Water Pump Impeller fit Yamaha Outboards 40 48 50 55 60 70 HP 6H3-44352 18-3069

Water Pump Impeller for Yamaha

This water pump impeller for Yamaha outboards is designed for 40 to 70 hp models, including 48, 55, and 70 hp variants. It replaces OEM part numbers 6H3-44352 and 18-3069 to ensure proper cooling flow.

Overview

The water pump impeller is the rotating heart of your Yamaha outboard's cooling system, drawing water up to keep the engine at safe temperatures. This impeller fits a range of Yamaha outboards from 40 to 70 horsepower, accepting both 6H3-44352 and 18-3069 cross references. It is a direct replacement that supports reliable engine operation.

Built For Performance

• Flexible yet sturdy rubber blades that resist deformation
• Hardened steel insert for secure shaft mounting
• Precision-balanced to minimize vibration and noise
• Works in fresh and saltwater without accelerated wear
• Exact match to OEM dimensions for seamless installation

Fits These Machines

• for Yamaha 40 hp outboard
• for Yamaha 48 hp outboard
• for Yamaha 50 hp outboard
• for Yamaha 55 hp outboard
• for Yamaha 60 hp outboard
• for Yamaha 70 hp outboard

On-The-Job Use

• Replacing a damaged impeller in a water pump rebuild kit
• Correcting overheating issues on Yamaha outboards
• Ensuring dependable cooling for inshore or offshore fishing trips
• Part of preventive maintenance before peak boating season
• Used by marinas and repair shops for quick replacements

Specs At A Glance

Good To Know

Q: How do I know this impeller fits my Yamaha? A: Check your engine's part number against 6H3-44352 or 18-3069, and verify the horsepower matches one of the listed ranges.

Q: What happens if I ignore a worn impeller? A: A failing impeller can starve the engine of cooling water, leading to overheating and potential costly damage to the powerhead.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.