Aftermarket Parts
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Sold Out, please call for ETA.
Sierra 982019 OMC Power Tlt Fs 50A 18-6950
Sierra
$8.10Sierra 982019 OMC Power Tlt Fs 50A 18-6950- Part Number:
- 47-6950
- Availability:
- In Stock - Ships same or next business day.
$8.10 -
Sierra 983895 Impeller Cobra 18-3058
Sierra
$29.49 $24.17Sierra 983895 Impeller Cobra 18-3058- Part Number:
- 47-3058
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- OMC 983895
$29.49 $24.17 -
Sierra 986799 986784 OMC Io Carb Kit 18-7237
Sierra
$158.99 $102.59Sierra 986799 986784 OMC Io Carb Kit 18-7237- Part Number:
- 47-7237
- Availability:
- In Stock - Ships same or next business day.
$158.99 $102.59 -
Sierra Adapteroil Pump-Suzuki 18-9795
Sierra
$15.39 $12.48Sierra Adapteroil Pump-Suzuki 18-9795- Part Number:
- 47-9795
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Adapter - Suzuki
$15.39 $12.48 -
Sierra Air Filter Westerbeke# 39705 23-1101
Sierra
$10.76Sierra Air Filter Westerbeke# 39705 23-1101- Part Number:
- 47-231101
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Westerbeke
#39705 - Fits:
- 8.0 BTDA(60Hz) / 6.0 BTDA(50Hz) - 10.0 BTDA(60Hz) / 7.5 BTDA(50Hz) 12.5 BTDB(60Hz) / 9.4 BTDB(50Hz) 15.0 BTDC(60Hz) / 12.0 BTDC(50Hz)
$10.76 -
Sold Out, please call for ETA.
Sierra Aircharge Temp Sendr Vp3854527 18-7702
Sierra
$59.79 $46.58Sierra Aircharge Temp Sendr Vp3854527 18-7702- Part Number:
- 47-7702
- Availability:
- In Stock - Ships same or next business day.
$59.79 $46.58 -
Sold Out, please call for ETA.
Sierra Alt Conv Kit 3.7L MerCruiser #804916A 1 18-5953-1
Sierra
$1,338.59 $1,060.75Sierra Alt Conv Kit 3.7L MerCruiser #804916A 1 18-5953-1Includes new 68 AMP alternator; mounting brackets 18-5968; pulley; wiring; hardware and instructions. Converts model 470 aluminum block MerCruiser engines serial number 4625580 & up with stator...- Part Number:
- 47-59531
- Availability:
- In Stock - Ships same or next business day.
- Type:
- New
$1,338.59 $1,060.75 -
Sold Out, please call for ETA.
Sierra Alternator-51Amp Presto-Motor 18-6260
Sierra
$286.29 $275.44Sierra Alternator-51Amp Presto-Motor 18-6260- Part Number:
- 47-6260
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- OMC Cobra
- OEM #:
- Prestolite/Motorola
- Type:
- New
$286.29 $275.44 -
Sierra Amega Domed Speedo Kit 65 Mph 57900P
Sierra
$118.64 $101.62Sierra Amega Domed Speedo Kit 65 Mph 57900PSmart white and red graphics on a black dial background; these very low profile bezels follow the curve of the lenses to eliminate water trapping. Design with domed glass sheds water and resists scratching...- Part Number:
- 11-57900P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 3"
- Type:
- Speedo Kit (includes pitot and hose)
- Dial Range:
- 10-65 mph
- Sender Code:
- G included
$118.64 $101.62 -
Sierra Amega Doomed 2 Hourmeter 12-24 84760P
Sierra
$105.89 $88.25Sierra Amega Doomed 2 Hourmeter 12-24 84760PSmart white and red graphics on a black dial background; these very low profile bezels follow the curve of the lenses to eliminate water trapping. Design with domed glass sheds water and resists scratching...- Part Number:
- 11-84760P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2"
- Type:
- Hourmeter
- Dial Range:
- 10 -000 hrs.
- Sender Code:
- N/R
$105.89 $88.25 -
Sierra Amega Gauge Kit-Water Temp O/B 58862P
Sierra
$120.99 $100.94Sierra Amega Gauge Kit-Water Temp O/B 58862PSmart white and red graphics on a black dial background; these very low profile bezels follow the curve of the lenses to eliminate water trapping. Design with domed glass sheds water and resists scratching...- Part Number:
- 11-58862P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2"
- Type:
- Water Temp Kit - Outboard (Cold/Hot)
- Dial Range:
- 100 Deg - F-220 Deg - F
- Sender Code:
- J included
$120.99 $100.94 -
Sierra Amega Trim J/E Suz 4 Stroke 58431P
Sierra
$58.29 $49.34Sierra Amega Trim J/E Suz 4 Stroke 58431PSmart white and red graphics on a black dial background; these very low profile bezels follow the curve of the lenses to eliminate water trapping. Design with domed glass sheds water and resists scratching...- Part Number:
- 11-58431P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2"
- Type:
- Trim - Evinrude/Johnson Outboard
- Dial Range:
- Up-Down
- Sender Code:
- Engine Mfr. Supply
$58.29 $49.34 -
Sierra Anode Kit Gen Ii (Mg) 18-6158M
Sierra
$193.89 $174.29Sierra Anode Kit Gen Ii (Mg) 18-6158M- Part Number:
- 47-6158M
- Availability:
- In Stock - Ships same or next business day.
- Application:
- 1991 & up
- OEM #:
- 888755Q01
- Material:
- Magnesium
$193.89 $174.29 -
Sierra Anode Mounting Bolt 18-6245
Sierra
$15.49 $12.05Sierra Anode Mounting Bolt 18-6245- Part Number:
- 47-6245
- Availability:
- In Stock - Ships same or next business day.
$15.49 $12.05 -
Sierra Anode Yam 688-45371-02-00 18-6070
Sierra
$31.79 $27.62Sierra Anode Yam 688-45371-02-00 18-6070- Part Number:
- 47-6070
- Availability:
- In Stock - Ships same or next business day.
$31.79 $27.62 -
Sold Out, please call for ETA.
Sierra Anode Yanmar 27210-200200 18-6200
Sierra
$10.59 $8.30Sierra Anode Yanmar 27210-200200 18-6200- Part Number:
- 47-6200
- Availability:
- In Stock - Ships same or next business day.
$10.59 $8.30 -
Sierra Arctic 3 Speedo Kit 65 Mph 68371P
Sierra
$135.19 $112.44Sierra Arctic 3 Speedo Kit 65 Mph 68371PStylish White bezel design; black on white graphics; accurate and reliable; these tough instruments look good on all types of boats. Domed glass sheds water and resists scratching. Instruments available for most...- Part Number:
- 11-68371P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 3"
- Type:
- Speedo Kit (includes pitot and hose)
- Dial Range:
- 10-65 mph
- Sender Code:
- G included
$135.19 $112.44 -
Sierra Arctic Gauge H20 Pres Ob 40Psi 68369P
Sierra
$146.79 $121.07Sierra Arctic Gauge H20 Pres Ob 40Psi 68369PStylish White bezel design; black on white graphics; accurate and reliable; these tough instruments look good on all types of boats. Domed glass sheds water and resists scratching. Instruments available for...- Part Number:
- 11-68369P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2"
- Type:
- Water Pressure Kit - Outboard (contains fittings and 20 ft. of tubing)
- Dial Range:
- 0-40 psi
- Sender Code:
- WP included
$146.79 $121.07 -
Sierra Bellows 18-1074
Sierra
$55.09 $45.74Sierra Bellows 18-1074- Part Number:
- 47-1074
- Availability:
- In Stock - Ships same or next business day.
- Application:
- All cone clutch models ('94 & Newer) not using exhaust boot - Vovlo - for SX drives. Includes 302 - 432 - 434 - 502 - 572 - 584 & 744 ('94-'98).
- Replaces:
- 3850426
$55.09 $45.74 -
Sierra Black Sterling Fuel Gauge 67021P
Sierra
$55.99 $47.54Sierra Black Sterling Fuel Gauge 67021PBlack Sterling instruments have white graphics and black background on spun aluminum dial; scratch-resistant domed glass lens; perimeter lit dial; elite stainless steel bezel; black pointer with fire orange tip. Fit...- Part Number:
- 11-67021P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2"
- Type:
- Fuel Gauge
- Dial Range:
- E - 1/2 - F
- Sender Code:
- F
$55.99 $47.54
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.