In Stock - Ships same or next business day.
    OEM #:
    Westerbeke #36918
    Fits:
    4.5 BCG(60Hz)/3.75 BCG(50Hz) - 4.5 BCGB(60Hz)/3.75 BCGB(50Hz) - 4.5 BCGTC(60Hz)/3.75 BCGTC(50Hz) 5.0 BCG(60Hz)/4.2 BCG(50HZ) - 5.0 BCGA(60Hz)/5.2 BCGA(50Hz) - 6.5 TWG(60Hz)/4.9 TWG(50Hz) 7.0 BCG(60Hz)/5.0 BCG(50Hz) - 7.0 BCGA(60Hz)/5.0 BCGA(50Hz) - 7
    $15.09 $12.40
    Add to Cart
  • Sierra Filter-Universal Inline Fuel 5/16In 18-7830
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    Sierra Filter-Universal Inline Fuel 5/16In 18-7830

    Sierra

    $9.19 $8.99
    Sierra Filter-Universal Inline Fuel 5/16In 18-7830
    Part Number:
    47-7830
    Availability:
    In Stock - Ships same or next business day.
    Replaces:
    Mercury 35-16494-1 -
    35-816296 1 - T1 - Q2 -
    Johnson/Evinrude 398327
    Yamaha 65W-24251-10-00
    Application:
    5/16" Fuel line
    $9.19 $8.99
    Add to Cart
  • Sierra Fuel Line 8Ft Yamaha Epa 18-8017Ep-2
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    Sierra Fuel Line 8Ft Yamaha Epa 18-8017Ep-2

    Sierra

    $87.09 $71.36
    Sierra Fuel Line 8Ft Yamaha Epa 18-8017Ep-2Complete fuel line assemblies are all EPA compliant for outboards with above deck applications and are resistant to Ethanol fuel. NEW FKP (low permeation)...
    Part Number:
    47-8017EP2
    Availability:
    In Stock - Ships same or next business day.
    Application:
    OE #6YL-24306-60-00 - Fits F75-F250 and 115-300hp
    Hose:
    3/8" x 8'
    $87.09 $71.36
    Add to Cart
  • Sierra Impeller Honda 19210-Zw1-003 18-3056
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    Sierra Impeller Honda 19210-Zw1-003 18-3056

    Sierra

    $37.59 $21.72
    Sierra Impeller Honda 19210-Zw1-003 18-3056
    Part Number:
    47-3056
    Availability:
    In Stock - Ships same or next business day.
    Fits:
    For Alpha I-Gen2 S/N D494569 & Above
    Mercruiser Vazer - Force - Honda
    Replaces:
    47-43026-2 - T2 - 19210-ZW1-003
    $37.59 $21.72
    Add to Cart
  • Sierra Impeller Kit-Westerbeke# 33112 23-3302
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    Sierra Impeller Kit-Westerbeke# 33112 23-3302

    Sierra

    $44.19 $41.43
    Sierra Impeller Kit-Westerbeke# 33112 23-3302
    Part Number:
    47-233302
    Availability:
    In Stock - Ships same or next business day.
    Replaces:
    Westerbeke #33112
    Fits:
    6.5 TWG(60Hz)/4.9 TWG(50Hz) - 8.0 TWG(60Hz)/6.4 TWG(50Hz) - 8.5 BTG(60Hz)/6.5 BTG(50Hz) - 11.0 TWG(60Hz)/8.5 TWG(50Hz) - 12.5 BTG(60Hz)/10.0 BTG(50Hz) - 15.0 BTG(60Hz)/12.0 BTG(50Hz) - 15.0 BTGA(60Hz)/12.0 BTGA(50Hz) - 20.0 WTA(60Hz)/16.0 WTA(50Hz)
    $44.19 $41.43
    Add to Cart
  • Sierra Water Pump Kit E/J OMC#394711 18-3327
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    Sierra Water Pump Kit E/J OMC#394711 18-3327

    Sierra

    $57.59 $44.06
    Sierra Water Pump Kit E/J OMC#394711 18-3327Includes: Impeller O.E.# 386084Housing O.E.# 435390Wear Plate O.E.# 318995Water Pump Cup O.E.# 324097Grommet O.E.# 302497Grommet O.E.# 327035Oil Seal O.E.#...
    Part Number:
    47-3327
    Availability:
    In Stock - Ships same or next business day.
    Replaces:
    OMC 394711 - 386697 - 391698
    $57.59 $44.06
    Add to Cart
  • Sierra Wire Set GM 5.0L-5.7L Conv 18-8802-1
    Add to Cart

    Sierra Wire Set GM 5.0L-5.7L Conv 18-8802-1

    Sierra

    $92.29 $69.66
    Sierra Wire Set GM 5.0L-5.7L Conv 18-8802-1Magnetic Suppression Core manufactured for your specific application.Kevlar® core for maximum durability and long lifeDurable stainless steel wound...
    Part Number:
    47-88021
    Availability:
    In Stock - Ships same or next business day.
    Application:
    Mercruiser - 5.7L SKI - 8 cylinder - conventional ignition. OMC - 5.0L ('82-'88) - 5.7L ('82-'89) - 5.7L King cobra ('88) - 185 ('75-'80) - 200 ('79-'81) - 225 ('78) - 225 ('78 M models) - 230 ('79-'81) - 230 I/B LH & RH ('76) - 260 ('79-'81 models w
    $92.29 $69.66
    Add to Cart
  • Sierra Wire-9In Hi Perf Plug-MerCruiser 18-5228-1
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    Sierra Wire-9In Hi Perf Plug-MerCruiser 18-5228-1

    Sierra

    $33.09 $21.26
    Sierra Wire-9In Hi Perf Plug-MerCruiser 18-5228-1Magnetic Suppression Core manufactured for your specific application.Kevlar® core for maximum durability and long lifeDurable stainless steel wound...
    Part Number:
    47-52281
    Availability:
    In Stock - Ships same or next business day.
    Application:
    Mercury/Mariner - 9" wire
    $33.09 $21.26
    Add to Cart
  • Starbrite Bilge Oil Pads 3/8 5 Pack - 17X19 91845
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    Starbrite Bilge Oil Pads 3/8 5 Pack - 17X19 91845

    Starbrite

    $16.39 $10.81
    Starbrite Bilge Oil Pads 3/8 5 Pack - 17X19 91845 • The most effective way to clean up or avoid an oil or fuel spill• Quickly absorbs oil and fuel, but will not absorb water• Made of high-quality,...
    Part Number:
    74-91845
    Availability:
    In Stock - Ships same or next business day.
    Size:
    17" x 19" x 3/8"
    Pack:
    5
    $16.39 $10.81
    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.