Water Pump Impeller – Fits Yamaha 2-2.5HP & 3HP Outboard Engines (Replaces 6L5-44352-00)

Water Pump Impeller – Fits Yamaha 2-2.5HP & 3HP Outboard Engines (Replaces 6L5-44352-00)

This water pump impeller is designed for Yamaha 2-Stroke 3HP (1988–2002) and 4-Stroke 2.5HP F2.5 (2003–2022) outboard engines. It is also compatible with select Parsun 2HP, 2.5HP, and 3HP outboard engines, including Malta models.

Engineered as a direct replacement for OEM and aftermarket parts, this impeller ensures reliable cooling performance. It replaces Yamaha part numbers 6L5-44352-00-00 and 6L5-44352-01-00, Sierra 18-8911, CEF 500322, and Mallory Marine 9-45615.

• Installation: Direct OEM replacement
• Material: Durable neoprene and hardened nylon construction
• Application: Suitable for both saltwater and freshwater use

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.

Confirm your engine model/year in the table below.

Yamaha Models

Parsun Models

Technical Specifications

Package Contents

• 1 x Impeller (6L5-44352-00-00/6L5-44352-01-00)

Installation Guide

1. Safety First: Before starting, disconnect the battery and ensure the engine is turned off and in neutral.
2. Access the Lower Unit: Remove the bolts securing the lower unit (gearcase) to the engine's upper casing. Carefully separate the lower unit.
3. Locate the Water Pump: The water pump housing is typically located on top of the lower unit, surrounding the driveshaft.
4. Remove the Housing: Unscrew the bolts holding the water pump housing cover in place and lift it off.
5. Inspect and Remove Old Impeller: Take note of the old impeller's orientation. Remove it from the driveshaft, using pliers if necessary. Clean any debris from the housing.
6. Install New Impeller: Lightly lubricate the new impeller and the inside of the housing with marine grease. Slide the new impeller onto the driveshaft, rotating the shaft in its normal direction of operation to ease the blades into the housing.
7. Reassemble: Replace the housing cover, ensuring any gaskets or seals are correctly positioned. Reattach the lower unit to the engine, making sure the driveshaft and water tube align properly.
8. Test Operation: Reconnect the battery. Start the engine in a test tank or with a water supply attached to the lower unit to verify that water is successfully pumping from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my specific engine?
A: Please check the "Compatible Engine Models" table on this page. For Yamaha, you can use the provided serial number guide and parts catalog links to verify the OEM part number (6L5-44352-00-00 or 6L5-44352-01-00) against your engine's official diagram.

Q: What are the signs of a failing water pump impeller?
A: Common signs include the engine overheating, a weak or non-existent water stream from the "tell-tale" outlet, and visible cracks or damage on the impeller blades upon inspection.

Q: How often should I replace the water pump impeller?
A: As a preventative maintenance measure, it is recommended to inspect the impeller annually and replace it every 1-2 years, or more frequently if you operate in saltwater or sandy/silty conditions.

Q: OEM vs. Aftermarket?
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.