Outboard Water Pump Impeller 47-22748 For Mercury 3.5HP 3.9HP 5HP 6HP 18-3012

Outboard Water Pump Impeller for Mercury

The Outboard Water Pump Impeller for Mercury is a direct replacement impeller that helps maintain proper engine cooling by circulating water; it matches OEM numbers 47-22748 and 18-3012.

Overview

This outboard water pump impeller is built for Mercury small outboards ranging from 3.5HP to 6HP. It replaces worn rubber vanes to ensure reliable cooling. A key maintenance part for keeping your Mercury running cool.

Built For Performance

• High-quality rubber compound resists heat and wear
• Precision-molded blades for consistent water flow
• Direct fit for Mercury 3.5, 3.9, 5, and 6 HP models
• Replaces OEM part numbers 47-22748 and 18-3012

Fits These Machines

• for Mercury 3.5HP
• for Mercury 3.9HP
• for Mercury 5HP
• for Mercury 6HP

On-The-Job Use

• Used in small fishing boats and dinghies
• Essential for trolling and low-speed operation
• Regular replacement prevents overheating failures

Specs At A Glance

Good To Know

Q: How do I know if the impeller is worn? A: Signs include reduced water flow from the tell-tale or higher engine temperature. Replace when vanes show cracks or distortion.

Q: Can I install this myself? A: Yes, with basic tools and a service manual. Be careful to note the rotation direction during disassembly.

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