Aftermarket Parts
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Sold Out, please call for ETA.
Sierra Oil Seal J/E 18-2075
Sierra
$0.00Sierra Oil Seal J/E 18-2075- Part Number:
- 47-2075
- Availability:
- In Stock - Ships same or next business day.
$0.00 -
Sold Out, please call for ETA.
Sierra Oil Seal OMC 321466 55-062 18-2059
Sierra
$16.09 $12.21Sierra Oil Seal OMC 321466 55-062 18-2059- Part Number:
- 47-2059
- Availability:
- In Stock - Ships same or next business day.
$16.09 $12.21 -
Sold Out, please call for ETA.
Sierra Oil Seal OMC 321788 18-2032
Sierra
$10.19 $7.99Sierra Oil Seal OMC 321788 18-2032- Part Number:
- 47-2032
- Availability:
- In Stock - Ships same or next business day.
$10.19 $7.99 -
Sierra Oil Seal OMC 329922 55-025 18-2061
Sierra
$10.29 $7.71Sierra Oil Seal OMC 329922 55-025 18-2061- Part Number:
- 47-2061
- Availability:
- In Stock - Ships same or next business day.
$10.29 $7.71 -
Sold Out, please call for ETA.
Sierra Oil Seal OMC 911019 18-2066
Sierra
$26.59 $1.30Sierra Oil Seal OMC 911019 18-2066- Part Number:
- 47-2066
- Availability:
- In Stock - Ships same or next business day.
$26.59 $1.30 -
Sierra Oil Seal OMC 911685 18-2067
Sierra
$34.89 $28.35Sierra Oil Seal OMC 911685 18-2067- Part Number:
- 47-2067
- Availability:
- In Stock - Ships same or next business day.
$34.89 $28.35 -
Sold Out, please call for ETA.
Sierra Oil Seal/Force 18-0593
Sierra
$11.29 $1.30Sierra Oil Seal/Force 18-0593- Part Number:
- 47-0593
- Availability:
- In Stock - Ships same or next business day.
$11.29 $1.30 -
Sierra Oil Seal/Mercury-Force 18-0583
Sierra
$16.29 $12.49Sierra Oil Seal/Mercury-Force 18-0583- Part Number:
- 47-0583
- Availability:
- In Stock - Ships same or next business day.
$16.29 $12.49 -
Sierra Oil Seal/OMC 18-8300
Sierra
$16.99 $13.24Sierra Oil Seal/OMC 18-8300- Part Number:
- 47-8300
- Availability:
- In Stock - Ships same or next business day.
$16.99 $13.24 -
Sold Out, please call for ETA.
Sierra Oil Sealdt40C-Suzuki 18-8345
Sierra
$0.00Sierra Oil Sealdt40C-Suzuki 18-8345- Part Number:
- 47-8345
- Availability:
- In Stock - Ships same or next business day.
$0.00 -
Sierra Oil Strainer-El Ym68F-13440-00 18-79971
Sierra
$17.09 $13.04Sierra Oil Strainer-El Ym68F-13440-00 18-79971- Part Number:
- 47-79971
- Availability:
- In Stock - Ships same or next business day.
$17.09 $13.04 -
Sold Out, please call for ETA.
Sierra Oil-TC-W3 Direct Injection 2.5 Gal 18-9530-4
Sierra
$24.00Sierra Oil-TC-W3 Direct Injection 2.5 Gal 18-9530-4High performance lubricant specifically designed to meet the needs of today's high-tech direct injected engines. A semi-synthetic oil that will protect your engine in the most demanding marine conditions...- Part Number:
- 47-95304
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2.5 Gallon
$24.00 -
Sierra Oil-TC-W3 Direct Injection Gal 18-9530-3
Sierra
$64.69 $63.89Sierra Oil-TC-W3 Direct Injection Gal 18-9530-3- Part Number:
- 47-95303
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1 Gallon
$64.69 $63.89 -
Sierra Om Fuel Fit 5/16 Barb 55-81 18-8056
Sierra
$9.29 $7.63Sierra Om Fuel Fit 5/16 Barb 55-81 18-8056- Part Number:
- 47-8056
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose - Female
- Fits:
- Johnson/Evinrude
- Application:
- Mates with 18-8063
- Replaces:
- 174508 - 775640
- Thread:
- -
- Hose:
- 5/16"
$9.29 $7.63 -
Sold Out, please call for ETA.
Sierra Om Intake Manifold Gasket 328622 18-0142
Sierra
$15.79 $1.30Sierra Om Intake Manifold Gasket 328622 18-0142- Part Number:
- 47-0142
- Availability:
- In Stock - Ships same or next business day.
$15.79 $1.30 -
Sierra Om Seal Kit OMC 984458 18-2672
Sierra
$89.99 $68.52Sierra Om Seal Kit OMC 984458 18-2672- Part Number:
- 47-2672
- Availability:
- In Stock - Ships same or next business day.
$89.99 $68.52 -
Sold Out, please call for ETA.
Sierra Om Water Pump Kit 55-095 18-3393
Sierra
$99.69 $76.97Sierra Om Water Pump Kit 55-095 18-3393- Part Number:
- 47-3393
- Availability:
- In Stock - Ships same or next business day.
$99.69 $76.97 -
Sold Out, please call for ETA.
Sierra OMC Cobra Clutch Dog 18-2383
Sierra
$0.00Sierra OMC Cobra Clutch Dog 18-2383- Part Number:
- 47-2383
- Availability:
- In Stock - Ships same or next business day.
$0.00 -
Sierra OMC Cobra Drain Screw 18-1236
Sierra
$11.19 $8.33Sierra OMC Cobra Drain Screw 18-1236- Part Number:
- 47-1236
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- OMC Sterndrive/Cobra drives & V6 - 40-50 hp ('89-'97). OEM # 309243
- Drain Screw:
- Magnetic Drain Screw
$11.19 $8.33 -
Sold Out, please call for ETA.
Sierra OMC Cobra Shaft & Stub Assembly 18-6399
Sierra
$399.49 $9.09Sierra OMC Cobra Shaft & Stub Assembly 18-6399- Part Number:
- 47-6399
- Availability:
- In Stock - Ships same or next business day.
$399.49 $9.09
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.