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Aftermarket Parts

Aftermarket Parts

  • Seastar Cylinder Hose Kit 18" S Star Ha5731

    Seastar Cylinder Hose Kit 18" S Star Ha5731

    Seastar

    $130.09 $121.99
    Seastar Cylinder Hose Kit 18" S Star Ha5731 Contains two hoses 18" long. For single cylinder applications. Supplied with 1/2" swivel flare nuts on each end. Required of steering systems installed with copper tubing to accommodate slight cylinder...
    Part Number:
    1-HA5731
    Availability:
    In Stock - Ships same or next business day.
    $130.09 $121.99
  • Seastar Cylinder Outboard Fm Pro Hc6345-3

    Seastar Cylinder Outboard Fm Pro Hc6345-3

    Seastar

    $1,219.99 $1,064.99
    Seastar Cylinder Outboard Fm Pro Hc6345-3The SeaStar Pro Front Mount Outboard Cylinders have keyed support brackets to prevent racking of the cylinder which gives it a more solid feel and more robust bushings. Suited for all those critical high speed,...
    Part Number:
    1-HC63453
    Availability:
    In Stock - Ships same or next business day.
    Description:
    SeaStar Pro
    Mount:
    Pivot
    $1,219.99 $1,064.99
  • Seastar Fill & Vent Plug Kit SStar3 Ha5450

    Seastar Fill & Vent Plug Kit SStar3 Ha5450

    Seastar

    $134.29 $109.99
    Seastar Fill & Vent Plug Kit SStar3 Ha5450 Will facilitate filling and purging of steering system at a more convenient and accessible area than at a helm pump. Contains thru-dash fitting, waterproof vent plug, elbow fittings and 18" of vinyl tube.
    Part Number:
    1-HA5450
    Availability:
    In Stock - Ships same or next business day.
    Description:
    For Capilano Systems
    $134.29 $109.99
  • Sold Out, please call for ETA.
    SeaStar HK4500A-3 BayStar Plus Compact Hydraulic Steering System Complete Kit w/o Hoses

    SeaStar HK4500A-3 BayStar Plus Compact Hydraulic Steering System Complete Kit w/o Hoses

    Seastar

    $996.99
    Seastar Steering Kit-Baystar+ No-Hose Hk4500A-3 Application: BayStar is for single-outboard powered boats rated up to 150 HP, including runabouts and inflatables and outboard engines with ABYC standard engine tilt tubes up to 150 HP (total). For single...
    Part Number:
    1-HK4500A3
    Availability:
    In Stock - Ships same or next business day.
    Includes:
    HH45143 Plus Helm w/o Hoses
  • Seastar HPS R&P Backmount TFXtreme SSC135

    Seastar HPS R&P Backmount TFXtreme SSC135

    Seastar

    $732.09 $499.99
    Seastar HPS R&P Backmount TFXtreme SSC135 All Seastar Solutions steering cables exceed ABYC safety standards and ISO/IMCI/NMMA certification requirements. Features a tightly controlled core to conduit fit to offer precise steering. The outer jacket...
    Part Number:
    NW-1SSC135
    Availability:
    In Stock - Ships same or next business day.
    $732.09 $499.99
  • SeaStar Hydraulic Sport Tilt Helm 1.7 Teleflex Marine HH6191-3 HH6191-4

    SeaStar Hydraulic Sport Tilt Helm 1.7 Teleflex Marine HH6191-3 HH6191-4

    Seastar

    $1,316.59 $1,254.99
    SeaStar HH6191-4 marine hydraulic sport tilt helm 1.7.Features Greatly reduced "chatter" noise that is typically generated by overrunning steering loads Improved check valve durability with a more robust design Better trailering performance as well...
    Part Number:
    1-HH61914
    Availability:
    In Stock - Ships same or next business day.
    $1,316.59 $1,254.99
  • Seastar Orb Fitting-45Deg Elbow 2Pk Hf6011

    Seastar Orb Fitting-45Deg Elbow 2Pk Hf6011

    Seastar

    $50.19 $46.99
    Seastar Orb Fitting-45Deg Elbow 2Pk Hf6011 These fittings fit updated Seastar cylinders and all helm pump to use O-Ring (ORB) type fittings. Before the update all Seastar Solutions helms used NPT fittings. These 316 stainless steel fittings will...
    Part Number:
    1-HF6011
    Availability:
    In Stock - Ships same or next business day.
    Description:
    45 Degree Elbow
    Fits:
    Helms
    Bag:
    2
    $50.19 $46.99
  • Seastar Orb Fitting-Tee 2Pk Hf6005

    Seastar Orb Fitting-Tee 2Pk Hf6005

    Seastar

    $88.49 $75.12
    Seastar Orb Fitting-Tee 2Pk Hf6005Engineered 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 existing...
    Part Number:
    1-HF6005
    Availability:
    In Stock - Ships same or next business day.
    Description:
    ORB Tee Fitting Kit
    $88.49 $75.12
  • Seastar Orb Fitting-Vertical Tee 2Pk Hf6006

    Seastar Orb Fitting-Vertical Tee 2Pk Hf6006

    Seastar

    $94.79 $85.99
    Seastar Orb Fitting-Vertical Tee 2Pk Hf6006 These fittings fit updated Seastar cylinders and all helm pump to use O-Ring (ORB) type fittings. Before the update all Seastar Solutions helms used NPT fittings. These 316 stainless steel fittings will...
    Part Number:
    1-HF6006
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Vertical Tee
    Fits:
    Cylinders
    Bag:
    2
    $94.79 $85.99
  • Seastar Orb Kit-Add Helm/Autopilot O/B Hf6007

    Seastar Orb Kit-Add Helm/Autopilot O/B Hf6007

    Seastar

    $259.49 $212.63
    Seastar Orb Kit-Add Helm/Autopilot O/B Hf6007These fittings fit updated Seastar cylinders and all helm pump to use O-Ring (ORB) type fittings. Before the update all Seastar Solutions helms used NPT fittings. These 316 stainless steel fittings will...
    Part Number:
    1-HF6007
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Fitting Kit
    Fits:
    Helms
    $259.49 $212.63
  • Seastar Seal Kit Gland Tournament Cyl Hp6160

    Seastar Seal Kit Gland Tournament Cyl Hp6160

    Seastar

    $210.79 $149.99
    Seastar Seal Kit Gland Tournament Cyl Hp6160 Engineered 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...
    Part Number:
    1-HP6160
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Tournament 2 Gland Seal Kit
    $210.79 $149.99

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.