Mercury Water Pump Impeller Kit 18/20/25HP Replace 18-3215 47-85089Q4 47-85089T7

Water Pump Impeller Kit for Mercury

This water pump impeller kit replaces OEM part numbers 18-3215, 47-85089Q4, and 47-85089T7 to keep Mercury outboard engines properly cooled. Designed for 18, 20, and 25 horsepower models, this water pump impeller kit includes the impeller, gaskets, and seals needed for a complete repair.

Overview

This water pump impeller kit is a direct replacement for Mercury outboard engines rated at 18, 20, and 25 horsepower. It includes the impeller, gaskets, and necessary hardware to restore cooling system flow. Designed for reliable performance, this water pump impeller kit ensures the engine runs at safe temperatures.

Built For Performance

• Made from durable, flexible rubber compound
• Precision-fit design for Mercury 18/20/25HP outboards
• Includes all necessary seals and gaskets
• Prevents overheating and cavitation
• Engineered for long service life

Fits These Machines

• for Mercury 18HP
• for Mercury 20HP
• for Mercury 25HP

On-The-Job Use

• Replacing a worn impeller in a Mercury outboard
• Maintaining cooling system efficiency during regular service
• Repairing overheating issues on small outboard motors
• Rebuilding the water pump during engine overhaul

Specs At A Glance

Good To Know

Q: How often should I replace the impeller? A: Typically every 2-3 years or every 100 hours, depending on usage.

Q: Can this kit be used on other brands? A: It is specifically designed for Mercury outboards, so always confirm compatibility.

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