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Aftermarket Parts

Aftermarket Parts

  • Sold Out, please call for ETA.
    Seastar Helm-Seastar 2 2.4 Hh5272-3

    Seastar Helm-Seastar 2 2.4 Hh5272-3

    Seastar

    $959.89 $849.34
    Seastar Helm-Seastar 2 2.4 Hh5272-3Efficient, safe and reliable. Easy to install. Feature helm rotor supported by 3 roller bearings, ball bearing piston race, simplified integrated metal construction, field replaceable shaft seal, 1/4'' NPT port threads,...
    Part Number:
    1-HH52723
    Availability:
    In Stock - Ships same or next business day.
    Type:
    SeaStar 2.4
    Mount:
    Front
    $959.89 $849.34
    Sold out - Special order may be available, please call 856-232-6969 ext1
  • Seastar Hose Kit-2Pc Seastar O/B 26 Ft Ho5126
    Add to Cart

    Seastar Hose Kit-2Pc Seastar O/B 26 Ft Ho5126

    Seastar

    $339.09 $289.99
    Seastar Hose Kit-2Pc Seastar O/B 26 Ft Ho5126 Includes two hoses - can be used with all SeaStar systems, except SeaStar PRO, BayStar, Capilano and 3-line inboard systems. ID of 5/16".
    Part Number:
    1-HO5126
    Availability:
    In Stock - Ships same or next business day.
    Length:
    26'
    Box:
    2
    $339.09 $289.99
    Add to Cart
  • Seastar Pro Series Tilt Mechanism Sh91800P
    Add to Cart

    Seastar Pro Series Tilt Mechanism Sh91800P

    Seastar

    $222.39 $169.99
    Seastar Pro Series Tilt Mechanism Sh91800P Tilt mechanism with flexible bellows and 3/4" tapered shaft. Requires tilt helm assembly.
    Part Number:
    1-SH91800P
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Tilt Mechanism
    $222.39 $169.99
    Add to Cart
  • Seastar Seal Kit Hp5608
    Add to Cart

    Seastar Seal Kit Hp5608

    Seastar

    $212.39 $169.99
    Seastar Seal Kit Hp5608
    Part Number:
    1-HP5608
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Gland/seal kit
    Fits:
    HC4645H/47H/48H/58H starboard side
    $212.39 $169.99
    Add to Cart
  • Seastar Tee Fitting End 3/8 Tube(3/Bg) Hf5530
    Add to Cart

    Seastar Tee Fitting End 3/8 Tube(3/Bg) Hf5530

    Seastar

    $71.19 $47.99
    Seastar Tee Fitting End 3/8 Tube(3/Bg) Hf5530 All Older Style SeaStar manual hydraulic steering systems. These are 3/8" compression fittings which utilize a 9/16"-24 extra fine thread. (Seastar Solutions New Updated cylinders with part numbers ending in...
    Part Number:
    1-HF5530
    Availability:
    In Stock - Ships same or next business day.
    Type:
    Tee Fitting
    Material:
    Brass
    Bag:
    3
    $71.19 $47.99
    Add to Cart
  • Sherwood Pump P Impeller Kit with Gaskets 09959K
    Add to Cart

    Sherwood Pump P Impeller Kit with Gaskets 09959K

    Sherwood Pump

    $45.59 $31.31
    Sherwood Pump P Impeller Kit with Gaskets 09959KNeoprene maximum temperature 130°F.Part numbers ending in "K" designate impeller kits which include impeller, gasket and O-ring.
    Part Number:
    762-09959K
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Impeller
    Blades:
    12
    Dia.:
    2-7/16"
    Width:
    1-1/4"
    Shaft:
    5/8"
    Keyway:
    3/16"
    $45.59 $31.31
    Add to Cart
  • Sherwood Water Pump Impeller Kit with Gaskets 10615k
    Add to Cart

    Sherwood Water Pump Impeller Kit with Gaskets 10615k

    Sherwood Pump

    $55.09 $41.99
    Sherwood Pump P Impeller Kit with Gaskets 10615K Neoprene maximum temperature 130°F.Part numbers ending in "K" designate impeller kits which include impeller, gasket and O-ring.
    Part Number:
    762-10615K
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Impeller
    Blades:
    12
    Dia.:
    2-9/16"
    Width:
    1-5/8"
    Shaft:
    5/8"
    Keyway:
    3/16"
    $55.09 $41.99
    Add to Cart
  • Sierra C-Gimbal Bearng Mc30-879194A01 18-21005
    Add to Cart

    Sierra C-Gimbal Bearng Mc30-879194A01 18-21005

    Sierra

    $120.79 $89.99
    Sierra C-Gimbal Bearng Mc30-879194A01 18-21005Refer to the Sierra catalog for complete application information.
    Part Number:
    47-21005
    Availability:
    In Stock - Ships same or next business day.
    Fits:
    Mercruiser Stern Drives
    Replaces:
    30-879194A01
    $120.79 $89.99
    Add to Cart
  • Sierra Filter-Oil Westerbeke# 36918 23-7800
    Add to Cart

    Sierra Filter-Oil Westerbeke# 36918 23-7800

    Sierra

    $13.59 $11.08
    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
    $13.59 $11.08
    Add to Cart
  • Sierra Filter-Water Separator OMC 10M 18-7946
    Add to Cart

    Sierra Filter-Water Separator OMC 10M 18-7946

    Sierra

    $13.99 $12.78
    Sierra Filter-Water Separator OMC 10M 18-7946Sierra fuel water separators remove over 98.8% of emulsified water from your gasoline. All filters flow @ 90 GPH to feed even the hungriest motor.Clear Bowls: Use for outboard and above deck installations...
    Part Number:
    47-7946
    Availability:
    In Stock - Ships same or next business day.
    Type:
    10 MIcron
    Replaces:
    OMC 502905
    $13.99 $12.78
    Add to Cart
  • Sierra Fuel Filter (Inline) 18-7712
    Add to Cart

    Sierra Fuel Filter (Inline) 18-7712

    Sierra

    $18.59 $15.99
    Sierra Fuel Filter (Inline) 18-7712
    Part Number:
    47-7712
    Availability:
    In Stock - Ships same or next business day.
    Replaces:
    Mercury/Mariner 35-16248
    Application:
    4/5 2 cyl (1999 & Up) - 4/5/6 4 stroke (1999 & Up) - 8/9.9 4-stroke (2005 & Up)
    $18.59 $15.99
    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.