47-85089-3 47-85089-10 18-3057 Outboard Water Pump Impeller For Mercury Marine

Outboard Water Pump Impeller for Mercury Marine

This outboard water pump impeller is a direct replacement for Mercury Marine engines, engineered to circulate coolant and prevent overheating during operation, with OEM cross-reference numbers 47-85089-3, 47-85089-10, and 18-3057.

Overview

This outboard water pump impeller is a critical component for Mercury Marine outboard motors, ensuring proper cooling water flow to the engine block. Designed as a direct replacement, it matches the performance and durability of the original impeller, making it a reliable choice for routine maintenance or emergency repair. Suitable for a wide range of Mercury Marine outboards, this impeller keeps your engine running at safe operating temperatures.

Built For Performance

• Precision-molded rubber blades for efficient water movement
• Stainless steel hub insert for secure attachment
• Thermally stable rubber compound resists heat and wear
• Direct replacement for OEM part numbers 47-85089-3, 47-85089-10, and 18-3057
• Supports continuous high-rpm operation without deformation
• Resists cracking and swelling in saltwater or freshwater

On-The-Job Use

• Replacing a worn impeller during annual outboard servicing
• Restoring cooling flow after an overheating event
• Maintaining consistent engine temperature in both saltwater and freshwater
• Used by marine technicians for routine water pump repairs
• Installing during a full engine tune-up for peace of mind

Specs At A Glance

Good To Know

Q: How often should I replace the impeller? A: It is recommended to replace the impeller every 1 to 2 seasons or after 100 hours of operation, depending on water conditions and usage.

Q: Can I install this impeller myself? A: Yes, with basic hand tools and a service manual, but ensure the housing is clean and the keyway is aligned properly to avoid damage.

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