Aftermarket Parts
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Seastar Hose Kit-2Pc Seastar O/B 14 Ft Ho5114
Seastar
$188.99 $164.99Seastar Hose Kit-2Pc Seastar O/B 14 Ft Ho5114 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-HO5114
- Availability:
- In Stock - Ships same or next business day.
- Length:
- 14'
- Box:
- 2
$188.99 $164.99 -
Seastar Sl3 Control Neutral Safety 51801033
Seastar
$13.29 $11.99Seastar Sl3 Control Neutral Safety 51801033- Part Number:
- 1-051801033
- Availability:
- In Stock - Ships same or next business day.
- Description:
- SL3 Neutral Safety Switch
$13.29 $11.99 -
Seloc Publishing Manual MerCruiser 01-13 Gas Drives I/B 3208
Seloc Publishing
$61.49 $55.99Seloc Publishing Manual MerCruiser 01-13 Gas Drives I/B 3208 The only marine tune-up manuals to be certified by the engine manufacturers as accurate and complete. Seloc uses easy to understand, step-by-step, illustrated procedures for the complete...- Part Number:
- 230-3208
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Mercruiser Sterndrives & Inboards
- Description:
- All Gas Engines & Drives - incl. Inboards
- Year:
- 2001-2013
$61.49 $55.99 -
Sierra C-Thermostat Kit-MerCruiser #807252Q 4 18-3668
Sierra
$48.29 $30.78Sierra C-Thermostat Kit-MerCruiser #807252Q 4 18-3668- Part Number:
- 47-3668
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 807252T4 - 807252Q4
$48.29 $30.78 -
Sierra Carb Kit MerCruiser #1395-811223 1 18-7211-1
Sierra
$13.49 $12.99Sierra Carb Kit MerCruiser #1395-811223 1 18-7211-1- Part Number:
- 47-72111
- Availability:
- In Stock - Ships same or next business day.
$13.49 $12.99 -
Sierra Coil Lead M-F 90Deg-90Deg 12 18-28100
Sierra
$21.69 $18.99Sierra Coil Lead M-F 90Deg-90Deg 12 18-28100- Part Number:
- 47-28100
- Availability:
- In Stock - Ships same or next business day.
- Description:
- 12" w/90 Deg - male Dist & 90Ëœfemale coil
$21.69 $18.99 -
Sold Out, please call for ETA.
Sierra Gasket Thermostat Chev 18-2917
Sierra
$4.69 $4.36Sierra Gasket Thermostat Chev 18-2917- Part Number:
- 47-2917
- Availability:
- In Stock - Ships same or next business day.
$4.69 $4.36 -
Sierra Wave Washer Kit-Yamaha 18-9079
Sierra
$28.29 $21.99Sierra Wave Washer Kit-Yamaha 18-9079- Part Number:
- 47-9079
- Availability:
- In Stock - Ships same or next business day.
$28.29 $21.99 -
Uflex T-Fitting Boss Style Nickel 71955T
Uflex
$29.59 $25.99Uflex T-Fitting Boss Style Nickel 71955T The 71955T is a hydraulic fitting used in helms and cylinders.- Part Number:
- 216-71955T
- Availability:
- In Stock - Ships same or next business day.
$29.59 $25.99 -
Attwood Marine Gear Lube Pump 11891D7
Attwood Marine
$10.59 $8.99Attwood Marine Gear Lube Pump 11891D7 The pump fits any outboard or sterndrive and includes one Yamaha® adapter.- Part Number:
- 23-11891D7
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- 22 oz. Gear Lube bottles
$10.59 $8.99 -
Martyr Anodes 1 1/4 Zinc Shaft Anode Cmx05
Martyr Anodes
$13.99 $11.99Martyr Anodes 1 1/4 Zinc Shaft Anode Cmx05 Aluminum for salt and brackish waterMagnesium for fresh waterZinc for salt water- Part Number:
- 194-CMX05
- Availability:
- In Stock - Ships same or next business day.
- ID:
- 1-1/4"
- OD:
- 2-1/2"
- Length:
- 2-1/2"
- Material:
- Zinc
$13.99 $11.99 -
Martyr Anodes 1 Magnesium Shaft Anode Cmx03M
Martyr Anodes
$27.19 $19.99Martyr Anodes 1 Magnesium Shaft Anode Cmx03M Aluminum for salt and brackish waterMagnesium for fresh waterZinc for salt water- Part Number:
- 194-CMX03M
- Availability:
- In Stock - Ships same or next business day.
- ID:
- 1"
- OD:
- 2-1/8"
- Length:
- 2-1/8"
- Material:
- Magnesium
$27.19 $19.99 -
Martyr Anodes Anode Aluminum Button Cm55989A
Martyr Anodes
$7.59 $4.58Martyr Anodes Anode Aluminum Button Cm55989AAluminum for salt and brackish waterMagnesium for fresh waterZinc for salt water- Part Number:
- 194-CM55989A
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Alpha Gimbal HSG
- Material:
- Aluminum
$7.59 $4.58 -
NGK Spark Plugs 6499 Spark Plug LFR4AE Mercury 8m0157328
NGK Spark Plugs
$18.04 $9.99NGK Spark Plugs 6499 Spark Plug LFR4AE Mercury 8m0157328 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:
- 41-6499
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6499
- What's in the Box:
- (1) Spark Plug
$18.04 $9.99 -
Seachoice Anode Kit Mercruiser Bravo2 II (1989-Present) 3 III (1989-2003) Magnesium Fresh Water only 95071
Seachoice
$108.60 $71.16Seachoice Bravo II/III Kit - Mg Freshwat 50-95071 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:
- 50-95071
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- Bravo II 1989-Pres. Bravo III 1989-2003
- Material:
- Magnesium
$108.60 $71.16 -
Sierra Cobra O/D Mounting Gasket Set 18-2613
Sierra
$11.89 $8.99Sierra Cobra O/D Mounting Gasket Set 18-2613- Part Number:
- 47-2613
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 508105
$11.89 $8.99 -
Sierra Eclipse Tachometer 0-7000 Rpm 68399P
Sierra
$141.89 $92.99Sierra Eclipse Tachometer 0-7000 Rpm 68399PSmart white and blue graphics on a black dial background; these very low profile bezels follow the curve of the lense to eliminate water trapping. Design with domed glass sheds water and resists scratching...- Part Number:
- 11-68399P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 3"
- Type:
- Tachometer - Petrol/Gas
- Dial Range:
- 0-7000 rpm
- Sender Code:
- O/B Alt or Coil
$141.89 $92.99 -
Sierra Filter-H2O Separator Vp-Om Sx-Efi 21M 18-7789
Sierra
$12.99 $11.99Sierra Filter-H2O Separator Vp-Om Sx-Efi 21M 18-7789Clear Bowls: Use for outboard and above deck installations.USCG regulations require the use of flame resistant Metal bowls below deck.- Part Number:
- 47-7789
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Element
- Replaces:
- Volvo SX/EFI - Replaces: 3851218-2 - 3852413 - 3862228. Cobra EFI - Replaces: OMC 502906
$12.99 $11.99 -
Sierra Filter-Oil Seadoo Brp420956741 18-8880
Sierra
$15.49 $12.55Sierra Filter-Oil Seadoo Brp420956741 18-8880- Part Number:
- 47-8880
- Availability:
- In Stock - Ships same or next business day.
- Application:
- SeaDoo & 4 Stroke
- Replaces:
- BRP: 420956741 - Yamaha: 6M6-8183E00-00
$15.49 $12.55 -
Sierra Fuel Connector-Suzuki #65750-87J10 18-80418
Sierra
$19.69 $15.99Sierra Fuel Connector-Suzuki #65750-87J10 18-80418- Part Number:
- 47-80418
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose - Female
- Fits:
- Suzuki
- Application:
- Fits - DT4-DT140 - Mates with 18-8087 & 18-80409
- Replaces:
- 65750-94404
- Thread:
- -
- Hose:
- -
$19.69 $15.99
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.