Aftermarket Parts
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Sierra Sahara Voltmeter 59708P
Sierra
$61.29 $52.99Sierra Sahara Voltmeter 59708PBlack 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 through-dial lighting...- Part Number:
- 11-59708P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2"
- Type:
- Voltmeter 12 Volt
- Dial Range:
- 8-18 VDC
- Sender Code:
- N/R
$61.29 $52.99 -
Sierra Sea Water Pump MerCruiser #46-72774A32 18-3600
Sierra
$828.19 $649.99Sierra Sea Water Pump MerCruiser #46-72774A32 18-3600Replaces: Mercury #46-72774A32Fits: V8 Engines w/ith V-Belt and 2 piece pumpUse repair kit 18-3155- Part Number:
- 47-3600
- Availability:
- In Stock - Ships same or next business day.
$828.19 $649.99 -
Sold Out, please call for ETA.
Sierra Seal Kit-Injector GM Mag V8 18-7692
Sierra
$6.49 $5.95Sierra Seal Kit-Injector GM Mag V8 18-7692- Part Number:
- 47-7692
- Availability:
- In Stock - Ships same or next business day.
$6.49 $5.95 -
Sierra Seal Kit-Up Gc MerCruiser #26-32511A 1 18-2652
Sierra
$91.09 $51.58Sierra Seal Kit-Up Gc MerCruiser #26-32511A 1 18-2652Refer to Manufacturer's Application Guides for more information and complete references- Part Number:
- 47-2652
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Lower Unit Seal Kit
- Replaces:
- 26-33144A2
$91.09 $51.58 -
Sierra Seal-Trim Yamaha #64E-4384J-00-00 18-2082
Sierra
$25.39 $16.31Sierra Seal-Trim Yamaha #64E-4384J-00-00 18-2082- Part Number:
- 47-2082
- Availability:
- In Stock - Ships same or next business day.
$25.39 $16.31 -
Sierra Sender-Temp 240F 1/2-14 Sgl St Ts26631
Sierra
$27.89 $20.40Sierra Sender-Temp 240F 1/2-14 Sgl St Ts26631- Part Number:
- 11-TS26631
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 1/2" - 14
- Terminal:
- 10-32 Stud
- Temp.:
- 240 Deg - F
$27.89 $20.40 -
Sierra Sender-Temp 240F 1/4-18 Sgl St Ts26611
Sierra
$26.99 $22.99Sierra Sender-Temp 240F 1/4-18 Sgl St Ts26611- Part Number:
- 11-TS26611
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 1/4" - 18
- Terminal:
- 10-32 Stud
- Temp.:
- 240 Deg - F
$26.99 $22.99 -
Sierra Solenoid Switch OMC 18-5808
Sierra
$51.59 $34.99Sierra Solenoid Switch OMC 18-5808- Part Number:
- 47-5808
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- OMC 582708 - 395419 - Mercury 47886 - 47886T
$51.59 $34.99 -
Sierra Solenoid-Om#985064 & MerCruiser 18-5801
Sierra
$55.29 $39.99Sierra Solenoid-Om#985064 & MerCruiser 18-5801- Part Number:
- 47-5801
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Mercruiser 89-76416A-1 - Pleasurecraft R130001 - OMC 985064
$55.29 $39.99 -
Sierra Solenoid-OMC Volvo Mercid 18-5837
Sierra
$43.19 $37.99Sierra Solenoid-OMC Volvo Mercid 18-5837- Part Number:
- 47-5837
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Mercruiser 89-99253 - 89-18080 - OMC 985799 - 986620 - Delco 1114531 - Volvo 3853869 - 3853998
$43.19 $37.99 -
Sierra Starter Motor New 984456 18-5910
Sierra
$333.29 $245.66Sierra Starter Motor New 984456 18-5910Small block V6 & V8 W/ 14-1/4" flywheel & bottom mount. Offset bolt pattern; standard rotation.- Part Number:
- 47-5910
- Availability:
- In Stock - Ships same or next business day.
- Type:
- New
- Rotation:
- CW
- Application:
- Replaces: Mercruiser 50-12177A2 - 50-99418A2. OMC: 984456 - 986505
$333.29 $245.66 -
Sierra Starter-GM Ford Cw Top Rear 18-5907
Sierra
$292.49 $255.75Sierra Starter-GM Ford Cw Top Rear 18-5907Top mount rear entry starter for opposite rotation GM & Ford engine. Will also replace standard rotation (will not replace non-starter mounted solenoids). MerCruiser built 4 cylinder...- Part Number:
- 47-5907
- Availability:
- In Stock - Ships same or next business day.
- Type:
- New
- Rotation:
- CW
$292.49 $255.75 -
Sierra Sterling Tach-Hour Gas 7000Rpm 63474P
Sierra
$242.59 $164.99Sierra Sterling Tach-Hour Gas 7000Rpm 63474PBlack 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:
- 11-63474P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 3"
- Type:
- Tach/LCD Hour - Elect - W/Holdoff
- Dial Range:
- 0-7000 rpm
- Sender Code:
- O/B Alt or Coil
$242.59 $164.99 -
Sierra Thermostat Kit - Raw Water- Vp 18-3618
Sierra
$33.39 $26.33Sierra Thermostat Kit - Raw Water- Vp 18-3618- Part Number:
- 47-3618
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Raw Water Cooled: 4.3GL-B - 4.3GL-C - 4.3GL-D - 4.3GXi-C - 4.3OSi-C - 4.3GXi-D - 4.3OSi-D - 4.3GXi-E - 4.3OSi-E - 4.3GXi-F - 4.3OSi-F - 4.3GL-E - 4.3GL-G - 4.3GXi-G - 4.3OSi-G - 5.0GXi-C - 5.0GXi-D - 5.0OSi-C - 5.0OSi-D - 5.0GL-C - 5.0GL-D - 5.7GL-C
$33.39 $26.33 -
Sierra Thermostat Kit Ev-Jn V4 X-Flow 18-3673
Sierra
$63.49 $49.99Sierra Thermostat Kit Ev-Jn V4 X-Flow 18-3673- Part Number:
- 47-3673
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Kit V-4 Crossflow
$63.49 $49.99 -
Sierra Thermostat-BRP #437090 18-3545
Sierra
$32.89 $22.11Sierra Thermostat-BRP #437090 18-3545- Part Number:
- 47-3545
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 437090
- Application:
- E115 (1997) - E135 - E150 - E175 (2000-06)
$32.89 $22.11 -
Sierra Thermostat-BRP #5001036 18-3546
Sierra
$52.29 $33.06Sierra Thermostat-BRP #5001036 18-3546- Part Number:
- 47-3546
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 5001036
- Application:
- E200 - E225 - E250 (2000-05) - J200 - J225 - J250 (2000-01)
$52.29 $33.06 -
Sierra Tilt-Trim Motor-Honda & Suzuki 18-6793
Sierra
$246.79 $190.40Sierra Tilt-Trim Motor-Honda & Suzuki 18-6793- Part Number:
- 47-6793
- Availability:
- In Stock - Ships same or next business day.
$246.79 $190.40 -
Sierra Tilt-Trim Motor-Omc#5005254 18-6281
Sierra
$260.99 $204.12Sierra Tilt-Trim Motor-Omc#5005254 18-6281- Part Number:
- 47-6281
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Heavy Duty f/OMC outboards 75HP-250HP EFI (1998-Up)
- Replaces:
- J/E - 438786 - 439937 - 5005254
$260.99 $204.12 -
Sierra Transom Seal OMC#909527 18-2768
Sierra
$203.09 $155.94Sierra Transom Seal OMC#909527 18-2768- Part Number:
- 47-2768
- Availability:
- In Stock - Ships same or next business day.
- Description:
- OMC Sterndrive/Cobra - All ('78-'86)
- Replaces:
- 909527
$203.09 $155.94
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.