Aftermarket Parts
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Seastar Classic Tilt Replacement Kit Ha6523
Seastar
$465.39 $379.99Seastar Classic Tilt Replacement Kit Ha6523 Kit is designed to replace the tilting mechanism of a SeaStar Traditional and SeaStar Classic Tilt helms.- Part Number:
- 1-HA6523
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Classic Tilt replacement kit
$465.39 $379.99 -
Seastar Cylinder Outboard Front Mount Hc5345-3
Seastar
$962.29 $890.00Seastar Cylinder Outboard Front Mount Hc5345-3 Updated cylinders fit the same applications as the prior models. Improvements over previous models include: Updated styling, a more robust barrel, new sealing systems and materials with excellent resistance...- Part Number:
- 1-HC53453
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Front Mt.
- Mount:
- Pivot
$962.29 $890.00 -
Sold Out, please call for ETA.
Seastar Cylinder Seal Kit For K6 Ks19
Seastar
$63.79 $40.90Seastar Cylinder Seal Kit For K6 Ks19- Part Number:
- 10-KS19
- Availability:
- In Stock - Ships same or next business day.
- Description:
- For K6
$63.79 $40.90 -
Seastar Mounting Hardware For O/B Pivot Pla Hp6033
Seastar
$97.19 $62.99Seastar Mounting Hardware For O/B Pivot Pla Hp6033- Part Number:
- 1-HP6033
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Mounting hardware for O/B pivot plate cylinder
$97.19 $62.99 -
Seastar Non-Vent Plug Ha5432
Seastar
$25.49 $17.99Seastar Non-Vent Plug Ha5432- Part Number:
- 1-HA5432
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Non-Vented Fill Plug
$25.49 $17.99 -
Seastar Seal Kit F/Hc5318 I/B Cylinder Hs5182
Seastar
$101.99 $71.86Seastar Seal Kit F/Hc5318 I/B Cylinder Hs5182- Part Number:
- 1-HS5182
- Availability:
- In Stock - Ships same or next business day.
$101.99 $71.86 -
Seloc Publishing Manual Mercury 65-89 45-115hp 3-4Cyl 1406
Seloc Publishing
$62.09 $55.99Seloc Publishing Manual Mercury 65-89 45-115hp 3-4Cyl 1406The 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:
- 230-1406
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Mercury O/B
- Description:
- 3-4 Cyl
- HP:
- 45-115
- Year:
- 1965-1989
$62.09 $55.99 -
Seloc Publishing Manual OMC Cobra 86-98 Gas & Stern 3404
Seloc Publishing
$61.49 $55.99Seloc Publishing Manual OMC Cobra 86-98 Gas&Stern 3404 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:
- 230-3404
- Availability:
- In Stock - Ships same or next business day.
- Type:
- OMC Sterndrives
- Description:
- All Gas Engines & Cobra/King Cobra Sterndrives
- Year:
- 1986-1998
$61.49 $55.99 -
Sherwood Pump Impeller Kit W-O-Ring 29000K-Shw
Sherwood Pump
$339.49 $226.99Sherwood Pump Impeller Kit W-O-Ring 29000K-ShwNeoprene maximum temperature 130°F.Part numbers ending in "K" designate impeller kits which include impeller, gasket and O-ring.- Part Number:
- 762-29000K
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Impeller
- Blades:
- 12
- Dia.:
- 3-3/4"
- Width:
- 4"
- Shaft:
- 15/16"
- Keyway:
- 10 Tooth Spline
$339.49 $226.99 -
Sierra 580148 J/E Contact Set 18-5156
Sierra
$18.89 $13.38Sierra 580148 J/E Contact Set 18-5156- Part Number:
- 47-5156
- Availability:
- In Stock - Ships same or next business day.
$18.89 $13.38 -
Sierra Anode-Onan# 130-4434 23-6401
Sierra
$17.99 $17.89Sierra Anode-Onan# 130-4434 23-6401- Part Number:
- 47-236401
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- MDKAV - MDKBG - MDKAW (Spacesaver) - MDKAZ - MDKBD - MDKBE - MDKBF - MDKBD (w/ Isolated Ground) - MDKBE (w/ Isolated Ground) - MDKBF (w/ Isolated Ground) - MDKBH - MDKBK - MDKBL - MDKBM - MDKBN - MDKBP - MDKBR - MDKBS - MDKBV - MDKBT - MDKBU
- Replaces:
- Onan #130-4434
$17.99 $17.89 -
Sierra Complete Ignition Conversion K 18-5480
Sierra
$881.09 $612.27Sierra Complete Ignition Conversion K 18-5480Contains:Coil 5472 (1)Wire Set 88032 (1)Distributor 5483 (1)- Part Number:
- 47-5480
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Chris-Craft - Crusader - Indmar - Pleasurecraft - Mercruiser - OMC Sterndrive/Cobra - Volvo - GM small & big block with standard deck height
$881.09 $612.27 -
Sold Out, please call for ETA.
Sierra Float MerCruiser #1395-9594 18-72000
Sierra
$26.59 $20.99Sierra Float MerCruiser #1395-9594 18-72000- Part Number:
- 47-72000
- Availability:
- In Stock - Ships same or next business day.
$26.59 $20.99 -
Sierra Gasket Dryjnt Mcs#27-864850A02 18-0722
Sierra
$70.99 $55.33Sierra Gasket Dryjnt Mcs#27-864850A02 18-0722Fits: 4.3L; 5.0L; 5.7L; 6.2L utilizing the Dry Joint Manifold and Riser- Part Number:
- 47-0722
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Restricted
- Replaces:
- Mercruiser 27-864850A02
$70.99 $55.33 -
Sierra Gasket Fuel Pump Ym65024431A000 18-0849
Sierra
$3.89 $3.29Sierra Gasket Fuel Pump Ym65024431A000 18-0849- Part Number:
- 47-0849
- Availability:
- In Stock - Ships same or next business day.
$3.89 $3.29 -
Sierra Gasket-Head GM 7.4L 18-3877
Sierra
$73.29 $55.25Sierra Gasket-Head GM 7.4L 18-3877- Part Number:
- 47-3877
- Availability:
- In Stock - Ships same or next business day.
$73.29 $55.25 -
Sold Out, please call for ETA.
Sierra Glowplug-12V Westerbeke# 24353 23-1000
Sierra
$53.69 $1.30Sierra Glowplug-12V Westerbeke# 24353 23-1000Fits: 4.4 BCD(60Hz); 4.4 WMD(60Hz) / 3.3 WMD(50Hz); 6.0 BCD(60Hz) / 4.5 BCD(50Hz); 7.7 WMD(60Hz) / 5.8 WMD(50Hz); 8.0 BTD(60Hz) / 6.0 BTD(50Hz); 8.0 BTDA(60Hz) / 6.0 BTDA(50Hz); 8.0 WMD(60Hz) / 6.0 WMD(50Hz);...- Part Number:
- 47-231000
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Westerbeke #24353
$53.69 $1.30 -
Sierra Hose Barb 3/8 X 3/8 Male 18-8108
Sierra
$8.09 $6.46Sierra Hose Barb 3/8 X 3/8 Male 18-8108NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8108
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Male
- Replaces:
- -
- Thread:
- 3/8" NPT
- Hose:
- 3/8" Barb
$8.09 $6.46 -
Sold Out, please call for ETA.
Sierra Lower Seal Kt26-43035A4 55-075 18-2626
Sierra
$83.39 $64.99Sierra Lower Seal Kt26-43035A4 55-075 18-2626- Part Number:
- 47-2626
- Availability:
- In Stock - Ships same or next business day.
$83.39 $64.99 -
Sierra Manifold 283-350 Barr#Chv-1-83 18-1997-1
Sierra
$416.89 $297.11Sierra Manifold 283-350 Barr#Chv-1-83 18-1997-1Sierra manifolds are painted; packaged and leak tested.- Part Number:
- 47-19971
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Barr# CHV-1-83
- Application:
- Port & Starboard - Universal center riser manifold. Fits Chris-Craft 283 - 305 - 307 and 350 CID engines.
Crusader 283 and 327 CID engines (up to '64) and 305 - 307 and 350 CID engines ('65 & Newer).
Mercury 190 - 198 - 225 - 250 - 270 - 228 -
$416.89 $297.11
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.