Water Pump Impeller Kit – Fits Yamaha F300A/F350A V8 (Replaces 6AW-44352-00-00)
Water Pump Impeller Kit – 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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Delivery and Shipping
Delivery and Shipping
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Water Pump Impeller Kit – Fits Yamaha F300A/F350A V8 (Replaces 6AW-...
Water Pump Impeller Kit – 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 Water Pump Impeller Kit – Fits Yamaha F300A/F350A V8 (Replaces 6AW-44352-00-00) provides a reliable replacement for Yamaha F300A and F350A series 4-Stroke, V8 5.3L outboard engines manufactured between 2006 and 2019. Maintaining your engine’s cooling system is critical for performance and longevity.
This component serves as a direct interchange for Yamaha 6AW-44352-00-00, Sierra CEF500389N, and JLM Marine 6AW-44352-00-00.
- Installation: Direct OEM Replacement
- Material: High-durability neoprene for reliable performance
- In the Box: One standalone water pump impeller
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket providers.
| Brand | Part Number |
|---|---|
| Yamaha | 6AW-44352-00-00 |
| Sierra | CEF500389N |
| JLM Marine | 6AW-44352-00-00 |
Engine & Model Compatibility
Confirm your engine model and year in the table below to ensure correct fitment.
This impeller is designed for a specific range of Yamaha V8 5.3L outboard engines.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F300TUR | 300 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F300TXR | 300 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | LF300TUR | 300 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | LF300TXR | 300 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350TUR | 350 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350TXR | 350 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | LF350TUR | 350 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | LF350TXR | 350 | 4-Stroke | 2007–2009 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350AET1U/X | 350 | 4-Stroke | 2010 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | FL350AET1U/X | 350 | 4-Stroke | 2010 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350UCA/XCA | 350 | 4-Stroke | 2010–2011 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | LF350UCA/XCA | 350 | 4-Stroke | 2010–2011 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350UCB/XCB | 350 | 4-Stroke | 2012–2015 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | LF350UCB/XCB | 350 | 4-Stroke | 2012–2015 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350NCB | 350 | 4-Stroke | 2014–2015 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350UCC/XCC | 350 | 4-Stroke | 2016–2019 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | LF350UCC/XCC | 350 | 4-Stroke | 2016–2019 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350NCC | 350 | 4-Stroke | 2016–2019 | 6AW-44352-00-00 | V8 5.3L |
| Yamaha | F350NCC2 | 350 | 4-Stroke | 2018–2019 | 6AW-44352-00-00 | V8 5.3L |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct OEM Replacement
- Material
- High-durability neoprene
- Color
- Black
- Dimensions
- Height: 10.5; Width: 13.0; Length: 26.5;
- Warranty
- Typically 1 year against manufacturing defects (aftermarket); OEM warranty varies
- Other Technical Attributes
- Part of Yamaha Water Pump Repair Kit 6AW-W0078-00-00
What’s in the Box
- 1 x Water Pump Impeller (6AW-44352-00-00)
Note: This listing is for the standalone impeller only. This component is also included in the complete Water Pump Repair Kit 6AW-W0078-00-00.
Installation Notes
- Ensure the engine is off and the battery is disconnected for safety.
- Place a drain pan under the lower unit and remove the drain screw to empty the gearcase oil.
- Remove the mounting bolts that secure the lower unit (gearcase) to the engine's midsection.
- Carefully lower and remove the gearcase assembly from the drive shaft housing.
- Locate and unbolt the water pump housing cover.
- Take note of the old impeller's rotational direction before removing it. Remove the old impeller and the woodruff key.
- Clean the interior of the pump housing and inspect it for scoring or wear. Replace the housing if damaged.
- Install the new woodruff key and slide the new impeller onto the driveshaft, rotating it in the correct direction to fold the vanes.
- Reinstall the water pump housing and torque its bolts to the manufacturer's specification.
- Reassemble the lower unit to the engine, ensuring the driveshaft and water tube align correctly.
- Refill the gearcase with the correct type and amount of marine gear lubricant.
- Once fully assembled, start the engine using a water supply (flushing muffs) and verify a strong, consistent stream from the water pump tell-tale outlet.
Troubleshooting & FAQ
How do I confirm this impeller fits my Yamaha engine?
The most reliable method is to check your engine's model number and year against the compatibility chart on this page. This impeller is specifically for Yamaha V8 5.3L models like the F300A and F350A from 2006–2019.
What are the signs of a failing water pump impeller?
Common symptoms include the engine overheating at idle or low speeds, a weak or intermittent stream from the "tell-tale" water outlet, or a high-temperature alarm on your console. Visible signs on the old impeller include cracked, brittle, or missing vanes.
How often should I replace my impeller?
As a preventative maintenance item, it is recommended to replace the impeller every 1 to 2 years, or every 100-200 service hours, whichever comes first. Usage in saltwater or sandy/silty conditions may require more frequent changes.
Is this the complete water pump repair kit?
No, this listing is for the standalone neoprene impeller only. The complete repair kit, which includes the housing, gaskets, O-rings, and other hardware, is sold separately under part number 6AW-W0078-00-00.
What's the difference between an OEM and an aftermarket impeller?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable high-durability neoprene materials. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected for quality and consistency.
How fast do you ship and what does it cost?
We ship worldwide quickly—typical transit is 5–15 days for most regions. Standard shipping is free for most orders, with expedited options available at checkout where applicable.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window, provided the item is unused and in its original condition. See our full 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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