Aftermarket Parts
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Seachoice Bravo One Kit-Mg Freshwater 50-95051
Seachoice
$101.47 $66.72Seachoice Bravo One Kit-Mg Freshwater 50-95051 Cadmium free, environmentally friendly. • Aluminum: For salt and brackish waterConform to: Mil-Spec A-24779(SH) • Magnesium: For freshwater onlyConform to: Mil-Spec A-21412(SH)...- Part Number:
- 50-95051
- Availability:
- In Stock - Ships same or next business day.
- Material:
- Magnesium
$101.47 $66.72 -
Seachoice Fuel Elbow 90 Deg 3/8 x 3/8Np 20861
Seachoice
$14.09 $12.99Seachoice Fuel Elbow 90 Deg 3/8 x 3/8Np 20861 All brass machined fittingsIdeal for fuel fitting applicationsExcellent for use with fuel/water separator where space is limited.- Part Number:
- 50-20861
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 3/8" NPT
- Hose:
- 3/8"
$14.09 $12.99 -
Seachoice Yamaha 200-250 Hp Kit - Al 50-95231
Seachoice
$52.51 $36.57Seachoice Yamaha 200-250 Hp Kit - Al 50-95231 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:
- 50-95231
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- 200-250 HP
- Material:
- Aluminum
$52.51 $36.57 -
Seastar Baystar Tubing Kit 30' Ht4430H
Seastar
$344.19 $195.58Seastar Baystar Tubing Kit 30' Ht4430HCan be used with all BayStar helms with appropriate fittings. Kit contains two cut lengths of tubing.(NOTE: BayStar Cylinders with H suffix must use tubing part number with H suffix.)- Part Number:
- 1-HT4430H
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Baystar Tubing
- Length:
- 30' (2 x 30')
$344.19 $195.58 -
Seastar Cable Gard/Tilt Tube Seal Nut Sa39329P
Seastar
$23.79 $19.99Seastar Cable Gard/Tilt Tube Seal Nut Sa39329P A unique wiper seal that slips over the cable output ram and snaps onto the tilt tube nut. Dirt and corrosion are wiped out while essential lubrication is sealed in the engine tilt tube. Adds years of...- Part Number:
- 1-SA39329P
- Availability:
- In Stock - Ships same or next business day.
$23.79 $19.99 -
Seastar Control Cable 4300CC TFXtreme CCX433
Seastar
$106.39 $90.71Seastar Control Cable 4300CC TFXtreme CCX433 4300CC/43CC universal type cables for heavy duty applications with clamp ends at the control and the drive. Splined core allows easy movement and minimum lost motion. Both ends have a 1/4-28 threaded fitting...- Part Number:
- NW-1CCX433
- Availability:
- In Stock - Ships same or next business day.
$106.39 $90.71 -
Seastar Grounding Strap-O/B Hyd Cyl Ha5477
Seastar
$40.09 $35.99Seastar Grounding Strap-O/B Hyd Cyl Ha5477 The grounding strap kit is designed to provide added protection against corrosion caused by stray current. This is designed for use on the SeaStar and BayStar front mount outboard cylinders. Included with all...- Part Number:
- 1-HA5477
- Availability:
- In Stock - Ships same or next business day.
$40.09 $35.99 -
Sold Out, please call for ETA.
Seastar Helm-Seastar 2 2.4 Hh5272-3
Seastar
$959.89 $849.34Seastar Helm-Seastar 2 2.4 Hh5272-3Efficient, safe and reliable. Easy to install. Feature helm rotor supported by 3 roller bearings, ball bearing piston race, simplified integrated metal construction, field replaceable shaft seal, 1/4'' NPT port threads,...- Part Number:
- 1-HH52723
- Availability:
- In Stock - Ships same or next business day.
- Type:
- SeaStar 2.4
- Mount:
- Front
$959.89 $849.34 -
Seastar Hose Kit-2Pc Seastar O/B 26 Ft Ho5126
Seastar
$339.09 $289.99Seastar Hose Kit-2Pc Seastar O/B 26 Ft Ho5126 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-HO5126
- Availability:
- In Stock - Ships same or next business day.
- Length:
- 26'
- Box:
- 2
$339.09 $289.99 -
Seastar Pro Series Tilt Mechanism Sh91800P
Seastar
$222.39 $169.99Seastar Pro Series Tilt Mechanism Sh91800P Tilt mechanism with flexible bellows and 3/4" tapered shaft. Requires tilt helm assembly.- Part Number:
- 1-SH91800P
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Tilt Mechanism
$222.39 $169.99 -
Seastar Seal Kit Hp5608
Seastar
$212.39 $169.99Seastar Seal Kit Hp5608- Part Number:
- 1-HP5608
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Gland/seal kit
- Fits:
- HC4645H/47H/48H/58H starboard side
$212.39 $169.99 -
Seastar Tee Fitting End 3/8 Tube(3/Bg) Hf5530
Seastar
$71.19 $47.99Seastar Tee Fitting End 3/8 Tube(3/Bg) Hf5530 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-HF5530
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Tee Fitting
- Material:
- Brass
- Bag:
- 3
$71.19 $47.99 -
Sherwood Water Pump Impeller Kit with Gaskets 10615k
Sherwood Pump
$55.09 $41.99Sherwood Pump P Impeller Kit with Gaskets 10615K Neoprene maximum temperature 130°F.Part numbers ending in "K" designate impeller kits which include impeller, gasket and O-ring.- Part Number:
- 762-10615K
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Impeller
- Blades:
- 12
- Dia.:
- 2-9/16"
- Width:
- 1-5/8"
- Shaft:
- 5/8"
- Keyway:
- 3/16"
$55.09 $41.99 -
Sierra 582160/584632 Coil 50Hp-V4'S 18-5194
Sierra
$48.19 $36.71Sierra 582160/584632 Coil 50Hp-V4'S 18-5194- Part Number:
- 47-5194
- Availability:
- In Stock - Ships same or next business day.
$48.19 $36.71 -
Sierra 862077A 1 MerCruiser Fuel Pump 18-7284
Sierra
$235.89 $176.08Sierra 862077A 1 MerCruiser Fuel Pump 18-7284- Part Number:
- 47-7284
- Availability:
- In Stock - Ships same or next business day.
$235.89 $176.08 -
Sierra 909829 OMC Plug Off Cap 18-0549
Sierra
$16.09 $13.99Sierra 909829 OMC Plug Off Cap 18-0549- Part Number:
- 47-0549
- Availability:
- In Stock - Ships same or next business day.
$16.09 $13.99 -
Sierra 985612 OMC Seal Kit 18-2671
Sierra
$52.39 $43.99Sierra 985612 OMC Seal Kit 18-2671- Part Number:
- 47-2671
- Availability:
- In Stock - Ships same or next business day.
$52.39 $43.99 -
Sierra Alternator 18-6293
Sierra
$305.79 $222.32Sierra Alternator 18-6293- Part Number:
- 47-6293
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- Mercruiser
- OEM #:
- 862031T
- Type:
- New
$305.79 $222.32 -
Sierra Alternator-65Amp 2-Wire Serp 18-5960
Sierra
$306.29 $256.10Sierra Alternator-65Amp 2-Wire Serp 18-5960- Part Number:
- 47-5960
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- Mercruiser
- OEM #:
- 807653T
- Type:
- New
$306.29 $256.10 -
Sierra Alternator-70A Hinge Mnt Serp 18-6298
Sierra
$343.39 $248.17Sierra Alternator-70A Hinge Mnt Serp 18-6298- Part Number:
- 47-6298
- Availability:
- In Stock - Ships same or next business day.
$343.39 $248.17
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.