Water Pump Kit For Mercury Mariner 4/4.5/7.5/9.8 HP - 47-89981Q1

Water Pump Kit for Mercury Mariner

This water pump kit for Mercury Mariner outboard engines (4, 4.5, 7.5, 9.8 HP) includes an impeller, housing, gaskets, and seals to replace worn cooling system components. It corresponds to OEM part number 47-89981Q.

Overview

The water pump kit is a complete replacement set for the cooling system of Mercury Mariner outboards in the 4 to 9.8 horsepower range. It contains all necessary parts to restore proper water flow and prevent overheating. This kit (OEM 47-89981Q) is ideal for maintenance or repair of small outboard engines.

Built For Performance

• Includes impeller, housing, gaskets, and seals
• Neoprene impeller blades provide efficient water pumping
• Stainless steel inserts resist corrosion
• Precision-molded housing ensures proper fit
• Direct replacement for Mercury Mariner 4-9.8 HP models

On-The-Job Use

• Annual water pump replacement on small outboards
• Rebuilding cooling systems after impeller wear or damage
• Used by marine technicians and DIY boat owners
• Essential for preventing engine overheating in salt or fresh water

Specs At A Glance

Good To Know

Q: How often should I replace the water pump impeller? A: It is recommended to replace the impeller every 1-2 years or 100 hours of operation, depending on usage and water conditions.

Q: What are signs of a failing water pump? A: Indicators include low or no water stream from the tell-tale, engine overheating, or unusual noises from the lower unit.

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