Aftermarket Parts
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Sierra OMC Exhaust Hose 912374 18-2745
Sierra
$41.79 $37.99Sierra OMC Exhaust Hose 912374 18-2745- Part Number:
- 47-2745
- Availability:
- In Stock - Ships same or next business day.
$41.79 $37.99 -
Sierra P 854031-2 Hose Connection 18-2777
Sierra
$66.39 $51.61Sierra P 854031-2 Hose Connection 18-2777- Part Number:
- 47-2777
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Hose Conn.-2 Mounting Holes: Many older Volvo Penta models
$66.39 $51.61 -
Sierra P-582995/584477 OMC Ignition Coil 18-5181
Sierra
$41.29 $26.99Sierra P-582995/584477 OMC Ignition Coil 18-5181Please see Sierra's application guides for complete application references.- Part Number:
- 47-5181
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Coil Kit: Many Evin/John 1hp-40hp 1950-89. Replaces OEM # OMC# 582995 OMC# 584477
$41.29 $26.99 -
Sierra Plug Off Cap Om 55-1644 18-0550
Sierra
$14.29 $11.33Sierra Plug Off Cap Om 55-1644 18-0550- Part Number:
- 47-0550
- Availability:
- In Stock - Ships same or next business day.
$14.29 $11.33 -
Sierra Points Merc/Omc/Vp Mly W/Stra 18-5314
Sierra
$17.49 $15.99Sierra Points Merc/Omc/Vp Mly W/Stra 18-5314- Part Number:
- 47-5314
- Availability:
- In Stock - Ships same or next business day.
$17.49 $15.99 -
Sierra Pulley-Power Steering Pump Serp Mc-Vp 18-8297
Sierra
$105.39 $84.99Sierra Pulley-Power Str Pump Serp Mc-Vp 18-8297- Part Number:
- 47-8297
- Availability:
- In Stock - Ships same or next business day.
$105.39 $84.99 -
Sierra Pump-Eng Circ GM 3.0L Late Mod 18-3593
Sierra
$159.59 $127.39Sierra Pump-Eng Circ GM 3.0L Late Mod 18-3593- Part Number:
- 47-3593
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Late Model 3.0L 4 cylinder GM engines requiring hose fittings
- Replaces:
- Mercruiser: 884727
$159.59 $127.39 -
Sold Out, please call for ETA.
Sierra Resistor Ballast For Coil Chrysler 18-5451
Sierra
$22.89 $18.79Sierra Resistor Ballast For Coil Chrysler 18-5451- Part Number:
- 47-5451
- Availability:
- In Stock - Ships same or next business day.
$22.89 $18.79 -
Sierra Sahara Trim Mar/Mercvolvo Dp 59709P
Sierra
$56.09 $47.99Sierra Sahara Trim Mar/Mercvolvo Dp 59709PBlack graphics on a tan dial background light red at night. Very low profile bezels follow the curve of the lens to eliminate water "trapping". Pointers are black with a fire-orange tip. Perimeter and...- Part Number:
- 11-59709P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2"
- Type:
- Trim - Mariner/Merc - Volvo DP/SX - Yamaha 2001 & on
- Dial Range:
- Up-Down
- Sender Code:
- Engine Mfr. Supply
$56.09 $47.99 -
Sierra Seal 320961 18-8353
Sierra
$16.69 $13.99Sierra Seal 320961 18-8353- Part Number:
- 47-8353
- Availability:
- In Stock - Ships same or next business day.
$16.69 $13.99 -
Sierra Sender-Temp 240F 1/2-14 Dual S 18-5898
Sierra
$35.19 $24.99Sierra Sender-Temp 240F 1/2-14 Dual S 18-5898- Part Number:
- 47-5898
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 97258A1
- Thread:
- 1/2" -14 NPT
$35.19 $24.99 -
Sierra Solenoid Seadoo Brp278-001-802 18-6859
Sierra
$62.29 $49.99Sierra Solenoid Seadoo Brp278-001-802 18-6859These all NEW solenoids meet OEM specs and are 100% OEM interchangeable so no installation modifications are required. 100% copper windings for maximum magnetic pull strength. Copper contact disc for longer...- Part Number:
- 47-6859
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Solenoid
- Fits:
- Sea-Doo
- OEM #:
- 278-001-376 - 278-001-802
$62.29 $49.99 -
Sierra Solenoid-Yamaha 115-250Hp 2-St 18-5853
Sierra
$115.79 $88.76Sierra Solenoid-Yamaha 115-250Hp 2-St 18-5853For: 2-Stroke: 115hp - 150hp. (1994-Current); 175hp (1994-2000); 200hp (1994-2005); 225hp. (1995-2004); 250hp (1990-2004).- Part Number:
- 47-5853
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 61A-81941-00-00 - 6E5-81941-11-00 -6E5 - 6E5-81941-10-00 - 6E5-81941-00-00
$115.79 $88.76 -
Sierra Solenoid-Yamaha 40-90Hp 2-St 18-5879
Sierra
$92.29 $70.76Sierra Solenoid-Yamaha 40-90Hp 2-St 18-5879For: 2-Stroke: 40hp (1984-88); 50hp (1984-88); 60hp (2001-06); 70hp. (1991-Current); 90hp. (1984-91)- Part Number:
- 47-5879
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 688-81950-10-00 - 688-81941-00-00
$92.29 $70.76 -
Sierra Starter Honda 75-150Hp 2001-10 18-6959
Sierra
$337.79 $254.54Sierra Starter Honda 75-150Hp 2001-10 18-6959These all NEW (not remanufacturered) replacement starters feature a permanent magnet design for more torque and longer life. They meet OEM specs and meet or exceed OEM output for guaranteed performance. High...- Part Number:
- 47-6959
- Availability:
- In Stock - Ships same or next business day.
- Type:
- New
- Fits:
- Honda
- OEM #:
- 31200-ZY6-003 - 31200-ZY9-003 - 31200-ZY9A-0031
$337.79 $254.54 -
Sierra Starter-GM Ford Ccw Top Rear 18-5908
Sierra
$355.49 $269.99Sierra Starter-GM Ford Ccw Top Rear 18-5908- Part Number:
- 47-5908
- Availability:
- In Stock - Ships same or next business day.
- Type:
- New
- Rotation:
- CCW
- Application:
- Top mount rear entry starter. Replaces: Mercruiser 50-76965A3 - 50-808011A1. OMC 981288 - 982195 - 984982 - 986007. Crusader 42091 - Pleasurecraft RA122009
$355.49 $269.99 -
Sierra T&T Motor-Yam 4-Wire 225-250Hp 18-6782
Sierra
$334.99 $241.19Sierra T&T Motor-Yam 4-Wire 225-250Hp 18-6782- Part Number:
- 47-6782
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Yamaha - 61A-43880-01-00 - 61A-43880-02-00
$334.99 $241.19 -
Sierra Thermostat 143 Deg -BRP #435491 18-3543
Sierra
$24.09 $19.09Sierra Thermostat 143 Deg -BRP #435491 18-3543- Part Number:
- 47-3543
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 393659 -
434841
378065
508626 - 5005440 - Application:
- 143 Deg -- 40-250hp E-tech - 6-55hp - CrossV4 -V6 -
9.9 4troke(1994-01) - 15 4Stroke (1994-01)
$24.09 $19.09 -
Sold Out, please call for ETA.
Sierra Thermostat Housing Gasket 18-0398
Sierra
$2.38Sierra Thermostat Housing Gasket 18-0398- Part Number:
- 47-0398
- Availability:
- In Stock - Ships same or next business day.
$2.38 -
Sierra Trim Relay OMC 584416 18-5705
Sierra
$28.89 $21.99Sierra Trim Relay OMC 584416 18-57055 terminalSingle pullDouble throw12 volt- Part Number:
- 47-5705
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 582472 - 584416 - 586224
$28.89 $21.99
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.