Water Pump Impeller 47-42038 for Mercury/Mariner (6-15hp) Outboard 18-3062 89451

Water Pump Impeller for Mercury/Mariner

This water pump impeller fits Mercury/Mariner outboards from 6 to 15 horsepower, replacing OEM part numbers 47-42038, 18-3062, and 89451.

Overview

The water pump impeller is a critical component that moves coolant through your outboard's cooling system, preventing overheating during operation. This aftermarket replacement is designed for Mercury/Mariner engines in the 6-15hp range, offering a direct fit and dependable performance. Whether you are performing routine maintenance or a repair, this water pump impeller delivers the flow needed to keep your engine running smoothly.

Built For Performance

• Precision-molded rubber for a snug fit in the pump housing
• Corrosion-resistant construction for saltwater and freshwater use
• Meets OEM dimensional specifications for reliable sealing
• Handles high operating temperatures without warping
• Easy installation with standard tools

On-The-Job Use

• Replacing a worn impeller in a Mercury/Mariner 6-15hp outboard
• Restoring proper cooling water flow during water pump service
• Preventing engine overheating on fishing boats and small runabouts
• Routine maintenance for seasonal outboard preparation

Specs At A Glance

Good To Know

Q: How often should I replace the water pump impeller? A: Typically every 100-200 hours of operation or annually, depending on usage and water conditions.

Q: Will this impeller fit my specific Mercury/Mariner model? A: It fits 6-15hp Mercury/Mariner outboards using OEM part numbers 47-42038, 18-3062, or 89451. Confirm 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.