Water Pump Impeller – Fits Yamaha F225F, F250D, F300B 4.2L (Replaces 6CE-44352-00-00)
Water Pump Impeller – Fits Yamaha F225F, F250D, F300B 4.2L (Replaces 6CE-44352-00-00) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Product Details
This aftermarket Water Pump Impeller – Fits Yamaha F225F, F250D, F300B 4.2L (Replaces 6CE-44352-00-00) is designed for Yamaha Outboard 4.2L V6 engines from 225 to 300 HP, covering models from 2004 to 2023. It serves as a crucial component for maintaining proper engine cooling by circulating water through the system.
It is a direct replacement for Yamaha part 6CE-44352-00-00 and also interchanges with Sierra 18-45617, 18-45617-1, and CEF 500401/CEF500401N.
- Engineered for direct-fit installation, simplifying maintenance.
- Constructed from durable rubber with a metal hub for reliable performance.
- Specifically designed for use in the 4.2L V6 Yamaha Outboard water pump assembly.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 6CE-44352-00-00 |
| Sierra | 18-45617 |
| Sierra | 18-45617-1 |
| CEF | 500401 |
| CEF | CEF500401N |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F225F | 225 | 4-Stroke | 2004–2023 | 6CE-44352-00-00 | 4.2L V6 |
| Yamaha | F250D | 250 | 4-Stroke | 2004–2023 | 6CE-44352-00-00 | 4.2L V6 |
| Yamaha | F300B | 300 | 4-Stroke | 2004–2023 | 6CE-44352-00-00 | 4.2L V6 |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct Replacement
- Housing Material
- Rubber with Metal Hub
- Other Technical Attributes
- Used in 4.2L V6 Yamaha Outboard Water Pump Assembly
What’s in the Box
- 1 x Impeller (6CE-44352-00-00)
Installation Notes
- Disconnect the battery and ensure the engine is cool before starting.
- Remove the lower unit (gearcase) from the outboard motor.
- Unbolt and remove the water pump housing cover to access the old impeller.
- Carefully remove the old impeller, noting the direction of the vanes. Pay attention to the woodruff key, which locks the impeller to the driveshaft.
- Clean the water pump housing and wear plate, inspecting for scoring or damage. Replace any worn components.
- Lightly lubricate the new impeller and the inside of the housing with marine grease or soapy water.
- Install the new impeller, ensuring the vanes are oriented correctly (typically by twisting the driveshaft in the direction of engine rotation).
- Reinstall the water pump housing, ensuring a proper seal, and reassemble the lower unit.
- Once fully assembled, start the engine and verify that a steady stream of water is exiting the "telltale" port.
Troubleshooting & FAQ
How can I confirm this impeller fits my specific Yamaha engine?
This impeller is specifically for Yamaha 4.2L V6 outboards (F225F, F250D, F300B) from 2004–2023. Always verify your OEM part number is 6CE-44352-00-00 or one of the listed aftermarket cross-references. Do not rely on HP and year alone.
What are the signs of a failing water pump impeller?
Common signs include a weak or intermittent water stream from the telltale outlet, engine overheating alerts, or a noticeable drop in water pressure on your gauges. A visual inspection may reveal cracked, brittle, or worn-down impeller vanes.
How often should I replace my outboard's impeller?
As a general maintenance rule, it is recommended to inspect and/or replace your water pump impeller every 100-200 service hours or at least once per year, whichever comes first. This interval can be shorter if you frequently operate in sandy, silty, or saltwater environments.
Is an impeller key included?
The package contains the impeller as listed. While some kits may include an impeller key, its presence is not guaranteed in this package as sources are unconfirmed. It is best practice to retain your original key if it is in good condition.
Can I install this myself?
While many boat owners perform this maintenance task themselves, it requires mechanical aptitude and the correct tools. The process involves removing the lower unit. If you are not comfortable with this procedure, professional installation is recommended.
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.
Payment & Security
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