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Aftermarket Parts

Aftermarket Parts

  • Sierra Nis/Su 1/4 Mal Ful Con 55-883 18-8078
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    Sierra Nis/Su 1/4 Mal Ful Con 55-883 18-8078

    Sierra

    $17.59 $12.49
    Sierra Nis/Su 1/4 Mal Ful Con 55-883 18-8078
    Part Number:
    47-8078
    Availability:
    In Stock - Ships same or next business day.
    Connector:
    Tank - Male
    Fits:
    Nissan/Suzuki/Tohatsu
    Application:
    Fits all models - large inlet - mates with 18-8079
    Replaces:
    Suzuki 65740-95500 - 9905-00193 - 65750-95510 - 6570-95500
    Thread:
    1/4" NPT
    Hose:
    -
    $17.59 $12.49
    Add to Cart
  • Sierra Volvo OMC Exhaust Manifold GM Small Block 5.0-5.7L Vp#3857723 18-1986-1 18-1986-2
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    Sierra Volvo OMC Exhaust Manifold GM Small Block 5.0-5.7L Vp#3857723 18-1986-1 18-1986-2

    Sierra

    $455.59 $345.99
    Sierra Manifold-GM5.0-5.7L Vp#3857723 18-1986-1 , 18-1986-2 Sierra manifolds are painted; packaged and leak tested.
    Part Number:
    47-19862
    Availability:
    In Stock - Ships same or next business day.
    Replaces:
    Volvo 3852374-2 - 3857723 -
    3847501 - OMC 3852374 - 3857723
    Application:
    Port & Starboard - 5.0L & 5.7L GM (new style).
    Uses gasket 2949 and mounting kit 8502
    $455.59 $345.99
    Add to Cart
  • STA-BIL Gas Stabilizer 16oz 22207
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    STA-BIL Gas Stabilizer 16oz 22207

    STA-BIL

    $13.99 $11.70
    STA-BIL Gas Stabilizer 16oz 22207   Keeps fuel fresh for quick, easy starts after storage Removes water according to OEM specs to prevent corrosion Cleans carburetors and fuel injectors Protects engine from gum, varnish, rust, and corrosion ...
    Part Number:
    269-22207
    Availability:
    In Stock - Ships same or next business day.
    Size:
    16 oz.
    Treats:
    40 gal.
    $13.99 $11.70
    Add to Cart
  • Starbrite Grease Gun Lever F/14 Oz Cart. 28714
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    Starbrite Grease Gun Lever F/14 Oz Cart. 28714

    Starbrite

    $51.79 $38.99
    Starbrite Grease Gun Lever F/14 Oz Cart. 28714 • For use with all 14 and 14-1/2 oz• grease cartridges• Corrosion resistant bright metal finish• Engineered to maximize pressure with consistent flow of grease• Heavy gauge steel...
    Part Number:
    74-28714
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Grease Gun
    $51.79 $38.99
    Add to Cart
  • Starbrite Synthetic 80W90 Gear Lube 32Oz 27232
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    Starbrite Synthetic 80W90 Gear Lube 32Oz 27232

    Starbrite

    $20.89 $17.19
    Starbrite Synthetic 80W90 Gear Lube 32Oz 27232 • Synthetic Blend for API GL-5, MT-1 service SAE J2360, Mack GO-J• For long term performance synthetics are the best choice• Special extreme pressure and anti-wear additives Recommended for...
    Part Number:
    74-27232
    Availability:
    In Stock - Ships same or next business day.
    Grade:
    80W90
    Size:
    Qt.
    $20.89 $17.19
    Add to Cart
  • Uflex Steering Sys-Hyd Hi Perf Ob V2 Silversteer20B
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    Uflex Steering Sys-Hyd Hi Perf Ob V2 Silversteer20B

    Uflex

    $1,726.89 $1,449.99
    Uflex Steering Sys-Hyd Hi Perf Ob V2 Silversteer20B Designed for high performance applications with extreme rudder torque loads, the SilverSteer is the perfect solution. Bass boats, flats boats, tournament fishing boats will steer effortlessly with the...
    Part Number:
    216-SILVERSTEER20B
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Helm: Single engine 350 hp - Dual engine 600 hp
    PSI:
    1500
    $1,726.89 $1,449.99
    Add to Cart
  • Attwood Marine 90 Deg Fl Tank Vent with Black Cap 1670-1
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    Attwood Marine 90 Deg Fl Tank Vent with Black Cap 1670-1

    Attwood Marine

    $20.29 $14.99
    Attwood Marine 90 Deg Fl Tank Vent with Black Cap 1670-1 These vents help prevent water from entering the fuel tank, yet allow air to vent freely, during normal sea conditions and washdowns. This eliminates the need for an anti-siphon loop in the vent...
    Part Number:
    23-16701
    Availability:
    In Stock - Ships same or next business day.
    Type:
    Black
    Hose:
    5/8" I.D.
    Max Hull Thickness:
    9/16"
    Hole:
    3/4"
    Pkg.:
    Bulk
    $20.29 $14.99
    Add to Cart
  • Attwood Marine Primer Bulb Low-Perm 3/8 93038Lp7
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    Attwood Marine Primer Bulb Low-Perm 3/8 93038Lp7

    Attwood Marine

    $34.24 $21.99
    Attwood Marine Primer Bulb Low-Perm 3/8 93038Lp7 EPA COMPLIANT/CARB CERTIFIEDMulti layer bulb designed for high performance priming in the harsh marine environment. Multi-layer design prevents over-pressure bursting and vacuum collapse preventing proper...
    Part Number:
    23-93038LP7
    Availability:
    In Stock - Ships same or next business day.
    Hose:
    3/8" ID
    $34.24 $21.99
    Add to Cart
  • Centek 2 Check Valve Assembly 1200328
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    Centek 2 Check Valve Assembly 1200328

    Centek

    $226.79 $175.54
    Centek 2 Check Valve Assembly 1200328Lightweight, strong, non-corroding, and durable. Fittings are installed easily and their outside dimensions are compatible with tubing and approved marine rubber exhaust hoses.
    Part Number:
    383-1200328
    Availability:
    In Stock - Ships same or next business day.
    Dia.:
    4.34"
    Size:
    2"
    OD:
    2.00"
    Length:
    8.37"
    $226.79 $175.54
    Add to Cart
  • Centek Muffler-Vernalift 1.5X1.5 Top 1500018
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    Centek Muffler-Vernalift 1.5X1.5 Top 1500018

    Centek

    $338.39 $255.81
    Centek Muffler-Vernalift 1.5X1.5 Top 1500018Extremely effective in reducing engine exhaust noise and preventing water from returning to the engine. High strength design provides a significant safety margin over other existing fiberglass lift mufflers...
    Part Number:
    383-1500018
    Availability:
    In Stock - Ships same or next business day.
    $338.39 $255.81
    Add to Cart
  • CRC Grease-Dielectric Tune-Up .5oz 5109
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    CRC Grease-Dielectric Tune-Up .5oz 5109

    CRC

    $16.59 $13.99
    CRC Grease-Dielectric Tune-Up .5oz 5109 A unique, non-curing compound used for sealing, protecting & electrical insulating. Improves electrical performance by reducing arcing, voltage drop & other conditions. Also ideal for lubrication of...
    Part Number:
    77-05109
    Availability:
    In Stock - Ships same or next business day.
    Size:
    .5 Oz Tube
    $16.59 $13.99
    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.