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Aftermarket Parts

Aftermarket Parts

  • Uflex Control Cable Merc Gen II C36

    Uflex Control Cable Merc Gen II C36

    Uflex

    $40.89 $33.78
    Uflex Control Cable Merc Gen II C36 Heavy duty 18 laywire conduit for long life & high efficiency. For Mercury® and Mercruiser® engines and Mercury® Generation II&trade, series controls. Stroke: 3.3" (85 mm).
    Part Number:
    NW-216C36
    Availability:
    In Stock - Ships same or next business day.
    $40.89 $33.78
  • Uflex Uflex Hydraulic Oil- 1 Quart Oil 15

    Uflex Uflex Hydraulic Oil- 1 Quart Oil 15

    Uflex

    $35.56
    Uflex Uflex Hydraulic Oil- 1 Quart Oil 15Specially formulated for peak steering efficiency and component longevity, aircraft grade Oil 15 from Uflex is recommended for use with all Uflex steering helms and cylinders.
    Part Number:
    216-OIL15
    Availability:
    In Stock - Ships same or next business day.
    Description:
    ISO VG15
    Size:
    Quart
    $35.56
  • Attwood Marine SS Fuel Tank Vent Strgt Card 66031-3

    Attwood Marine SS Fuel Tank Vent Strgt Card 66031-3

    Attwood Marine

    $56.65 $29.99
    Attwood Marine SS Fuel Tank Vent Strgt Card 66031-3 316 Stainless Steel. On the exterior, they have a smooth edge over the competition. There is no protruding cap to cause damage- or be damaged by- hull bumps or scrapes. Cap unscrews with hex head...
    Part Number:
    23-660313
    Availability:
    In Stock - Ships same or next business day.
    Type:
    Straight
    Hose:
    5/8" I.D.
    Max Hull Thickness:
    7/8"
    Hole:
    1-3/8"
    $56.65 $29.99
  • Sierra Filter-O/B Fuel MerCruiser #35-18458Q 4 18-7968

    Sierra Filter-O/B Fuel MerCruiser #35-18458Q 4 18-7968

    Sierra

    $25.69 $20.99
    Sierra Filter-O/B Fuel MerCruiser #35-18458Q 4 18-796890 gph flow rate10 micronRefer to the Sierra catalog for complete application information.
    Part Number:
    47-7968
    Availability:
    In Stock - Ships same or next business day.
    Replaces:
    Mercury: 35-18458Q4 - 35-18458A4 - 35-184585 Mallory: 9-37806
    Application:
    Direct replacement for Mercury Marine - Mariner V6 EFI engines 1996-Up with sensor (blue)
    $25.69 $20.99
  • Sierra Thermostat Housing S.S. 18-1989

    Sierra Thermostat Housing S.S. 18-1989

    Sierra

    $350.89 $254.99
    Sierra Thermostat Housing S.S. 18-1989
    Part Number:
    47-1989
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Stainless Steel Termostat Housing
    Replaces:
    861006A - 87290A4 & fits select Marine Power engines
    $350.89 $254.99
  • STA-BIL 360 Marine Boat Formula Ethanol Treatment (32 oz) 22240

    STA-BIL 360 Marine Boat Formula Ethanol Treatment (32 oz) 22240

    STA-BIL

    $32.99 $26.99
    STA-BIL Marine Formula 32oz 22240 Ethanol Treatment & Performance Improver Extra corrosion protection & fuel system cleaning Recommended to be used at every fill up, not just for seasonal storage Double the corrosion preventers than in...
    Part Number:
    269-22240
    Availability:
    In Stock - Ships same or next business day.
    Size:
    Quart
    Treats:
    320 gal.
    $32.99 $26.99
  • Special Order! See availaility for details
    Martyr Anodes 8 5/8 x 4 1/4 x 1 Hull Anode ( Cmmzc406

    Martyr Anodes 8 5/8 x 4 1/4 x 1 Hull Anode ( Cmmzc406

    Martyr Anodes

    $111.09 $57.58
    Martyr Anodes 8 5/8 x 4 1/4 x 1 Hull Anode ( Cmmzc406 Zinc: For use in salt waterAluminum: For use in brackish waterMagnesium: For use in fresh water
    Part Number:
    194-CMMZC406
    Availability:
    In Stock - Ships same or next business day.
    Size:
    8-5/8" L x 4-1/4" W x 1" H
    Hole:
    5"
    Material:
    Zinc
    $111.09 $57.58
  • Racor Replacement Element F/Afm408512 Afm8040

    Racor Replacement Element F/Afm408512 Afm8040

    Racor

    $164.29 $116.41
    Racor Replacement Element F/Afm408512 Afm8040Removes contaminants introduced into the air from both outside and inside the vessel. Sand, salt, carpet fibers and other contaminants are trapped in the oil-impregnated Vaporloc filter media. Turbo noise is...
    Part Number:
    62-AFM8040
    Availability:
    In Stock - Ships same or next business day.
    $164.29 $116.41
  • Seachoice Twin Lever Control Chrome-Plated Brass Red and Black Knobs 28401

    Seachoice Twin Lever Control Chrome-Plated Brass Red and Black Knobs 28401

    Seachoice

    $297.54 $249.99
    Seachoice Twin Lever Control 28401 Made of chrome plated brassEach separate lever controls clutch and throttle for one engineNot for dual station applicationsFunctions easily identified by red and black knobsDesigned to use 33C type control cablesShims...
    Part Number:
    50-28401
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Twin Lever Control
    Fastener:
    # 10 screws
    $297.54 $249.99
  • Seastar Single Mt3 Topmt Dual Func Lev Ch5310P

    Seastar Single Mt3 Topmt Dual Func Lev Ch5310P

    Seastar

    $534.19 $359.99
    Seastar Single Mt3 Topmt Dual Func Lev Ch5310P Combines classic binnacle styling with dual function levers, a neutral safety switch, and an engine warm-up feature. Now features longer shift travel for certain MerCruisers or longer runs with many bends...
    Part Number:
    1-CH5310P
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Single Control - Dual Function
    $534.19 $359.99
  • Uflex Rotech Steering System

    Uflex Rotech Steering System

    Uflex

    $277.99 $199.99
    Uflex Rotech Steering System Featuring the Planetary Gear designed helm, the Rotech delivers the ultimate in durability, reduced torque loads, and more balanced steering effort. A direct "drop in" replacement for competing systems. Kit...
    Part Number:
    NW-216ROTECH
    Availability:
    In Stock - Ships same or next business day.
    $277.99 $199.99
  • Sold Out, please call for ETA.
    NGK Spark Plugs 6546 Spark Plug Iridium 6546

    NGK Spark Plugs 6546 Spark Plug Iridium 6546

    NGK Spark Plugs

    $17.29 $9.39
    NGK Spark Plugs 6546 Spark Plug Iridium 6546   Designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling. Fine-tipped iridium-center electrode ensures high...
    Part Number:
    41-DCPR8EIX
    Availability:
    In Stock - Ships same or next business day.
    Model #:
    6546
    What's in the Box:
    (1) Spark Plug
  • Seachoice Alpha One Gen 2 Kit Aluminum 50-95021

    Seachoice Alpha One Gen 2 Kit Aluminum 50-95021

    Seachoice

    $69.99 $54.84
    Seachoice Alpha One Gen 2 Kit Aluminum 50-95021 Cadmium free, environmentally friendly. • Aluminum: For salt and brackish waterConform to: Mil-Spec A-24779(SH)  • Magnesium: For freshwater onlyConform to: Mil-Spec...
    Part Number:
    50-95021
    Availability:
    In Stock - Ships same or next business day.
    Material:
    Aluminum
    $69.99 $54.84
  • Seachoice Marine Boat Adj Fuel Tank Sender 6-12" 15461

    Seachoice Marine Boat Adj Fuel Tank Sender 6-12" 15461

    Seachoice

    $42.51 $41.99
    Seachoice Adj Fuel Tank Sender 6-12" 15461 Can be used for gas or dieselMade of non-ferrous materials and compatible with 35 (full) to 240 (empty) ohm gaugesMounting screws and gasket includedFloat arm can be rotated in 90&deg, intervals to assure...
    Part Number:
    50-15461
    Availability:
    In Stock - Ships same or next business day.
    Tank Depth:
    6" to 12"
    $42.51 $41.99

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.