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Aftermarket Parts

Aftermarket Parts

  • OEM Mercury Mercruiser High-Performance SAE90 Gear Lube 92-858064K01 92-858065K01 92-8M0222063 92-8M0222071
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    OEM Mercury Mercruiser High-Performance SAE90 Gear Lube 92-858064K01 92-858065K01 92-8M0222063 92-8M0222071

    Mercury Marine / Quicksilver

    $18.99 $14.99
    Genuine OEM Mercury High-Performance SAE 90 gear lube. The lubricant Mercury engineers for sterndrive and outboard lower units. Clean, consistent protection is what keeps gears and bearings alive season after season.Extensively tested for protection...
    Part Number:
    NW-MGSAE90HP
    Availability:
    In Stock - Ships same or next business day.
    Grade:
    SAE90
    $18.99 $14.99
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  • Seachoice Tiller Rope Clamp-Cpz 2/Pk 28601
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    Seachoice Tiller Rope Clamp-Cpz 2/Pk 28601

    Seachoice

    $11.50 $10.99
    Seachoice tiller rope clamp, #28601, sold as a 2-pack. A simple, corrosion-resistant way to anchor steering or tiller rope.Fits 1/8" or 3/16" ropeChrome-plated zinc for marine durabilityCompact 1-1/4" × 11/16" body, two clamps...
    Part Number:
    50-28601
    Availability:
    In Stock - Ships same or next business day.
    Pack:
    1 pr.
    $11.50 $10.99
    Add to Cart
  • NGK Spark Plugs 5599 Spark Plug 5599 ITR4A15 (Mercury 8M0204739 8m2018369)
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    NGK Spark Plugs 5599 Spark Plug 5599 ITR4A15 (Mercury 8M0204739 8m2018369)

    NGK Spark Plugs

    $20.89 $11.99
    NGK iridium spark plug, stock #5599 (ITR4A15). Original equipment on many late-model applications, and the direct replacement for Mercury 8M0204739 / 8M2018369.Iridium fine-wire center electrode + platinum ground electrode for maximum durability and...
    Part Number:
    41-ITR4A15
    Availability:
    In Stock - Ships same or next business day.
    Model #:
    5599
    What's in the Box:
    (1) Spark Plug
    $20.89 $11.99
    Add to Cart
  • OEM Factory Quicksilver MerCruiser Trim Pump & Starter Solenoid / Relay 89-96158T 8M0185622
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    OEM Factory Quicksilver MerCruiser Trim Pump & Starter Solenoid / Relay 89-96158T 8M0185622

    Mercury Marine / Quicksilver

    $41.95 $35.49
    Genuine OEM Quicksilver MerCruiser solenoid / relay, #89-96158T (8M0185622). Does double duty across the MerCruiser line.Used as the starter solenoid on most MerCruiser enginesMerCruiser trim pumps with plastic reservoirs use two of theseSold each, order...
    Part Number:
    710-8M0185622
    Availability:
    In Stock - Ships same or next business day.
    $41.95 $35.49
    Add to Cart
  • Seastar Cable Hook Clip 36174
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    Seastar Cable Hook Clip 36174

    Seastar

    $25.39 $15.99
    Genuine SeaStar Solutions cable hook clip, #36174. The factory clip for securing SeaStar steering and control cable hardware.Replacing a worn or missing clip? Match part #36174, or call 856-232-6969 and we’ll confirm it’s right for your setup.
    Part Number:
    1-036174
    Availability:
    In Stock - Ships same or next business day.
    Cable:
    3300
    Description:
    Single Cable
    $25.39 $15.99
    Add to Cart
  • OEM MerCruiser Quicksilver High-Performance SAE90 Gear Lube 92-858064Q01 92-858065Q01
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    OEM MerCruiser Quicksilver High-Performance SAE90 Gear Lube 92-858064Q01 92-858065Q01

    Mercury Marine / Quicksilver

    $19.97 $3.90
    OEM Quicksilver High-Performance SAE90 Gear Lube Clean oil is essential in reducing friction and preventing damage to internal components, providing many years of engine life. Engineered for sterndrive and outboard lower units, this High Performance SAE...
    Part Number:
    NW-QGSAE90HP
    Availability:
    In Stock - Ships same or next business day.
    Grade:
    SAE90
    $19.97 $3.90
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  • OEM MerCruiser Trim Pump Oil Reservoir Cap 36-865448A01 36-8M0188327
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    OEM MerCruiser Trim Pump Oil Reservoir Cap 36-865448A01 36-8M0188327

    Mercury Marine / Quicksilver

    $8.29 $7.99
    NEW OEM FACTORY MerCruiser Quicksilver Trim Pump Oil Reservoir Bottle CAP Old part number 36-865448A01 ss to new part number 36-8M0188327 (this is the cap only, Trim pump Reservoir NOT included) Please confirm fitment of MerCruiser parts with your...
    Part Number:
    710-36-8M0188327
    Availability:
    In Stock - Ships same or next business day.
    $8.29 $7.99
    Add to Cart
  • NGK Spark Plugs 3623 Spark Plug BPR6EFS
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    NGK Spark Plugs 3623 Spark Plug BPR6EFS

    NGK Spark Plugs

    $10.01 $6.99
    NGK Spark Plugs 3623 Spark Plug 3623 BPR6EFS  Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life. •?Triple...
    Part Number:
    41-3623
    Availability:
    In Stock - Ships same or next business day.
    Model #:
    3623
    Pack:
    1
    Pkg.:
    Boxed
    What's in the Box:
    (1) Spark Plug
    $10.01 $6.99
    Add to Cart
  • Sierra MerCruiser Alpha 1 Gen 1 Water Pump Kit 46-96148Q8 18-3320
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    Sierra MerCruiser Alpha 1 Gen 1 Water Pump Kit 46-96148Q8 18-3320

    Sierra

    $91.79 $62.99
    MerCruiser Alpha Gen 1 Water Pump Impeller Housing KitThis is the complete kit with everything you need to service your Alpha Gen 1 Out-drive.This kit includes:impeller, gaskets, wear plate, and water pump tube.Impeller replacement kit includes housing...
    Part Number:
    47-3320
    Availability:
    In Stock - Ships same or next business day.
    $91.79 $62.99
    Add to Cart
  • Seachoice 90 Deg Fuel Elbow 20851
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    Seachoice 90 Deg Fuel Elbow 20851

    Seachoice

    $12.61 $9.99
    Seachoice 90 Deg Fuel Elbow 20851 All brass machined fittingsIdeal for fuel fitting applicationsExcellent for use with fuel/water separator where space is limited.
    Part Number:
    50-20851
    Availability:
    In Stock - Ships same or next business day.
    Thread:
    1/4" NPT
    Hose:
    3/8"
    $12.61 $9.99
    Add to Cart
  • OEM Quicksilver Mercury Mercruiser 85W90 Extreme Gear Lube Quart / Gallon 8M0111677 8M0111679
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    OEM Quicksilver Mercury Mercruiser 85W90 Extreme Gear Lube Quart / Gallon 8M0111677 8M0111679

    Mercury Marine / Quicksilver

    $23.99 $22.99
    OEM Quicksilver 85W90 Extreme Gear Lube Extreme Performance Gear Lube 8M011677 is 85W90 weight for use in outboard and sterndrive racing applications. Also for use in high‑performance gear cases used in marine, powersports, and motorsports applications...
    Part Number:
    NW-QG85W90E
    Availability:
    In Stock - Ships same or next business day.
    Grade:
    85W-90
    $23.99 $22.99
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  • Seastar Control Cable TFXtreme Merc CCX179
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    Seastar Control Cable TFXtreme Merc CCX179

    Seastar

    $60.89 $59.99
    Seastar Control Cable TFXtreme Merc CCX179 Stainless steel and brass fittings. Fits Mariner/Mercury/Mercruiser 1965-date, Force 1993-date w/Mercury controls, all Mariner engines with Mercury/Mariner controls (except pre-1993 40hp & lower), all...
    Part Number:
    NW-1CCX179
    Availability:
    In Stock - Ships same or next business day.
    $60.89 $59.99
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  • Permatex .25 Pt Aviation Form-A-Gasket 80019
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    Permatex .25 Pt Aviation Form-A-Gasket 80019

    Permatex

    $17.89 $15.99
    Permatex .25 Pt Aviation Form-A-Gasket 80019 Aviation Form-A-Gasket no. 3 sealant liquid. Holds gaskets in place while making assembly. Brush on formula that dries slowly to a pliable film for easy disassembly. Resists common shop fluids and fuels.
    Part Number:
    180-80019
    Availability:
    In Stock - Ships same or next business day.
    Size:
    4 oz.
    $17.89 $15.99
    Add to Cart
  • OEM Quicksilver Premium 80W90 Gear Lube
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    OEM Quicksilver Premium 80W90 Gear Lube

    Mercury Marine / Quicksilver

    $11.49 $8.99
    OEM Quicksilver Premium 80W90 Gear Lube Clean oil is essential in reducing friction and preventing damage to internal components, providing many years of engine life. Engineered for outboard applications below 75 HP, this premium 80W-90 gear lube has...
    Part Number:
    NW-QG80W90P
    Availability:
    In Stock - Ships same or next business day.
    Grade:
    80W-90
    $11.49 $8.99
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  • Martyr Anodes Rud Anode Cmr3 3-3/4 Cmr03Al
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    Martyr Anodes Rud Anode Cmr3 3-3/4 Cmr03Al

    Martyr Anodes

    $17.69 $13.99
    Martyr Anodes Rud Anode Cmr3 3-3/4 Cmr03Al Zinc: For use in salt waterAluminum: For use in brackish waterMagnesium: For use in fresh water
    Part Number:
    194-CMR03AL
    Availability:
    In Stock - Ships same or next business day.
    Size:
    3-3/4" dia. x 1/2"
    Material:
    Aluminum
    $17.69 $13.99
    Add to Cart
  • AC Delco Spark Plugs Spark Plug AC#41-983 Double Plated 8M0129146 41983
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    AC Delco Spark Plugs Spark Plug AC#41-983 Double Plated 8M0129146 41983

    AC Delco Spark Plugs

    $21.99 $13.99
    AC Delco Spark Plugs Spark Plug AC#41-983 Double Plated 41983 Dual platinum tip provides improved resistance to spark erosion while the platinum center electrode and pad lower the ignition demand voltage. A corrosion resistant shell makes it an...
    Part Number:
    603-41983
    Availability:
    In Stock - Ships same or next business day.
    OEM #:
    Mercury 33-863622001
    What's in the Box:
    (1) Spark Plug
    $21.99 $13.99
    Add to Cart
  • NGK Spark Plugs 3521 Spark Plug Cr9Eix 3521
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    NGK Spark Plugs 3521 Spark Plug Cr9Eix 3521

    NGK Spark Plugs

    $20.39 $10.99
    NGK Spark Plugs 3521 Spark Plug Cr9Eix 3521   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-CR9EIX
    Availability:
    In Stock - Ships same or next business day.
    Model #:
    3521
    What's in the Box:
    (1) Spark Plug
    $20.39 $10.99
    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.