Description

Mercury MerCruiser / Quicksilver Impeller – 8037481

Maintain reliable engine cooling with the genuine Mercury Marine / Quicksilver 8037481 Water Pump Impeller. This OEM impeller circulates raw water through the engine’s cooling system, ensuring consistent water flow to prevent overheating and maintain optimal operating temperatures.

Designed to Mercury Marine’s original equipment specifications, the impeller uses durable neoprene rubber vanes with a molded hub, providing dependable performance in harsh marine environments.

---

Key Features

• Genuine Mercury / Quicksilver OEM water pump impeller

• Restores proper raw-water circulation through the cooling system

• Durable neoprene rubber construction with molded hub

• Helps prevent engine overheating and cooling system damage

• Direct replacement for factory-installed impeller components

---

Replaces / Cross Reference

• Mercury 47-8037481

• Mercury 8M0214945

• Tohatsu 3B2-65021-1

• Sierra 18-8920

• Mallory 9-45401

---

Compatible Mercury / Mariner Engines

Commonly used on small Mercury and Mariner outboard engines, including:

• 6 HP 2-stroke outboards

• 8 HP 2-stroke outboards

• 9.8 HP 2-stroke outboards

• 8 HP FourStroke (209cc)

• 9.9 HP FourStroke (209cc)

Some 20 HP FourStroke outboards also use this impeller depending on serial number range.

---

Service Recommendation

Water pump impellers are wear items and should typically be inspected annually and replaced every 100 hours or once per season to maintain reliable cooling system performance.

---

Important Compatibility Note

Impeller fitment varies by engine model, gearcase design, and serial number range. Always verify compatibility using the engine serial number or existing part number before ordering.