Engineered Marine Products 47-00004 Water Pump Impeller for Mercury Outboards Impellers - 4-9.8HP

The Engineered Marine Products 47-00004 is a high-quality aftermarket water pump impeller designed for Mercury and Mariner outboard motors in the 4 to 9.8 horsepower range. This critical cooling system component ensures proper water circulation through your outboard engine, preventing overheating and maintaining optimal operating temperatures.

Key Features:

• Premium quality construction meets or exceeds OEM specifications
• Fits Mercury/Mariner 4HP, 4.5HP, 6HP, 7.5HP, and 9.8HP 2-stroke outboards
• Compatible with engines featuring .456-inch impeller shaft diameter
• Direct replacement for hassle-free installation
• Manufactured with durable, marine-grade materials for long service life

Replaces OEM Part Numbers:

• Mercury/Mariner: 47-89981, 47-65957, 47-39074
• Sierra Marine: 18-3039
• Mallory: 9-45305

Regular impeller replacement is essential preventive maintenance for any outboard motor. Over time, impeller blades can become worn, cracked, or damaged, reducing cooling efficiency and potentially leading to engine damage. Replace your impeller annually or every 100 hours of operation to ensure reliable performance and extend the life of your outboard motor.