New Water Pump Impeller For Mercury Mariner Mercruiser Mallory 18-3039 47-89981

Water Pump Impeller for Mercury Mariner Mercruiser Mallory

This water pump impeller for Mercury Mariner Mercruiser Mallory replaces OEM part numbers 47-89981 and 18-3039, providing reliable coolant circulation for compatible outboard and stern drive engines. It is a direct aftermarket replacement that ensures proper water flow and engine cooling.

Overview

This water pump impeller for Mercury, Mariner, Mercruiser, and Mallory applications is a high-quality replacement component that moves coolant through the engine to prevent overheating. With cross-reference numbers 47-89981 and 18-3039, this water pump impeller delivers dependable performance for a range of marine power systems.

Built For Performance

• Molded rubber vanes maintain flexibility at operating temperatures
• Corrosion-resistant hub and insert extend service life
• Exact fit for Mercury, Mariner, Mercruiser, and Mallory applications
• Matches OEM dimensions for easy installation
• Handles both raw water and closed cooling systems

Fits These Machines

• for Mercury outboards using 47-89981
• for Mariner outboards using 47-89981
• for Mercruiser stern drives using 18-3039
• for Mallory replacement parts using 18-3039

On-The-Job Use

• Replaces worn impellers during annual water pump maintenance
• Restores cooling performance on older Mercury and Mariner outboards
• Ensures proper water flow for Mercruiser stern drive engines
• Commonly used in saltwater and freshwater boating environments

Specs At A Glance

Good To Know

Q: What is the difference between OEM and aftermarket impellers? A: Aftermarket impellers like this one are manufactured to match OEM specifications, providing the same fit and performance at a lower cost. They are designed to be direct replacements for the listed part numbers.

Q: How do I know if this impeller fits my engine? A: Check your engine's original part number against 47-89981 or 18-3039. If your engine uses either of these numbers, this impeller is compatible. Always verify serial number ranges for complete confidence.

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