47-85089Q4 Water Pump Impeller Kit for Mercury Mariner 18 20 25 HP Outboard Boat

Water Pump Impeller Kit for Mercury Mariner

This water pump impeller kit, OEM cross-reference 47-85089Q4 and 85089Q4, delivers reliable cooling for Mercury Mariner outboard motors from 18 to 25 horsepower, ensuring your engine runs at safe temperatures.

Overview

This water pump impeller kit is a direct replacement for Mercury Mariner outboards, featuring a precision-molded impeller and gaskets to maintain peak cooling performance. Designed for 18, 20, and 25 HP models, it prevents overheating and keeps your boat running smoothly.

Built For Performance

• Precision-molded impeller for consistent water flow
• Includes gaskets and seals for a complete installation
• Reinforced rubber construction resists wear and heat
• Exact OEM specifications ensure proper fit and function
• Tested for reliable performance in salt and freshwater

Fits These Machines

• for Mercury Mariner 18 HP outboard
• for Mercury Mariner 20 HP outboard
• for Mercury Mariner 25 HP outboard

On-The-Job Use

• Replaces worn impellers during routine water pump maintenance
• Suitable for fishing boats, skiffs, and small runabouts
• Essential for long trips to prevent engine overheating

Specs At A Glance

Good To Know

Q: How often should I replace the impeller? A: Impellers should be checked annually and replaced every 2-3 seasons or if signs of wear appear.

Q: Does this kit include all necessary hardware? A: Yes, the kit includes the impeller and associated gaskets and seals for a complete replacement.

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