Water Pump Impeller – Fits Yamaha F300A/F350A V8 (Replaces 6AW-44352-00-00)
Water Pump Impeller – Fits Yamaha F300A/F350A V8 (Replaces 6AW-44352-00-00) is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller – Fits Yamaha F300A/F350A V8 (Replaces 6AW-4435...
Water Pump Impeller – Fits Yamaha F300A/F350A V8 (Replaces 6AW-44352-00-00) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Water Pump Impeller – Fits Yamaha F300A/F350A V8 Outboards (Replaces 6AW-44352-00-00) is engineered for Yamaha F300A and F350A 5.3L V8 4-stroke outboard engines from 2006 and newer. It ensures reliable cooling performance, acting as a crucial component for maintaining optimal engine temperature.
It serves as a direct replacement for Yamaha 6AW-44352-00-00, Sierra CEF500389N, and JLM Marine 6AW-44352-00-00, offering a precise fit and function.
- Engineered for direct OEM replacement installation.
- Constructed from durable, high-quality neoprene for longevity.
- Includes one impeller as shown in the package contents.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 6AW-44352-00-00 | Primary OEM |
| Yamaha | 6AW-44352-01-00 | Superseded |
| Sierra | CEF500389N | Aftermarket Interchange |
| JLM Marine | 6AW-44352-00-00 | Aftermarket Interchange |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This impeller is designed exclusively for specific Yamaha V8 four-stroke outboard models. Please check your engine's serial number plate or documentation to ensure an exact match.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F300A | 300 | 4-Stroke | 2006+ | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350A | 350 | 4-Stroke | 2006+ | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F300TUR | 300 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 |
| Yamaha | F300TXR | 300 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 |
| Yamaha | LF300TUR | 300 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 |
| Yamaha | LF300TXR | 300 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 |
| Yamaha | F350TUR | 350 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 |
| Yamaha | F350TXR | 350 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 |
| Yamaha | LF350TUR | 350 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 |
| Yamaha | LF350TXR | 350 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 |
| Yamaha | F350UCA/XCA | 350 | 4-Stroke | 2010–2011 | 6AW-44352-00-00 | V8 |
| Yamaha | LF350UCA/XCA | 350 | 4-Stroke | 2010–2011 | 6AW-44352-00-00 | V8 |
| Yamaha | F350AET1U/X | 350 | 4-Stroke | 2010 | 6AW-44352-00-00 | V8 |
| Yamaha | FL350AET1U/X | 350 | 4-Stroke | 2010 | 6AW-44352-00-00 | V8 |
| Yamaha | F350UCB/XCB | 350 | 4-Stroke | 2012–2015 | 6AW-44352-00-00 | V8 |
| Yamaha | LF350UCB/XCB | 350 | 4-Stroke | 2012–2015 | 6AW-44352-00-00 | V8 |
| Yamaha | F350NCB | 350 | 4-Stroke | 2014–2015 | 6AW-44352-00-00 | V8 |
| Yamaha | F350UCC/XCC | 350 | 4-Stroke | 2016–2019 | 6AW-44352-00-00 | V8 |
| Yamaha | LF350UCC/XCC | 350 | 4-Stroke | 2016–2019 | 6AW-44352-00-00 | V8 |
| Yamaha | F350NCC | 350 | 4-Stroke | 2016–2019 | 6AW-44352-00-00 | V8 |
| Yamaha | F350NCC2 | 350 | 4-Stroke | 2018–2019 | 6AW-44352-00-00 | V8 |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct OEM Replacement
- Material
- Neoprene
- Color
- Black
- Interchange
- 6AW-44352-00, 6AW-44352-01-00
- Application
- Yamaha F300A/F350A V8 Outboards
- OEM Part Number
- 6AW-44352-00-00
What’s in the Box
- 1 x Impeller (Replaces 6AW-44352-00-00)
Note: This impeller is also available as part of the complete Water Pump Repair Kit (6AW-W0078-00-00), which can be purchased separately.
Installation Notes
- Disconnect the battery and remove the engine cowling.
- Place the outboard gear shift in the neutral position.
- Remove the lower unit by unbolting it from the engine's midsection. Be prepared for it to be heavy.
- Locate and unbolt the water pump housing on top of the lower unit.
- Slide the housing up to reveal the old impeller. Note the rotational direction of the existing blades.
- Remove the old impeller, key, and any gaskets or O-rings. Clean all mating surfaces thoroughly.
- Install the new key and lightly lubricate the new impeller with a marine-safe lubricant.
- Slide the new impeller onto the driveshaft while turning the shaft clockwise to seat the blades correctly.
- Reinstall the water pump housing with new gaskets and O-rings, torquing bolts to manufacturer specifications.
- Re-attach the lower unit to the engine, ensuring all linkages (shift shaft, water tube) are correctly aligned.
- With the outboard in water, start the engine and verify water is exiting the "telltale" port, indicating proper pump function.
Troubleshooting & FAQ
How do I know if my water pump impeller is failing?
Common signs of a failing impeller include a weak or non-existent water stream from the engine's tell-tale outlet, engine overheating alerts, or a noticeable decrease in cooling performance. A visual inspection may also reveal cracked, stiff, or missing blades.
How often should I replace the impeller on my Yamaha V8?
For preventative maintenance, it is highly recommended to inspect and/or replace the water pump impeller annually or every 100-200 hours of operation, whichever comes first. This interval can be shorter if you frequently operate in sandy, silty, or saltwater environments.
Is any special tool required for this installation?
Basic hand tools like a socket set, torque wrench, and screwdrivers are required. A flywheel turner can help rotate the driveshaft, and marine-safe grease is essential for lubrication. No other specialized tools are typically needed for an impeller-only replacement.
Will this fit my Yamaha F350C model?
Yes, the F350C models (like F350UCC/XCC, F350NCC) are listed as compatible. However, always double-check your engine's specific model and year against our compatibility table and verify your existing part number is 6AW-44352-00-00 to ensure a perfect fit.
What is the difference between this impeller and the official Yamaha part?
This is an aftermarket part designed to meet or exceed OEM specifications. It is made from high-quality neoprene, similar to the original, providing a cost-effective solution without compromising on fit, function, or durability.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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