Aftermarket Parts
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Sold Out, please call for ETA.
Sierra Brass Fit 1/4Nptx1/4 Hs55-842 18-8042
Sierra
$0.00Sierra Brass Fit 1/4Nptx1/4 Hs55-842 18-8042NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8042
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Male
- Thread:
- 1/4" NPT
- Hose:
- 1/4" Barb
$0.00 -
Sierra Brass Fitting 1/4Nptx1/4Hose Femal 18-8094
Sierra
$0.00Sierra Brass Fitting 1/4Nptx1/4Hose Femal 18-8094NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8094
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Female
- Thread:
- 1/4" NPT
- Hose:
- 5/16" Barb
$0.00 -
Sierra Brass Fitting 1/4Nptx3/8 Hose 18-8074
Sierra
$8.19 $7.06Sierra Brass Fitting 1/4Nptx3/8 Hose 18-8074NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8074
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Male
- Replaces:
- Johnson/Evinrude 173312
- Thread:
- 1/4" NPT
- Hose:
- 3/8" Barb
$8.19 $7.06 -
Sold Out, please call for ETA.
Sierra Brass Fitting 1/4Nptx3/8Hose Femal 18-8095
Sierra
$0.00Sierra Brass Fitting 1/4Nptx3/8Hose Femal 18-8095NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8095
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Female
- Replaces:
- -
- Thread:
- 1/4" NPT
- Hose:
- 3/8" Barb
$0.00 -
Sold Out, please call for ETA.
Sierra Brass Fitting 1/8Nptx1/4 Hose 18-8043
Sierra
$0.00Sierra Brass Fitting 1/8Nptx1/4 Hose 18-8043NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8043
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Male
- Replaces:
- -
- Thread:
- 1/8" NPT
- Hose:
- 1/4" Barb
$0.00 -
Sold Out, please call for ETA.
Sierra Brass Fitting 1/8Nptx3/8 Hose 18-8073
Sierra
$0.00Sierra Brass Fitting 1/8Nptx3/8 Hose 18-8073NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8073
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Male
- Replaces:
- -
- Thread:
- 1/8" NPT
- Hose:
- 3/8" Barb
$0.00 -
Sold Out, please call for ETA.
Sierra Brass Fitting 1/8Nptx5/16 Hos 18-8054
Sierra
$0.00Sierra Brass Fitting 1/8Nptx5/16 Hos 18-8054NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8054
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Male
- Replaces:
- OMC 22-63186
- Thread:
- 1/8" NPT
- Hose:
- 5/16" Barb
$0.00 -
Sierra Brass Float Mc1397-3327 18-7200
Sierra
$22.89 $18.41Sierra Brass Float Mc1397-3327 18-7200- Part Number:
- 47-7200
- Availability:
- In Stock - Ships same or next business day.
$22.89 $18.41 -
Sold Out, please call for ETA.
Sierra Brass Ftg 1/4Nptx1/4Hose.Femal 18-8093
Sierra
$0.00Sierra Brass Ftg 1/4Nptx1/4Hose.Femal 18-8093NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8093
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Female
- Replaces:
- -
- Thread:
- 1/4" NPT
- Hose:
- 1/4" Barb
$0.00 -
Sold Out, please call for ETA.
Sierra Brass Tank Elbow - 1/4 Npt 18-8047
Sierra
$0.00Sierra Brass Tank Elbow - 1/4 Npt 18-8047NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8047
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- 90 Deg - Elbow
- Replaces:
- -
- Thread:
- 1/4" NPT
- Hose:
- -
$0.00 -
Sierra Brg Pinion Mc31-42647A 1 18-1117
Sierra
$59.79 $42.16Sierra Brg Pinion Mc31-42647A 1 18-1117- Part Number:
- 47-1117
- Availability:
- In Stock - Ships same or next business day.
$59.79 $42.16 -
Sold Out, please call for ETA.
Sierra Brush Set Starter Motor 18-5717
Sierra
$0.00Sierra Brush Set Starter Motor 18-5717- Part Number:
- 47-5717
- Availability:
- In Stock - Ships same or next business day.
$0.00 -
Sold Out, please call for ETA.
Sierra Bushing-Pt Pcm#Ro94020A 8/Pk 18-2702-1-9
Sierra
$0.00Sierra Bushing-Pt Pcm#Ro94020A 8/Pk 18-2702-1-9- Part Number:
- 47-270219
- Availability:
- In Stock - Ships same or next business day.
$0.00 -
Sierra C/S Seal OMC 313992 55-230 18-2016
Sierra
$15.59 $12.21Sierra C/S Seal OMC 313992 55-230 18-2016- Part Number:
- 47-2016
- Availability:
- In Stock - Ships same or next business day.
$15.59 $12.21 -
Sold Out, please call for ETA.
Sierra Camshaft Sensor Pcm# R020035A 18-7646
Sierra
$0.00Sierra Camshaft Sensor Pcm# R020035A 18-7646- Part Number:
- 47-7646
- Availability:
- In Stock - Ships same or next business day.
$0.00 -
Sold Out, please call for ETA.
Sierra Carb 2 Bbl Rochester 55-7000 18-7610-1
Sierra
$9.25Sierra Carb 2 Bbl Rochester 55-7000 18-7610-1Sierra's marine aftermarket for high quality remanufactured carburetors. With carefully selected cores that are brought back to exacting OEM specifications. Each unit is flow tested to ensure proper operation...- Part Number:
- 47-76101
- Availability:
- In Stock - Ships same or next business day.
- Mfg:
- Rochester
- Mfg #:
- 17081060
- Type:
- R2/2GC
- OEM:
- Mercruiser
- OEM #:
- 1347-8186211R02
- Application:
- MCM 120/2.5L (1983-1989) - 140/3.0L (1983-1989)
$9.25 -
Sold Out, please call for ETA.
Sierra Carb 4 Bbl Quadro Jet Rochest 18-7604-1
Sierra
$749.69 $16.89Sierra Carb 4 Bbl Quadro Jet Rochest 18-7604-1Sierra's marine aftermarket for high quality remanufactured carburetors. With carefully selected cores that are brought back to exacting OEM specifications. Each unit is flow tested to ensure proper operation...- Part Number:
- 47-76041
- Availability:
- In Stock - Ships same or next business day.
- Mfg:
- Rochester
- Mfg #:
- N/A
- Type:
- R4/4MV
- OEM:
- Mercruiser
- OEM #:
- 1347-804623R02
- Application:
- MCM 205/4.3LX (1985-1991)
$749.69 $16.89 -
Sold Out, please call for ETA.
Sierra Carb Flange Gasket MerCruiser #27-63309 18-2572
Sierra
$2.19 $1.91Sierra Carb Flange Gasket MerCruiser #27-63309 18-2572- Part Number:
- 47-2572
- Availability:
- In Stock - Ships same or next business day.
$2.19 $1.91 -
Sold Out, please call for ETA.
Sierra Carb Kit 18-7022
Sierra
$70.19 $1.30Sierra Carb Kit 18-7022- Part Number:
- 47-7022
- Availability:
- In Stock - Ships same or next business day.
$70.19 $1.30 -
Sierra Carb Kit 18-7043
Sierra
$32.49 $21.66Sierra Carb Kit 18-7043- Part Number:
- 47-7043
- Availability:
- In Stock - Ships same or next business day.
- OEM #:
- J/E # 382047 - 382049 - 383052 - 383067 - 398532 - 439071
$32.49 $21.66
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.