47-89981 47-65957 Outboard Impeller for Mercury 4.5/7.5/9.8HP Motors 18-3039

Outboard Impeller for Mercury

This outboard impeller replaces OEM part numbers 47-89981, 47-65957, and cross-reference 18-3039, delivering reliable water pump performance for Mercury 4.5/7.5/9.8HP outboard motors.

Overview

This outboard impeller is a direct replacement for the water pump assembly on small Mercury outboards. Designed to keep the engine cool under load, this outboard impeller ensures consistent water flow for 4.5/7.5/9.8HP motors. It is a must-have for routine maintenance to prevent overheating.

Built For Performance

• Replaces OEM part numbers 47-89981, 47-65957, and 18-3039
• Engineered for Mercury 4.5/7.5/9.8HP outboard motors
• Provides consistent water flow for cooling
• Constructed from durable rubber for long service life

Fits These Machines

• for Mercury 4.5HP outboard
• for Mercury 7.5HP outboard
• for Mercury 9.8HP outboard

On-The-Job Use

• Replacing a cracked or worn impeller during routine water pump service
• Restoring cooling performance on small fishing boats
• Ensuring reliable operation on dinghies and inflatables
• Performing preventive maintenance before long trips

Specs At A Glance

Good To Know

Q: How often should I replace the impeller? A: Typically every 1-2 seasons or 100 hours of use, depending on water conditions and engine operating hours.

Q: Does this fit my Mercury 4.5HP? A: Yes, it is designed to fit Mercury 4.5/7.5/9.8HP models, but verify your engine's serial number for exact compatibility.

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