Water Pump Impeller for MERCRUISER 47-831311350 47-809866T DJ Pump 09-42-1001

Water Pump Impeller for MerCruiser

This water pump impeller for MerCruiser is a direct replacement cooling water pump component that fits MerCruiser raw-water pump assemblies and replaces OEM cross-reference numbers 47-831311350, 47-809866T, and DJ Pump 09-42-1001.

Overview

This water pump impeller for MerCruiser keeps cooling water moving through the engine's raw-water pump. It is designed for MerCruiser marine drive and inboard pump service where a worn impeller needs to be replaced. This water pump impeller renews water flow and helps maintain proper cooling during marine operation.

Built For Performance

• Replacement water pump impeller for MerCruiser raw-water pumps
• Replaces OEM part numbers 47-831311350, 47-809866T, and DJ Pump 09-42-1001
• Flexible impeller blades move water through the cooling circuit
• Common service part for marine engine cooling system maintenance
• Designed to fit the original pump housing and drive key

On-The-Job Use

• Used when servicing the MerCruiser raw-water pump
• Ideal for replacing cracked or worn impeller blades
• Supports consistent cooling water flow at idle and cruising speed
• Commonly installed during spring recommissioning or annual maintenance

Specs At A Glance

Good To Know

Q: How often should a MerCruiser water pump impeller be replaced? A: Replace it when you notice reduced cooling flow or during routine annual water pump service. Check the impeller for cracked or set blades whenever the lower unit is serviced.

Q: Will this water pump impeller for MerCruiser fit my engine? A: Confirm the engine or drive model and serial number against the listed OEM part numbers before ordering. Fit can vary by pump housing and production year.

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