Aftermarket Parts
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Sold Out, please call for ETA.
Sierra Flame Arrestor Mc85785A2 & 18-7231
Sierra
$215.79 $154.00Sierra Flame Arrestor Mc85785A2 & 18-7231- Part Number:
- 47-7231
- Availability:
- In Stock - Ships same or next business day.
$215.79 $154.00 -
Sold Out, please call for ETA.
Sierra Flame Arrestor Merc.805016A 1 18-7228
Sierra
$161.69 $92.22Sierra Flame Arrestor Merc.805016A 1 18-7228- Part Number:
- 47-7228
- Availability:
- In Stock - Ships same or next business day.
$161.69 $92.22 -
Sierra Fuel Pump Mc62092T/Omc/Pls/Cru 18-7267
Sierra
$218.99 $161.69Sierra Fuel Pump Mc62092T/Omc/Pls/Cru 18-7267- Part Number:
- 47-7267
- Availability:
- In Stock - Ships same or next business day.
$218.99 $161.69 -
Sold Out, please call for ETA.
Sierra Gasket Kit 18-1277
Sierra
$130.99 $97.43Sierra Gasket Kit 18-1277- Part Number:
- 47-1277
- Availability:
- In Stock - Ships same or next business day.
$130.99 $97.43 -
Sierra Gasket MerCruiser 27-48399(Nla Merc) 18-0462
Sierra
$11.59 $9.21Sierra Gasket MerCruiser 27-48399(Nla Merc) 18-0462- Part Number:
- 47-0462
- Availability:
- In Stock - Ships same or next business day.
$11.59 $9.21 -
Sold Out, please call for ETA.
Sierra Gasket-Thermostat Ym6G8-12414-A0 18-99120
Sierra
$7.29 $5.34Sierra Gasket-Thermostat Ym6G8-12414-A0 18-99120- Part Number:
- 47-99120
- Availability:
- In Stock - Ships same or next business day.
$7.29 $5.34 -
Sold Out, please call for ETA.
Sierra Gaskethd-Chv 7.4L 27-850470 18-3887
Sierra
$102.59 $79.99Sierra Gaskethd-Chv 7.4L 27-850470 18-3887- Part Number:
- 47-3887
- Availability:
- In Stock - Ships same or next business day.
$102.59 $79.99 -
Sierra Hose-Exhaust 18-2780-1
Sierra
$50.29 $38.41Sierra Hose-Exhaust 18-2780-1- Part Number:
- 47-27801
- Availability:
- In Stock - Ships same or next business day.
- Description:
- OMC Cobra & Volvo
- Replaces:
- 3852741 & 3863450
$50.29 $38.41 -
Sold Out, please call for ETA.
Sierra Impeller Kit-Nl# 25-12009 23-3315
Sierra
$44.49 $38.67Sierra Impeller Kit-Nl# 25-12009 23-3315- Part Number:
- 47-233315
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Northern Lights 25-12009
- Fits:
- M673LD3 - M673L3 - M673LD2 - M673L2
$44.49 $38.67 -
Sierra Impeller Kit-Onan# 541-1519 23-3310
Sierra
$40.49 $39.99Sierra Impeller Kit-Onan# 541-1519 23-3310- Part Number:
- 47-233310
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Onan #541-1519
- Fits:
- MDKBK - MDKBL - MDKBM - MDKBN - MDKAL/A/B
$40.49 $39.99 -
Sierra Lido 3 Oil Pressure 0-80Psi 65501P
Sierra
$54.99 $41.65Sierra Lido 3 Oil Pressure 0-80Psi 65501PFeatures include: Black graphics on a white face with chrome ring and a black pointer with fire-orange tip. Scratch resistant curved glass lens with polished stainless steel; near-flush bezel. white perimeter and...- Part Number:
- 11-65501P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2"
- Type:
- Oil Pressure
- Dial Range:
- 0-80 psi
- Sender Code:
- IA 15001-Single/IA15003 - Dual Station
$54.99 $41.65 -
Sold Out, please call for ETA.
Sierra Manifold- 4Cylinder Vp#834438-4 18-1930-2
Sierra
$627.29 $456.78Sierra Manifold- 4Cylinder Vp#834438-4 18-1930-2Sierra manifolds are painted; packaged and leak tested.- Part Number:
- 47-19302
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Sierra 18-1930-1 - Volvo 855387 - 834438 -
OSCO VO418 - Mallory 9-40900 - Barr VO-1-855387 - Application:
- AQ120 - 125A - 131A - 140A - 145A - 145A - 151 - BB140A - 154A - 230A - 250A.
Includes mounting gaskets and drain plug.
$627.29 $456.78 -
Sierra Merc/Mar/Yam 5/16 Fem Fuel Co 18-8085
Sierra
$12.99 $11.05Sierra Merc/Mar/Yam 5/16 Fem Fuel Co 18-8085- Part Number:
- 47-8085
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose - Female
- Fits:
- Mercury/Mariner
- Application:
- Mates with 18-8077-1
- Replaces:
- -
- Thread:
- -
- Hose:
- 5/16"
$12.99 $11.05 -
Sierra Mercury O/B Carburetor Kit 18-7013
Sierra
$30.59 $22.77Sierra Mercury O/B Carburetor Kit 18-7013- Part Number:
- 47-7013
- Availability:
- In Stock - Ships same or next business day.
$30.59 $22.77 -
Sold Out, please call for ETA.
Sierra Mounting Kit-Marine Powr Elbow 18-8529
Sierra
$18.89 $14.96Sierra Mounting Kit-Marine Powr Elbow 18-8529- Part Number:
- 47-8529
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Mercruiser exhaust elbow mounting kit. Use with riser 19701
$18.89 $14.96 -
Sierra P Fuel Pump Electric Jv385765 18-7330
Sierra
$285.09 $193.52Sierra P Fuel Pump Electric Jv385765 18-7330- Part Number:
- 47-7330
- Availability:
- In Stock - Ships same or next business day.
$285.09 $193.52 -
Sierra P Water Pump Kit J/E 393630 18-3382
Sierra
$60.49 $52.99Sierra P Water Pump Kit J/E 393630 18-3382- Part Number:
- 47-3382
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 393630
$60.49 $52.99 -
Sierra Premium Marine Spark Plug Wire Set GM & Ford V8 Conv 18-8803-2
Sierra
$71.49 $59.99Sierra Wire Set GM & Ford V8 Conv 18-8803-2Magnetic Suppression Core manufactured for your specific application.Kevlar® core for maximum durability and long lifeDurable stainless steel wound conductor for maximum horsepower and engine...- Part Number:
- 47-88032
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Flagship - Indmar - Marine Power & Mastercraft - 302 - 351 - 5.7L - 5.8L ('74 FF & R models) - 350 - 454 - 5.7L - 7.4L - 8 cylinder - conventional ignition. Mercruiser - 280 - 330 - 370 - 400 - 440 - 460 - GM 198 - 225 - 228 - 250 - 260 - 898 - Ford
$71.49 $59.99 -
Sierra Primer Bulb 3/8In Epa 18-8005Ep-1
Sierra
$35.69 $27.99Sierra Primer Bulb 3/8In Epa 18-8005Ep-1Primer bulbs meet 2011 EPA regulations for low permeation of fuel with the look and feel of the previous bulbs. They offer superior resistance to UV; ozone; and alcohol enhanced fuel. Check valves feature stainless...- Part Number:
- 47-8005EP1
- Availability:
- In Stock - Ships same or next business day.
- Hose:
- 3/8" ID
- Fits:
- Mercury 1330A3 - 13330A3 - Johnson/Evinrude 174512
$35.69 $27.99 -
Sierra Primer Bulb 5/16In Epa 18-8004Ep-1
Sierra
$44.99 $27.99Sierra Primer Bulb 5/16In Epa 18-8004Ep-1Primer bulbs meet 2011 EPA regulations for low permeation of fuel with the look and feel of the previous bulbs. They offer superior resistance to UV; ozone; and alcohol enhanced fuel. Check valves feature...- Part Number:
- 47-8004EP1
- Availability:
- In Stock - Ships same or next business day.
- Hose:
- 5/16" ID
- Fits:
- Mercury 89396A38 - 89396Q38 - Johnson/Evinrude 175411
$44.99 $27.99
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.