6CE-44352-00-00 Water Pump Impeller for Yamaha F225F F250D F300B | JLM Marine

Water Pump Impeller – Fits Yamaha 4-Stroke 225–300 HP Outboard Motors (2010–2021)

This high-quality water pump impeller is engineered to fit Yamaha 4-stroke outboard engines rated at 225 HP, 250 HP, and 300 HP manufactured between 2010 and 2021. It ensures reliable cooling system performance for models including F225XCA, F225XB, F225NCB, F250NCA, F250XB, F250XCA, F300NCA, F300XA, F300XC, and more.

This impeller directly replaces Yamaha OEM part numbers 6CE-44352-00, 6CE-44352-01, 6CE-44352-03, as well as aftermarket equivalents from CEF (500401) and Sierra Marine (18-45617). Manufactured from durable neoprene, it delivers consistent water flow to protect your engine from overheating.

• Precision-molded 6-blade neoprene impeller for optimal cooling efficiency
• Direct fit for Yamaha F225, F250, and F300 four-stroke outboards
• Compatible with multiple OEM and aftermarket part numbers for broad interchangeability

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Technical Specifications

Package Contents

Your package includes:

• 1 × Water Pump Impeller (Outboard Impeller)

Installation Guide

1. Disconnect the fuel line and remove the engine cowling to access the lower unit. Ensure the engine is cool before beginning work.
2. Drain the lower unit gear oil by removing the drain and vent screws. Disconnect the water tube from the water pump housing.
3. Remove the lower unit by loosening the mounting bolts that secure it to the midsection. Carefully slide the lower unit downward and away from the driveshaft.
4. Access the water pump housing by removing the mounting bolts. Separate the housing carefully to expose the old impeller.
5. Remove the old impeller from the pump housing using pliers if necessary. Inspect the housing and pump plate for wear, corrosion, or debris.
6. Clean all surfaces thoroughly including the pump housing, pump plate, and driveshaft splines. Remove any old gasket material or residue.
7. Lubricate the new impeller blades with marine-grade grease or glycerin to ease installation and prevent damage. Do not use petroleum-based lubricants.
8. Install the new impeller onto the driveshaft, ensuring the blades rotate in the correct direction (typically clockwise when viewed from above). Align the keyway properly.
9. Reassemble the water pump housing with new gaskets, ensuring proper alignment. Torque the mounting bolts to manufacturer specifications.
10. Reinstall the lower unit onto the midsection, aligning the driveshaft and water tube carefully. Secure all mounting bolts and reconnect the water tube.
11. Refill the lower unit gear oil through the lower drain hole until it flows from the upper vent hole. Replace both drain and vent screws securely.
12. Test the cooling system by running the engine with a water supply (test tank or muffs). Verify strong water flow from the telltale (pee hole) within 15–30 seconds of starting.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Yamaha outboard?
A: Cross-reference your engine model and year with the compatibility table above. Your original impeller should match OEM part number 6CE-44352-00, 6CE-44352-01, or 6CE-44352-03. You can also verify using the Yamaha parts diagrams linked in the compatibility section.

Q: How often should I replace my water pump impeller?
A: Yamaha recommends replacing the impeller every 2–3 years or 200–300 hours of operation, whichever comes first. Replace immediately if you notice reduced water flow, overheating, or visible blade damage during routine maintenance.

Q: What are the signs of a failing water pump impeller?
A: Common symptoms include weak or no water discharge from the telltale, engine overheating alarms, steam from the engine, or rubber debris in the cooling system. Inspect the impeller immediately if any of these occur.

Q: Can I use petroleum-based grease when installing this impeller?
A: No, petroleum-based lubricants can damage neoprene and cause premature failure. Use only marine-grade water pump grease, glycerin, or a silicone-based lubricant designed for rubber impellers.

Q: Will this impeller work on Yamaha F225, F250, or F300 models from 2006 and up?
A: This impeller is specifically designed for 2010–2021 models listed in the compatibility table. Some 2006–2009 models may use different impeller designs; always verify your engine's part number before ordering.

Q: Is this an OEM Yamaha impeller or an aftermarket replacement?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.