Aftermarket Parts
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Sierra Sender-Oil Press 80Psi Sgl Sta 18-5899
Sierra
$51.69 $35.39Sierra 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
$51.69 $35.39 -
Sold Out, please call for ETA.
GROCO 1/2" 4-Way Tank Selector Kit TS-350-T
Groco
$267.00 $174.321/2" 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.
$267.00 $174.32 -
Sold Out, please call for ETA.
GROCO 3/4" NPT Bronze Inline Fuel Valve FV-750
Groco
$50.00 $31.463/4" 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 $31.46 -
Seastar Control Cable OMC/Volvo TFXtreme CCX214
Seastar
$100.09 $75.22Seastar Control Cable OMC/Volvo TFXtreme CCX214 Stainless steel and brass fittings. Fits Volvo engines w/BRP/OMC top mount controls and OMC Turbo Jet gates w/OMC side mount controls that accept OMC "snap in" type cable. Xtreme cables feature a...- Part Number:
- NW-1CCX214
- Availability:
- In Stock - Ships same or next business day.
$100.09 $75.22 -
Sierra Condenser F12181-1 18-5241
Sierra
$19.29 $15.68Sierra Condenser F12181-1 18-5241- Part Number:
- 47-5241
- Availability:
- In Stock - Ships same or next business day.
$19.29 $15.68 -
Sold Out, please call for ETA.
SeaStar HK4200A-3 BayStar Compact Hydraulic Steering System Complete Kit 20ft Hoses
Seastar
$1,098.89 $988.99SeaStar HK4200A-3 BayStar Compact Hydraulic Steering System Complete Kit 20ft Hoses Application: BayStar is for single-outboard powered boats rated up to 150 HP, including runabouts and inflatables and outboard engines with ABYC standard engine tilt...- Part Number:
- 1-HK4200A3
- Availability:
- In Stock - Ships same or next business day.
- Includes:
- HH43143 Std Helm & Hoses
$1,098.89 $988.99 -
Sierra Fuel Line 25" 18-8115
Sierra
$94.39 $65.93Sierra Fuel Line 18-8115- Part Number:
- 47-8115
- Availability:
- In Stock - Ships same or next business day.
$94.39 $65.93 -
Sierra Nut 11-22339 18-3713
Sierra
$7.59 $6.25Sierra Nut 11-22339 18-3713- Part Number:
- 47-3713
- Availability:
- In Stock - Ships same or next business day.
- OEM #:
- 11-22339 - 11-97522 - 11-36084 - F1348 - F1881
$7.59 $6.25 -
Sierra U-Joint OMC#915716 Vp#897707-6 18-2104
Sierra
$84.49 $51.49Sierra U-Joint OMC#915716 Vp#897707-6 18-2104Heavy duty U-Joint with straight and 90° fittings for OMC; Volvo and others.- Part Number:
- 47-2104
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- OMC 915716 - 912214 - Mercury 75832T - 75832A2 - Volvo 853255 - 897707
$84.49 $51.49 -
Centek Reducer Coupling-4" To 3" 1200170
Centek
$97.49 $73.50Centek Reducer Coupling-4" To 3" 1200170 These fittings are made of the same fiberglass and fire retardant resins used to make Vernatube. Fittings, couplings and elbows are lightweight, strong, non-corroding and durable.- Part Number:
- 383-1200170
- Availability:
- In Stock - Ships same or next business day.
- OD:
- 3" to 4"
- Length:
- 10"
$97.49 $73.50 -
Sierra Engine Circ Pump-GM V6 & Sb V8 18-3599-1 18-3599-2
Sierra
$231.09 $145.29Sierra Engine Circ Pump-GM V6 & Sb V8 18-3599-1- Part Number:
- 47-35992
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Late model GM V6 & V8 engine using composite timing cover
- Replaces:
- Mercury 811841/ 850399/8503991 -
Volvo 3853850
$231.09 $145.29 -
Sierra Gasket Set-O/D MerCruiser # 16755Q 1 18-2615
Sierra
$12.29 $7.94Sierra Gasket Set-O/D MerCruiser # 16755Q 1 18-2615- Part Number:
- 47-2615
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- All Bravo
- Replaces:
- 16755A1 - 16755Q1 - 16755T1
$12.29 $7.94 -
Sierra MerCruiser Alpha Bravo Tilt Trim Motor Pump replaces 17649 891736 18-6772
Sierra
$280.19 $231.18New MerCruiser Tilt Pump Motor Replacement by Sierra Replacement tilt and trim pump motor for MerCruiser inboard/outboards and Mercury 225 - 275 hp outboards using an oildyne pump. Replaces: 17649, 17649T, 891736T For late style Alpha I,...- Part Number:
- 47-6772
- Availability:
- In Stock - Ships same or next business day.
$280.19 $231.18 -
Martyr Anodes Aluminum Divers Dream 1/2" x 6" x 12 Cmdivera
Martyr Anodes
$58.89 $44.94Martyr Anodes Aluminum Divers Dream 1/2" x 6" x 12 Cmdivera- Part Number:
- 194-CMDIVERA
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 12" x 6" x 1/2"
- Hole:
- 1/2" x 2" 9"
- Material:
- Aluminum
$58.89 $44.94 -
Martyr Anodes Grouper Magnesium Cmgrouperm
Martyr Anodes
$123.39 $71.72Martyr Anodes Grouper Magnesium Cmgrouperm 15' of cableDo Not connect to batteryZinc for saltwaterMagnesium for use in fresh waterAluminum for salt and brackish water- Part Number:
- 194-CMGROUPERM
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 8-1/4" x 3-1/4" x 1-3/8"
- Material:
- Magnesium
$123.39 $71.72 -
NGK Spark Plugs 4495 Spark Plug 4495
NGK Spark Plugs
$20.09 $10.81NGK Spark Plugs 4495 Spark Plug 4495 Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life. • Triple gasket sealing...- Part Number:
- 41-BPZ8HN10
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4495
- Pkg.:
- Boxed
$20.09 $10.81 -
Seastar Bleed Nipple Caps @12 Hp6044
Seastar
$39.59 $31.02Seastar Bleed Nipple Caps @12 Hp6044- Part Number:
- 1-HP6044
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Bleed Nipple Soft cap
- Description:
- Bleed nipple caps for all Seastar Cylinders
- Bag:
- 12
$39.59 $31.02 -
Sierra Drain Plug No Mag Honda-MerCruiser 18-2244
Sierra
$5.49 $4.84Sierra Drain Plug No Mag Honda-MerCruiser 18-2244- Part Number:
- 47-2244
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- Mercury/Mercruiser #1/MR/R/Alpha/Alpha I Gen II upper & lower units. OEM #10-79953A2 - Q2
- Drain Screw:
- Drain Screw
$5.49 $4.84 -
Sierra Fuel Sender Gasket 64082
Sierra
$9.79 $7.34Sierra Fuel Sender Gasket 64082- Part Number:
- 11-64082
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Replacement Gasket
$9.79 $7.34 -
Attwood Marine Repl Cover&Retainer F/1670 Black 911526-1
Attwood Marine
$13.94 $6.65Attwood Marine Repl Cover&Retainer F/1670 Black 911526-1- Part Number:
- 23-9115261
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Replacement Cover f/1670 - Black
$13.94 $6.65
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.