Water Pump 186-6178 for Onan US Military Generator MEP-802A/MEP-803A Engine

Water Pump 186-6178 for Onan

This water pump is a direct replacement for Onan US Military Generator MEP-802A/MEP-803A engines, featuring OEM cross-reference number 186-6178.

Overview

The water pump 186-6178 circulates coolant through the engine block to prevent overheating in Onan generator sets. Designed for military-grade MEP-802A and MEP-803A units, this water pump ensures reliable thermal management during extended operations. Its robust construction meets the demanding requirements of field use.

Built For Performance

• Direct replacement for Onan 186-6178 water pump
• Corrosion-resistant housing for long service life
• Precision-engineered impeller for optimal coolant flow
• High-temperature shaft seal prevents leaks
• Rugged construction meets military specifications
• Easy bolt-on installation

Fits These Machines

• for Onan US Military Generator MEP-802A
• for Onan US Military Generator MEP-803A

On-The-Job Use

• Used in military field generators for consistent power supply
• Maintains engine temperature during extended run times
• Ideal for deployment in harsh environments
• Replaces worn pumps in Onan generator overhaul kits
• Supports mission-critical operations requiring reliable cooling

Specs At A Glance

Good To Know

Q: Does this water pump include a gasket? A: The pump is sold as shown; gaskets are typically reused or purchased separately.

Q: Will this fit Onan engines outside the listed generator models? A: Compatibility may vary depending on engine serial number; we recommend checking your existing pump part number.

Slight variation in finish or dimensions may occur between production runs, and confirm compatibility before ordering.