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FLASHSALE26

Water Pump Impeller for Yamaha F225F, F250D and F300B 4-Stroke Outboards – Replaces 6CE-44352-00-00 and 6CE-44352-01-00

Regular price $19.25

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Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


International delivery times may vary due to customs processing.


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If you have any questions, feel free to email us at info@seasierra.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket water pump impeller is a replacement cooling-system component for specified Yamaha 4-stroke outboard engines. The impeller circulates cooling water through the water pump to help maintain proper engine operating temperature.

It is listed for Yamaha F225F, F250D and F300B outboards and replaces Yamaha OEM part numbers 6CE-44352-00-00 and 6CE-44352-01-00.

  • Single replacement water pump impeller.
  • For specified Yamaha 4-stroke outboard applications.
  • Aftermarket replacement for the water pump impeller, not a complete water pump assembly or repair kit.
  • Designed to restore water-pump service when the original impeller is worn, cracked, deformed or damaged.

Part Number Matrix

Use the following references to compare the replacement impeller with your original part and engine documentation.

Brand or Source Part Number Reference Type
Yamaha 6CE-44352-00-00 OEM replacement reference
Yamaha 6CE-44352-01-00 OEM replacement reference
Sierra Marine 18-45617-1 Aftermarket cross-reference
Sierra Marine 18-45617 Aftermarket cross-reference
GLM 89300 Aftermarket cross-reference

Engine & Model Compatibility

Compatibility is based on the specific engine model designations listed below. Confirm the complete model designation and compare the original impeller before ordering; horsepower alone is not sufficient for fitment.

Brand Model Rated HP Stroke OEM Reference Fitment Note
Yamaha F225F 225 4-Stroke 6CE-44352-00-00; 6CE-44352-01-00 Confirm the complete engine model designation.
Yamaha F250D 250 4-Stroke 6CE-44352-00-00; 6CE-44352-01-00 Confirm the complete engine model designation.
Yamaha F300B 300 4-Stroke 6CE-44352-00-00; 6CE-44352-01-00 Confirm the complete engine model designation.

Technical Specs

Product Type
Water pump impeller
Product Configuration
Single impeller
Application
Yamaha 4-stroke outboard cooling systems
Compatible Models
Yamaha F225F, F250D and F300B
OEM Replacement References
6CE-44352-00-00 and 6CE-44352-01-00
Aftermarket Cross-References
Sierra Marine 18-45617-1, Sierra Marine 18-45617 and GLM 89300

What’s in the Box

  • 1 x aftermarket water pump impeller

Note: This listing is for the impeller only. A key, gasket, wear plate, pump cup, housing and other water-pump components are not included unless specifically stated in the package contents.

Installation Notes

  1. Disconnect the battery and make sure the engine is cool before beginning service.
  2. Remove the lower unit according to the engine service manual.
  3. Remove the water pump cover and carefully take out the old impeller.
  4. Clean debris from the pump housing and inspect the housing, wear plate, key and gaskets for wear or damage.
  5. Install the replacement impeller with the drive key correctly seated. Align the impeller with the key and rotate the driveshaft in the normal direction of operation while seating the vanes.
  6. Reassemble the water pump using serviceable gaskets and seals, then reinstall the lower unit.
  7. Run the engine in an appropriate water supply and confirm a strong tell-tale stream and normal cooling-system operation before returning the boat to service.

Installation requires lower-unit removal and should be performed by a qualified technician or by a person following the correct Yamaha service documentation.

Troubleshooting & FAQ

Which Yamaha engines use this impeller?

This listing is for specified Yamaha 4-stroke F225F, F250D and F300B outboards. Confirm the complete model designation and compare the OEM reference with your original part before ordering.

What are common signs of a worn impeller?

Possible signs include a weak or missing tell-tale stream, overheating warnings, elevated operating temperature or visible damage to the old impeller. A blocked cooling passage or another water-pump problem can cause similar symptoms, so inspect the complete cooling system during service.

Does this listing include a water-pump repair kit?

No. This product is a single replacement impeller. It does not include a pump housing, cover, key, gasket, wear plate, cup or other repair-kit components.

Is the impeller an OEM Yamaha part?

No. This is an aftermarket replacement impeller. Yamaha OEM part numbers are shown only as fitment and reference information.

Does the impeller key come with the product?

No key is listed in the package contents. Check the existing key and replace it separately if it is worn, damaged or missing.

How often should the impeller be replaced?

Replacement intervals depend on operating hours, water conditions and the manufacturer's maintenance schedule. Inspect the impeller during scheduled water-pump service and replace it if the vanes are worn, cracked, hardened, deformed or damaged.

Safety & Important Information

  • Verify the complete Yamaha model designation and OEM reference before purchase.
  • Do not rely on horsepower alone to confirm compatibility.
  • This product is an aftermarket replacement, not an OEM Yamaha component.
  • Disconnect the battery before service and follow the applicable engine service manual.
  • Do not operate the engine without an adequate water supply for cooling.

About Sea Sierra

  • Marine Replacement Parts — Practical aftermarket components for routine outboard maintenance and repair.
  • Application-Focused Listings — Product references and model information are provided to support careful part comparison.
  • Service-Ready Support — Confirm your engine model and original part before installation for the best fit.

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