Aftermarket Parts
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Sierra Fuel Filter 18-7865
Sierra
$18.79 $12.28Sierra Fuel Filter 18-7865- Part Number:
- 47-7865
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Repl. Filter
- Replaces:
- Yamaha MAR-MINIF-IL-TR
- Size:
- 10 Micron
$18.79 $12.28 -
Sierra Gasket-Exhaust Manifold GM7.4-8.2L 18-0418
Sierra
$24.19 $19.47Sierra Gasket-Exhaust Manifold GM7.4-8.2L 18-0418- Part Number:
- 47-0418
- Availability:
- In Stock - Ships same or next business day.
$24.19 $19.47 -
Sold Out, please call for ETA.
Sierra Gasket-Water Pump GM 4.3L-5.7L 18-0891
Sierra
$1.81Sierra Gasket-Water Pump GM 4.3L-5.7L 18-0891- Part Number:
- 47-0891
- Availability:
- In Stock - Ships same or next business day.
$1.81 -
Sierra Riser Spacer-3In Marine Power Cr 18-1908
Sierra
$206.89 $174.72Sierra Riser Spacer-3In Marine Power Cr 18-1908- Part Number:
- 47-1908
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Mercruiser GM V6 229 and 262 CID (models 185 and 205) - GM small block V8 - 305-350 CID (models 200 - 228 - 230 - 260 and 898) - GM big block V8 - 454 CID (models 330 - 340 and 7.4L). Use with manifold 19521 - 19531 - 19571
$206.89 $174.72 -
Sierra T Wrench Spanner Nut (Tool) 18-9803
Sierra
$138.89 $112.76Sierra T Wrench Spanner Nut (Tool) 18-9803Replaces: Mercury Mariner 91-17256Removes and installs driveshaft bearing retainer on MC-1; R-MR; Blackhawk; all Bravo and all Alpha drive units.- Part Number:
- 47-9803
- Availability:
- In Stock - Ships same or next business day.
$138.89 $112.76 -
Sierra Tune Up Kit Mallory 4 Cylinder 18-5283
Sierra
$106.59 $84.99Sierra Tune Up Kit Mallory 4 Cylinder 18-5283- Part Number:
- 47-5283
- Availability:
- In Stock - Ships same or next business day.
$106.59 $84.99 -
Sierra Tune Up Kit OMC 172523 18-5002
Sierra
$42.89 $22.79Sierra Tune Up Kit OMC 172523 18-5002Contains: Contact sets (2); condenser (2)- Part Number:
- 47-5002
- Availability:
- In Stock - Ships same or next business day.
- Application:
- 18-40 HP various models 1962-1976
- Replaces:
- OMC 172523
$42.89 $22.79 -
Sierra Wire 7In Plug Mercury/Force 18-8819-1
Sierra
$23.99 $18.24Sierra Wire 7In Plug Mercury/Force 18-8819-1Magnetic Suppression Core manufactured for your specific application.Kevlar® core for maximum durability and long lifeDurable stainless steel wound...- Part Number:
- 47-88191
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Chrysler/Force/Mercury/Mariner - 7" wire
$23.99 $18.24 -
Sierra Wire Set-Cr 7.4-8.2Xl Str Boot 18-8844-1
Sierra
$104.09 $74.11Sierra Wire Set-Cr 7.4-8.2Xl Str Boot 18-8844-1Magnetic Suppression Core manufactured for your specific application.Kevlar® core for maximum durability and long lifeDurable stainless steel wound...- Part Number:
- 47-88441
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Crusader 454/502 XL Series (straight boot on plug end)
$104.09 $74.11 -
Uflex Steering Wheel White Poly Chrome Morosini U/Ch/W
Uflex
$292.89 $216.68Uflex Steering Wheel White Poly Chrome Morosini U/Ch/W 3 spoke Fits standard 3/4" tapered shaft Hub included- Part Number:
- 216-MOROSINIUCHW
- Availability:
- In Stock - Ships same or next business day.
- Grip:
- Polyurethane w/ painted hub
- Color:
- White
- Dia.:
- 13.8"
$292.89 $216.68 -
Uflex Steering Wheel White PVC Grip Corse-with S
Uflex
$179.99 $155.99Uflex Steering Wheel White PVC Grip Corse-with S Aluminum frame 3 spoke Fits standard 3/4" tapered shaft Soft Touch PVC grip- Part Number:
- 216-CORSEWS
- Availability:
- In Stock - Ships same or next business day.
- Rim:
- White
- Spokes:
- Silver
- Dia.:
- 13.5"
$179.99 $155.99 -
Centek 4" Dynamax Muffler 1005003
Centek
$425.19 $304.78Centek 4" Dynamax Muffler 1005003 For use where there is a shortage of space or V Drive applications. For Gas/Diesel fuel type. For above the waterline only.- Part Number:
- 383-1005003
- Availability:
- In Stock - Ships same or next business day.
- Ports:
- 4"
- Dia.:
- 16-3/4"
- Length:
- 6.38"
$425.19 $304.78 -
Centek 5.00 x 6.00 Coupler 1200148
Centek
$207.99 $155.12Centek 5.00 x 6.00 Coupler 1200148 These fittings are made of the same fiberglass and fire retardant resins used to make Vernatube. Fittings, couplings and elbows are lightweight, strong,...- Part Number:
- 383-1200148
- Availability:
- In Stock - Ships same or next business day.
- OD:
- 5" to 6"
- Length:
- 14"
$207.99 $155.12 -
CRC Wire Dryer 6oz 5104
CRC
$13.09 $11.20CRC Wire Dryer 6oz 5104 Starts wet engines and instantly drives out moisture that can cause electrical failure and hard starting. Cleans and weatherproofs all electrical system parts. Waterproof...- Part Number:
- 77-05104
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 6 oz. Aerosol
$13.09 $11.20 -
Groco Filter Element For Gf 375 Gf-376
Groco
$57.00 $41.19Groco Filter Element For Gf 375 Gf-376Separate dirt and water from fuel. 2-5 micron filtration. Use with gasoline or diesel fuel. Marine UL listed. Pressure tested bronze castings. Piping not...- Part Number:
- 34-GF376
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Filter Element
- Fits:
- GF375
$57.00 $41.19 -
Jabsco Cam 6-69880000
Jabsco
$132.49 $68.06Jabsco Cam 6-69880000- Part Number:
- 6-69880000
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Cam
$132.49 $68.06 -
Jabsco Mechanical Seal 6408-0000
Jabsco
$153.59 $78.88Jabsco Mechanical Seal 6408-0000- Part Number:
- 6-64080000
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Mechanical Seal
$153.59 $78.88 -
Martyr Anodes 1 Zinc Shaft Anode Cmx03
Martyr Anodes
$12.63Martyr Anodes 1 Zinc Shaft Anode Cmx03 Aluminum for salt and brackish waterMagnesium for fresh waterZinc for salt water- Part Number:
- 194-CMX03
- Availability:
- In Stock - Ships same or next business day.
- ID:
- 1"
- OD:
- 2-1/8"
- Length:
- 2-1/8"
- Material:
- Zinc
$12.63 -
Martyr Anodes 1/4 Dia Pencil Complete Cme00
Martyr Anodes
$7.09 $4.59Martyr Anodes 1/4 Dia Pencil Complete Cme00- Part Number:
- 194-CME00
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1/4" x 2"
- Plug:
- 1/8" NPT
- UNC:
- 1/4"
- Material:
- Zinc
$7.09 $4.59 -
NGK Spark Plugs 4214 Spark Plug Iridium 4214
NGK Spark Plugs
$30.69 $16.85NGK Spark Plugs 4214 Spark Plug Iridium 4214 Original equipment on many late model applications Iridium at the fine-wire center electrode and platinum at the ground electrode provides maximum...- Part Number:
- 41-IZFR7M
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4214
- What's in the Box:
- (1) Spark Plug
$30.69 $16.85
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.