Water Pump Impeller Kit for Mercury Outboard 9.9 10 15 20 HP 8M0135821 8M0134484

Water Pump Impeller Kit for Mercury

This water pump impeller kit for Mercury outboard engines replaces OEM cross-references 8M0135821 and 8M0134484 and ensures proper cooling flow for 9.9 to 20 HP models.

Overview

The water pump impeller kit for Mercury outboard engines is a complete replacement set for models rated 9.9, 10, 15, and 20 horsepower. This water pump impeller kit includes the impeller, gaskets, and seals to restore cooling system efficiency. Designed for the water pump impeller kit application, it keeps your outboard running at safe temperatures.

Built For Performance

• Precision-molded rubber impeller for consistent water flow
• Includes all required gaskets and O-rings for a full rebuild
• Fits Mercury outboard models from 9.9 to 20 HP
• OEM cross-references 8M0135821 and 8M0134484 ensure accurate fit
• Durable compound resists heat and wear

Fits These Machines

• for Mercury 9.9 HP outboard
• for Mercury 10 HP outboard
• for Mercury 15 HP outboard
• for Mercury 20 HP outboard

On-The-Job Use

• Replacing worn impellers during routine maintenance
• Preventing overheating in saltwater or freshwater
• Restoring cooling flow after impeller failure
• Used on fishing boats, skiffs, and runabouts

Specs At A Glance

Good To Know

Q: How often should I replace the impeller? A: Typically every 100 hours or annually, depending on usage.

Q: Does this kit include the wear plate? A: No, this kit includes the impeller and gaskets but not the wear plate or housing.

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