46-70941A3 Mercury 4 4.5 6 7.5 9.8 HP outboard Water Pump 0.456" Impeller Kit

Water Pump Impeller Kit for Mercury

This water pump impeller kit for Mercury 4, 4.5, 6, 7.5, and 9.8 HP outboards circulates cooling water through the engine to prevent overheating. OEM cross-reference number 46-70941A3.

Overview

This water pump impeller kit for Mercury outboards replaces worn impellers to keep small outboards running cool. It is built for Mercury 4, 4.5, 6, 7.5, and 9.8 HP motors and includes the parts needed for a complete water pump service. This water pump impeller kit for Mercury is a reliable choice for routine cooling system maintenance.

Built For Performance

• Kit includes water pump impeller and sealing components
• Replaces OEM part number 46-70941A3
• Replacement fitment for Mercury 4, 4.5, 6, 7.5, and 9.8 HP outboards
• 0.456-inch impeller matched to the original design
• Built for dependable cooling in freshwater and saltwater

Fits These Machines

• for Mercury 4 HP outboard
• for Mercury 4.5 HP outboard
• for Mercury 6 HP outboard
• for Mercury 7.5 HP outboard
• for Mercury 9.8 HP outboard

On-The-Job Use

• Replacing a worn water pump impeller during routine outboard maintenance
• Restoring cooling flow on small fishing boats and dinghies
• Servicing kicker motors used for trolling
• Preventing overheating on sailboat auxiliary outboards

Specs At A Glance

Good To Know

Q: What is included in this water pump impeller kit for Mercury outboards? A: The kit includes the impeller and the sealing components needed to service the water pump. Confirm the OEM part number 46-70941A3 matches the engine before ordering.

Q: How often should an outboard water pump impeller be replaced? A: Many mechanics replace the impeller as part of annual or every-two-years cooling system service. Overheating is a sign that the impeller may be worn.

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