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Aftermarket Parts

Aftermarket Parts

  • Seastar Clamp Block Kit Short Post Sa27578P

    Seastar Clamp Block Kit Short Post Sa27578P

    Seastar

    $178.99 $139.99
    Seastar Clamp Block Kit Short Post Sa27578P
    Part Number:
    1-SA27578P
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Inboard Clamp Block - 2-1/4" stand off - For ski boat inboard - Heavy Duty with Black Metal Flake Finish
    $178.99 $139.99
  • Seastar Dual Station Kit Ca68065P

    Seastar Dual Station Kit Ca68065P

    Seastar

    $56.79 $37.44
    Seastar Dual Station Kit Ca68065PHardware kit for single or dual station installations. For use with 3300/33C type cables only.
    Part Number:
    1-CA68065P
    Availability:
    In Stock - Ships same or next business day.
    $56.79 $37.44
  • Seastar Dual Station Unit-Throttle 207572

    Seastar Dual Station Unit-Throttle 207572

    Seastar

    $226.79 $214.99
    Seastar Dual Station Unit-Throttle 207572 The Dual Station (DS) unit is designed for inboard, sterndrive, or outboard boaters that like using one lever to do both throttle and shift in their dual station boat. The Station Selector allows smooth...
    Part Number:
    1-207572
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Throttle Unit
    $226.79 $214.99
  • Seastar Elbow 3/8T X 1/4P Male (3) Hf5529

    Seastar Elbow 3/8T X 1/4P Male (3) Hf5529

    Seastar

    $70.39 $57.99
    Seastar Elbow 3/8T X 1/4P Male (3) Hf5529 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-HF5529
    Availability:
    In Stock - Ships same or next business day.
    Type:
    90 Deg - Elbow Fitting
    Material:
    Aluminum
    Bag:
    3
    $70.39 $57.99
  • Seastar Hose Kit-2Pc Seastar O/B 24 Ft Ho5124

    Seastar Hose Kit-2Pc Seastar O/B 24 Ft Ho5124

    Seastar

    $267.09 $198.04
    Seastar Hose Kit-2Pc Seastar O/B 24 Ft Ho5124Includes 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-HO5124
    Availability:
    In Stock - Ships same or next business day.
    Length:
    24'
    Box:
    2
    $267.09 $198.04
  • Seastar No-Feedback Rotary Helm/Single Sh4910

    Seastar No-Feedback Rotary Helm/Single Sh4910

    Seastar

    $217.69 $159.99
    Seastar No-Feedback Rotary Helm/Single Sh4910   Two bolts secure QC cable to helm One bolt holds spent travel tube. No feedback feature
    Part Number:
    1-SH4910P
    Availability:
    In Stock - Ships same or next business day.
    Type:
    Single Helm
    $217.69 $159.99
  • Seastar Orb Fitting-90Deg Elbow 2Pk Hf6004

    Seastar Orb Fitting-90Deg Elbow 2Pk Hf6004

    Seastar

    $57.79 $52.99
    Seastar Orb Fitting-90Deg Elbow 2Pk Hf6004 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-HF6004
    Availability:
    In Stock - Ships same or next business day.
    Type:
    90 Deg - Elbow
    Material:
    Aluminum
    Bag:
    2
    $57.79 $52.99
  • Seastar Seastar Cylinder Ba 135 7 Atm Hc53133

    Seastar Seastar Cylinder Ba 135 7 Atm Hc53133

    Seastar

    $956.79 $690.91
    Seastar Seastar Cylinder Ba 135 7 Atm Hc53133These cylinders are for single and dual rudder vessels with two axis articulation and offer easy autopilot interface. Cylinders are supplied with bleeder fittings.
    Part Number:
    1-HC53133
    Availability:
    In Stock - Ships same or next business day.
    Type:
    BA135-7ATM
    Body Dia.:
    1.5"
    Shaft:
    .625"
    $956.79 $690.91
  • Seastar Seastar Helm Backmount Kit Ha5418

    Seastar Seastar Helm Backmount Kit Ha5418

    Seastar

    $81.89 $54.99
    Seastar Seastar Helm Backmount Kit Ha5418 Square backplate kit for the 5271 and 5272 SeaStar helms. Used to retrofit new Seastar standard helm into hole cutouts
    Part Number:
    1-HA5418
    Availability:
    In Stock - Ships same or next business day.
    $81.89 $54.99
  • Sold Out, please call for ETA.
    Seastar Throttle Knob (Red Gr00Ves) Ca69052P

    Seastar Throttle Knob (Red Gr00Ves) Ca69052P

    Seastar

    $54.79 $44.99
    Seastar Throttle Knob (Red Gr00Ves) Ca69052P Features both visual and tactile distinction for throttle and shift, in keeping with the latest ABYC guidelines. Handles replace CH5400P & CH5600P twin control handles. Knobs replace most other brand...
    Part Number:
    1-CA69052P
    Availability:
    In Stock - Ships same or next business day.
    Description:
    SS Grooved Throttle Knob
  • Seastar Tilt Helm Hps Rotary Sh91650P

    Seastar Tilt Helm Hps Rotary Sh91650P

    Seastar

    $227.89 $179.99
    Seastar Tilt Helm Hps Rotary Sh91650P Single cable tilt helm. For power-assisted stern drives. Requires separate tilt mechanism SH91800P.
    Part Number:
    1-SH91650P
    Availability:
    In Stock - Ships same or next business day.
    $227.89 $179.99
  • Seastar Tournament 2 O/B Cyl Front Mnt Hc6845

    Seastar Tournament 2 O/B Cyl Front Mnt Hc6845

    Seastar

    $1,382.89 $1,039.45
    Seastar Tournament 2 O/B Cyl Front Mnt Hc6845Engineered to provide today's high-powered offshore tournament boats and other high-performance vessels with precise, smooth and reliable steering. This heavy-duty cylinder is designed to work with all new and...
    Part Number:
    1-HC6845
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Outboard cylinder - front mt
    $1,382.89 $1,039.45

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.