Welcome Aboard!

10% savings across all ranges sitewide for new customers · Terms apply

FLASHSALE26

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

Regular price $19.25

Worry-free returns

Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.


If the return is due to our error or a defective item, we’ll make it right.


Please contact us before returning any item.

Delivery and Shipping

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.


Tracking information will be provided once your order ships.

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 is a single aftermarket water pump impeller for Yamaha Outboard 4-stroke engines, listed for the Yamaha F225F, F250D and F300B models. It is designed to restore water-pump circulation and help maintain proper engine cooling during operation.

The impeller is supplied as an individual replacement component. It replaces or cross-references Yamaha 6CE-44352-00-00 and 6CE-44352-01-00. Additional reference numbers include Mercury Marine 8M6010334, Sierra Marine 18-45617-1 and 18-45617, and GLM 89300.

  • Replacement water pump impeller for Yamaha F225F, F250D and F300B outboards.
  • Suitable for the engine cooling system when the listed model and original impeller references match.
  • Sold as the impeller only, not as a complete water pump repair kit.
  • Inspect the water-pump housing, wear plate, key and seals before installation; replace worn related components as needed.

Part Number Matrix

Use these manufacturer and aftermarket references to compare the replacement impeller with your original part before ordering.

Brand Part Number Reference Type
Yamaha 6CE-44352-00-00 OEM reference
Yamaha 6CE-44352-01-00 OEM reference
Mercury Marine 8M6010334 Aftermarket reference
Sierra Marine 18-45617-1 Aftermarket reference
Sierra Marine 18-45617 Aftermarket reference
GLM 89300 Aftermarket reference

Engine Compatibility

The company fitment record for this individual impeller lists the following Yamaha 4-stroke outboard models. Confirm the model designation and original impeller number before installation.

Brand Model Rated Horsepower Stroke OEM Reference
Yamaha F225F 225 HP 4-Stroke 6CE-44352-00-00 / 6CE-44352-01-00
Yamaha F250D 250 HP 4-Stroke 6CE-44352-00-00 / 6CE-44352-01-00
Yamaha F300B 300 HP 4-Stroke 6CE-44352-00-00 / 6CE-44352-01-00

Technical Specifications

Product Type
Water pump impeller
Application
Yamaha Outboard engine cooling system
Engine Type
4-stroke outboard
Fitment
Yamaha F225F, F250D and F300B
Installation
Replacement impeller; verify the original part and pump assembly before installation
Included Quantity
1 impeller

What's in the Box

  • 1 x Water pump impeller

This listing does not include a complete water pump repair kit. Gaskets, wear plates, housing components, seals, bolts and the impeller key are not included unless specifically stated in the order details.

Installation Notes

  1. Confirm that your engine model and original impeller reference match the compatibility information above.
  2. Disconnect the battery and follow the outboard manufacturer's service procedure before beginning work.
  3. Remove the lower unit and water-pump cover according to the service manual.
  4. Remove the old impeller and inspect the pump housing, wear plate, seals and impeller key for damage or wear.
  5. Install the replacement impeller with the existing or separately sourced key correctly seated on the driveshaft.
  6. Reassemble the water-pump components using suitable gaskets and seals where required.
  7. Reinstall the lower unit and test the cooling-water flow before returning the engine to normal service.

Troubleshooting & FAQ

How do I know if the water-pump impeller needs replacement?

Possible signs include weak or absent telltale water flow, an overheating warning, reduced cooling performance or visibly damaged, cracked, brittle or missing impeller vanes. Always diagnose the complete cooling system.

Does this listing include the impeller key?

No. This listing is for one impeller only. The key and other water-pump service parts are not included.

Is this a complete water pump repair kit?

No. It is an individual replacement impeller. A complete repair kit may contain additional gaskets, seals, bolts, plates, a cup, housing components and a key.

Will this fit every Yamaha 225 HP, 250 HP or 300 HP outboard?

No. The listed fitment is limited to Yamaha F225F, F250D and F300B models. Confirm the exact model designation and original part number before ordering.

Is this an OEM Yamaha part?

No. This is an aftermarket replacement impeller intended for applications using the listed Yamaha OEM references.

Safety & Important Information

  • Verify the exact engine model, original impeller and dimensions against the listed application before purchase.
  • Do not operate an outboard with inadequate cooling-water flow or an overheating warning.
  • Follow the manufacturer's service manual and use appropriate marine-service safety procedures.
  • Professional installation is recommended if you are not experienced with outboard lower-unit or water-pump service.

About Sea Sierra

  • Marine Replacement Parts — Practical replacement components for common outboard service applications.
  • Application-Focused Selection — Product information is organized around engine models and manufacturer reference numbers.
  • Service-Ready Support — Compare your original part and engine model before ordering to help ensure the correct replacement.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.