Aftermarket Parts
-
Sierra Head Gasket Set-GM 5.7L Vortec 18-1254
Sierra
$290.09 $189.99Sierra Head Gasket Set-GM 5.7L Vortec 18-1254- Part Number:
- 47-1254
- Availability:
- In Stock - Ships same or next business day.
$290.09 $189.99 -
Sierra Impeller Jabsco#17954-0001P 18-3087
Sierra
$41.99 $21.41Sierra Impeller Jabsco#17954-0001P 18-3087- Part Number:
- 47-3087
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Mercury 47-59362 - 47-59362T
$41.99 $21.41 -
Sierra Premium Marine Spark Plug Wire Set Mc 5.0-5.7-6.2L V8 Mpi 18-8828-1
Sierra
$146.19 $109.99Sierra Wire Set Mc5.0-5.7-6.2L V8 Mpi 18-8828-1Magnetic 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:
- 47-88281
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Mercruiser - 5.0L MIE MPI 8 cylinder - Delco HEI ignition
$146.19 $109.99 -
Sierra Sterling Fuel Gauge 63477P
Sierra
$55.99 $39.99Sierra Sterling Fuel Gauge 63477PBlack graphics on a brushed aluminum dial background. Pointers are black. Perimeter lighting is provided for night visibility. Domed glass convex lenses are scratch resistant.- Part Number:
- 11-63477P
- 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 $39.99 -
Sierra Impeller Kit-Westerbeke# 34440 23-3307
Sierra
$27.99Sierra Impeller Kit-Westerbeke# 34440 23-3307- Part Number:
- 47-233307
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Westerbeke #34440
- Fits:
- 4.0 BCD(60Hz) - 4.4 BCD(60Hz) - 4.4 WMD(60Hz)/3.3 WMD(50Hz) - 5.0 BCD(60Hz)/4.0 BCD(50Hz) - 5.0 BCDA(60Hz)/4.0 BCDA(50Hz) - 5.0 BCDB(60Hz)/4.0 BCDB(50Hz) - 6.0 BCD(60Hz)/4.5 BCD(50Hz) - 7.6 BTD(60Hz)/5.7 BTD(50Hz) - 7.7 WMD(60Hz)/5.8 WMD(50Hz) - 8.0
$27.99 -
Fulton Products Heavy Duty Universal Security Outboard Motor Lock with 2 Keys OML 0127 OML0127
Fulton Products
$81.99 $69.99Fulton Products Outboard Motor Lock Oml 0127 Mounts over outboard mounting clamp handles. Made of heavy gauge steel with long lasting black powder-coat finish for years of protection against rust and corrosion. Foam filler insert reduces noise and...- Part Number:
- 220-OML0127
- Availability:
- In Stock - Ships same or next business day.
- Finish:
- Black Powder Coat
$81.99 $69.99 -
Martyr Anodes 2 1/4 Zinc Shaft Anode Cmx10
Martyr Anodes
$62.39 $39.99Martyr Anodes 2 1/4 Zinc Shaft Anode Cmx10 Aluminum for salt and brackish waterMagnesium for fresh waterZinc for salt water- Part Number:
- 194-CMX10
- Availability:
- In Stock - Ships same or next business day.
- ID:
- 2-1/4"
- OD:
- 4-1/4"
- Length:
- 3-3/4"
- Material:
- Zinc
$62.39 $39.99 -
Sierra Wire Set MerCruiser 5.0L-5.7L T-Bolt 18-8821-1
Sierra
$90.19 $64.99Sierra Wire Set MerCruiser 5.0L-5.7L T-Bolt 18-8821-1Magnetic 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:
- 47-88211
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Mercruiser - 350 Mag Ski - 5.0L Alpha & Bravo Generation II - 8 cylinder - Thunderbolt ignition
$90.19 $64.99 -
Racor Replacement Element 10 Mic Ul S3204Tul
Racor
$55.09 $39.99Racor Replacement Element 10 Mic Ul S3204Tul Aquabloc® II filter replacement elements are offered as retrofits to Racor clear or metal bowl filter assemblies Long-life with 98% filtration efficiency and 100% water removal per SAE test...- Part Number:
- 62-S3204TUL
- Availability:
- In Stock - Ships same or next business day.
- Micron:
- 10
- Fits:
- 445MAM
$55.09 $39.99 -
Sierra Carb Kit-Honda Bf75-90 Pre1997 18-7052
Sierra
$64.29 $49.99Sierra Carb Kit-Honda Bf75-90 Pre1997 18-7052- Part Number:
- 47-7052
- Availability:
- In Stock - Ships same or next business day.
$64.29 $49.99 -
Sierra MerCruiser Carb Kit 18-7098-1
Sierra
$89.39 $64.99Sierra MerCruiser Carb Kit 18-7098-1- Part Number:
- 47-70981
- Availability:
- In Stock - Ships same or next business day.
- OEM #:
- Mercruiser 3302-804844002
$89.39 $64.99 -
Sierra MerCruiser Seal Kit 26-816575A3 55-83 18-2646-1
Sierra
$98.69 $78.43Sierra MerCruiser Seal Kit 26-816575A3 55-83 18-2646-1For Mercury/Mariner; MerCruiser Alpha Gen II- Part Number:
- 47-26461
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Lower Unit Seal Kit - For Alpha Gen II
- Replaces:
- 26-816575A3
$98.69 $78.43 -
Sierra Sender-Oil Press 80Psi Sgl Sta 18-5899
Sierra
$49.69 $35.99Sierra Sender-Oil Press 80Psi Sgl Sta 18-5899- Part Number:
- 47-5899
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 1/8" - 27
- Terminal:
- 10-32 Stud
- Rating:
- 80 psi/Single Station
$49.69 $35.99 -
Starbrite Star Tron Gas Additive 8 Oz 93008
Starbrite
$14.99 $11.23Starbrite Star Tron Gas Additive 8 Oz 93008 • Cures & prevents ethanol fuel problems• Makes any engine run more smoothly, start more easily• Eliminates & prevents gum, varnish and carbon deposits• Stabilizes fuel, helps...- Part Number:
- 74-93008
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 8 fl. oz.
- Treats:
- 125 gal.
$14.99 $11.23 -
GROCO 3/4" NPT Bronze Inline Fuel Valve FV-750
Groco
$50.00 $44.993/4" NPT Bronze Inline Fuel Valve Features: Selectable handle rotation Full flow Mount foot included C83600 bronze construction Stainless steel handle and hardware 400 WOG PTFE seats and seals UL listed for fuel or water- Part Number:
- 34-FV750
- Availability:
- In Stock - Ships same or next business day.
- Thread NPT:
- 3/4"
- A:
- 4.1
- B:
- 2.22
- C:
- 2.10
- D:
- 2.33
$50.00 $44.99 -
Racor Snapp Replacement Element with Drain 10M R23298-10
Racor
$45.29 $37.99Racor Snapp Replacement Element with Drain 10M R23298-10 For E10 gasoline, diesel and bio-diesel. For small engines up to 26 gph. Easily install the permanent, pivoting bracket anywhere inside or outside the engine compartment, snap in filter and quick...- Part Number:
- 62-R2329810
- Availability:
- In Stock - Ships same or next business day.
- Description:
- w/o bracket
- GPH:
- 26
- Micron:
- 10
- Ports:
- 3/8"
- Size:
- 3.8" x 7.8" H
$45.29 $37.99 -
Sierra Carb Repair Kit MerCruiser #1395-9650 18-7226
Sierra
$105.49 $69.99Sierra Carb Repair Kit MerCruiser #1395-9650 18-7226- Part Number:
- 47-7226
- Availability:
- In Stock - Ships same or next business day.
- OEM #:
- Mercruiser 1395-9650
$105.49 $69.99 -
GROCO 1/2" 4-Way Tank Selector Kit TS-350-T
Groco
$282.00 $194.991/2" 4-Way Tank Selector Kit Features: For fuel or water. Four Positions: Tank-1, Tank-2, Tanks 1 & 2, Off. Full 1/2” flow. Audible “click” at each handle position. For thru panel mounting C83600 bronze construction...- Part Number:
- 34-TS350T
- Availability:
- In Stock - Ships same or next business day.
$282.00 $194.99 -
Racor Snapp Replacement Element with Drain 2M R23298-02
Racor
$44.99 $35.99Racor Snapp Replacement Element with Drain 2M R23298-02 For E10 gasoline, diesel and bio-diesel. For small engines up to 26 gph. Easily install the permanent, pivoting bracket anywhere inside or outside the engine compartment, snap in filter and quick...- Part Number:
- 62-R2329802
- Availability:
- In Stock - Ships same or next business day.
- Description:
- w/o bracket
- GPH:
- 26
- Micron:
- 2
- Ports:
- 3/8"
- Size:
- 3.8" x 7.8" H
$44.99 $35.99 -
Seastar Back Mount Steering Rack Single Package SS141
Seastar
$268.39 $224.99Seastar Back Mount Steering Rack Single Package SS141 Great for power steered boats in which No FeedBack, systems are not required. Features the precision and comfort of 4 turns lock-to-lock with a cable and helm that installs easily from behind the dash...- Part Number:
- NW-SS141K
- Availability:
- In Stock - Ships same or next business day.
$268.39 $224.99
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.