Aftermarket Parts
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Seachoice Steering Cable Protector 28301
Seachoice
$9.68 $8.73Seachoice Steering Cable Protector 28301 Heavy-duty rubber boot to fit over output end of steering cable at engine for complete protection from elements and preventing lubrication from being washed...- Part Number:
- 50-28301
- Availability:
- In Stock - Ships same or next business day.
$9.68 $8.73 -
Seastar Side Mount Control Sailboat Ch2100P
Seastar
$330.89 $224.77Seastar Side Mount Control Sailboat Ch2100P Features single lever/dual action design. Compact construction is perfect for sailboats and other applications where space is at a premium. Drop-in...- Part Number:
- 1-CH2100P
- Availability:
- In Stock - Ships same or next business day.
$330.89 $224.77 -
Sierra Filter Oil-GM/Chev V-6 18-7879-1
Sierra
$10.39 $7.68Sierra Filter Oil-GM/Chev V-6 18-7879-1Sierra high efficiency filters meet OEM specifications for marine use. Epoxy coated inside for corrosion resistance.- Part Number:
- 47-78791
- Availability:
- In Stock - Ships same or next business day.
- Application:
- V6 GM - Chevy
$10.39 $7.68 -
Sierra Fuel Pump Kit 55-250 18-7788
Sierra
$19.89 $15.85Sierra Fuel Pump Kit 55-250 18-7788Contains Gasket (rear); diaphragm (rear); gasket (front/top) diaphragm (front/top).- Part Number:
- 47-7788
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- V4-V6
- OEM #:
- 6E5-24411-00-00
$19.89 $15.85 -
Sierra Marine Boat Lido 2 Fuel Gauge 65496P
Sierra
$56.79 $40.14Sierra Lido 2 Fuel Gauge 65496PFeatures 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...- Part Number:
- 11-65496P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2"
- Type:
- Fuel
- Dial Range:
- E-1/2-F
- Sender Code:
- 90424P
$56.79 $40.14 -
Sierra Tilt-Trim Reservoir 18-6771
Sierra
$71.19 $55.99Sierra Tilt-Trim Reservoir 18-6771- Part Number:
- 47-6771
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Mercury 18525A1
$71.19 $55.99 -
Sierra Tune Up Kit Mc-Pc GM Sb V8 Mpi 18-5247
Sierra
$122.39 $94.55Sierra Tune Up Kit Mc-Pc GM Sb V8 Mpi 18-5247For late model V-8 (Alpha/Bravo 350 Mag; 5.0L; & MX 6.2L).- Part Number:
- 47-5247
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 898253T29
$122.39 $94.55 -
Attwood Marine Fuel Vent Black Poly 5/8 1607-3
Attwood Marine
$14.69 $10.99Attwood Marine Fuel Vent Black Poly 5/8 1607-3 Patented splash-resistant, corrosion-resistant polypropylene. Meets ABYC ventilation specifications. All Attwood fuel tank vents meet or exceed U.S...- Part Number:
- 23-16073
- Availability:
- In Stock - Ships same or next business day.
- Hose:
- 5/8"
- Max Hull Thickness:
- 7/8"
- Hole:
- 3/4"
- Color:
- Black
- Pkg.:
- Retail
$14.69 $10.99 -
Centek 3.5 O.D. 45 Elbow 1200111
Centek
$119.29 $89.99Centek 3.5 O.D. 45 Elbow 1200111 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:
- 383-1200111
- Availability:
- In Stock - Ships same or next business day.
- OD:
- 3-1/2"
- Length:
- 10-1/4"
$119.29 $89.99 -
Centek Elbow - 45 Degree 4" 1200112
Centek
$130.19 $101.45Centek Elbow - 45 Degree 4" 1200112 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:
- 383-1200112
- Availability:
- In Stock - Ships same or next business day.
- OD:
- 4"
- Length:
- 10-1/4"
$130.19 $101.45 -
Centek Muffler-Vernalift 2X2 Side/Top 1500026
Centek
$405.19 $296.78Centek Muffler-Vernalift 2X2 Side/Top 1500026 Extremely effective in reducing engine exhaust noise and preventing water from returning to the engine. High strength design provides a significant...- Part Number:
- 383-1500026
- Availability:
- In Stock - Ships same or next business day.
- A1:
- 2
- A2:
- 2
- B:
- 2.5
- D:
- 8.36
- E:
- 4.68
- F:
- 2
$405.19 $296.78 -
Centek Vernalift Muffler 1500107
Centek
$446.29 $339.83Centek Vernalift Muffler 1500107 Extremely effective in reducing engine exhaust noise and preventing water from returning to the engine. High strength design provides a significant safety margin...- Part Number:
- 383-1500107
- Availability:
- In Stock - Ships same or next business day.
- A1:
- 2
- A2:
- 2
- B:
- 2
- D:
- 10.04
- E:
- 5.3
- F:
- 2.5
$446.29 $339.83 -
Dometic SeaStar Solutions Marine Outboard Clamp Block Kit SA27055P
Seastar
$192.19 $148.98Seastar Clamp Block Kit Sa27055P Transom support mounting universal for all inboard and most outboard motor installations- Part Number:
- 1-SA27055P
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Outdoor Clamp Block - Corrosion Resistant for outboard engines
$192.19 $148.98 -
Martyr Anodes 1 1/4 Magnesium Shaft Anode Cmx05M
Martyr Anodes
$29.29 $19.02Martyr Anodes 1 1/4 Magnesium Shaft Anode Cmx05M Aluminum for salt and brackish waterMagnesium for fresh waterZinc for salt water- Part Number:
- 194-CMX05M
- Availability:
- In Stock - Ships same or next business day.
- ID:
- 1-1/4"
- OD:
- 2-1/2"
- Length:
- 2-1/2"
- Material:
- Magnesium
$29.29 $19.02 -
Martyr Anodes Anode Hull Aluminum Zhc2 Cmzhc2A
Martyr Anodes
$19.99 $14.86Martyr Anodes Anode Hull Aluminum Zhc2 Cmzhc2A Zinc: For use in salt waterAluminum: For use in brackish waterMagnesium: For use in fresh water- Part Number:
- 194-CMZHC2AA
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 5-3/4" L X 2-1/2" W x 3/4" H
- Hole:
- 2-7/8"
- Material:
- Aluminum
$19.99 $14.86 -
Martyr Anodes Rud Anode Cmr1 1-7/8 Cmr01M
Martyr Anodes
$12.99 $7.03Martyr Anodes Rud Anode Cmr1 1-7/8 Cmr01M Zinc: For use in salt waterAluminum: For use in brackish waterMagnesium: For use in fresh water- Part Number:
- 194-CMR01M
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1-7/8" dia. x 1/4"
- Material:
- Magnesium
$12.99 $7.03 -
McGard Marine Single Outboard Motor Locks (M12 x 1.25 Thread Size) - Yamaha/Honda - 74037
McGard Locks
$52.59 $44.99McGard Locks Outboard Lock 50hp Yamaha & Up 74037 Designed to lock the outboard onto the transom, simply replace one of the mounting nuts with a McGard locking nut. A free spinning collar turns if...- Part Number:
- 371-74037
- Availability:
- In Stock - Ships same or next business day.
- Description:
- M12 x 1.25 Yamaha 40+ hp (2-stroke) - 30+ hp (4-stroke) - Honda 40+ hp - Suzuki 25-140 hp (2005 & newer)
- Finish:
- Stainless
$52.59 $44.99 -
NGK Spark Plugs B8Hs-10 Spark Plug 5126
NGK Spark Plugs
$6.59 $4.49NGK Spark Plugs B8Hs-10 Spark Plug 5126 Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-B8HS10
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 5126
- Pkg.:
- Boxed
- What's in the Box:
- 4
$6.59 $4.49 -
Seastar Back Mount Steering Rack No Feedback Single Package SS151
Seastar
$439.69 $327.38Seastar Back Mount Steering Rack No Feedback Single Package SS151 No FeedBack technology and incredible precision of a rack and pinion system, and engineered-in serious advances in steering comfort...- Part Number:
- NW-1SS151K
- Availability:
- In Stock - Ships same or next business day.
$439.69 $327.38 -
Seastar Ball Joints 30 Series Quick Re 31799001
Seastar
$26.59 $16.12Seastar Ball Joints 30 Series Quick Re 31799001- Part Number:
- 1-031799001
- Availability:
- In Stock - Ships same or next business day.
- Cable:
- 3300
- Stud:
- 7/16"
- Thread:
- 11963
$26.59 $16.12
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.