47-89984Q5 47-89984T5 Impeller Kit for Mercury MerCruiser Alpha MR R I

Product Overview

This impeller kit provides the essential components to rebuild the water pump on Mercury MerCruiser Alpha, MR, R, and I outdrives. It ensures proper cooling by circulating raw water through the engine, preventing overheating. Designed for boat owners and marine mechanics, this kit restores peak performance to your MerCruiser cooling system.

Key Features & Performance

• Includes neoprene impeller, gaskets, seals, and key components for a complete rebuild
• Precision molded impeller blades provide reliable water flow and self-priming capability
• Corrosion-resistant materials withstand saltwater and freshwater environments
• Direct replacement for OEM part numbers 47-89984Q5 and 47-89984T5
• Ensures consistent engine operating temperature, reducing wear and fuel consumption

Fitment & Compatibility

• Mercury MerCruiser Alpha One (all generations)
• Mercury MerCruiser MR (Magnum, R, and I) drives
• Mercury MerCruiser R and I series stern drives

Common Uses

• Replacing worn or damaged water pump impellers during annual maintenance
• Rebuilding water pumps on MerCruiser Alpha, MR, R, and I outdrives
• Restoring cooling system efficiency after impeller failure or overheating events

Technical Specifications

• Part Number(s): 47-89984Q5, 47-89984T5
• Material: Neoprene impeller, rubber seals, stainless steel hardware
• Application: Marine outdrive water pump
• Kit Includes: Impeller, gaskets, seals, o-rings, key

Frequently Asked Questions

Q: How often should I replace the impeller in my MerCruiser? A: It is recommended to replace the impeller annually or every 200 hours of operation to prevent overheating and water pump failure.

Q: Is this kit compatible with a MerCruiser Alpha One Gen II? A: Yes, this kit fits all Alpha One generations including Gen I and Gen II drives, as well as MR, R, and I models.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.