Mercury Water Pump Impeller Repair Kit, 8HP-9.9HP BigFoot & Command Thrust FourStroke 803748K02

Mercury Water Pump Impeller Repair Kit, 8HP-9.9HP BigFoot & Command Thrust FourStroke 803748K02 is a genuine OEM service kit designed for 2005 and newer Mercury 8HP and 9.9HP FourStroke outboards equipped with a BigFoot or Command Thrust gearcase. Replacing the water pump impeller at the recommended service interval helps maintain proper cooling water flow and protect your engine from overheating.

Compatible with the following (2005 and newer w/ BigFoot or Command Thrust gearcase):

• Mercury 8HP FourStroke
• Mercury 9.9HP FourStroke

This repair kit includes the essential components needed to restore water pump performance and cooling system efficiency. Designed as a direct OEM replacement, each part is manufactured to Mercury Marine specifications for proper fit, dependable performance, and long service life.

Kit Includes:

• Water pump impeller
• Seal
• Key
• Gasket
• Wear plate
• Water guide tube

Routine water pump maintenance is essential for reliable engine cooling and long-term outboard performance. Replacing worn impeller components helps reduce the risk of overheating and costly engine repairs.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.