Thermostat (6.5L) Replace for HUMVEE 5743238 6685-01-444-9478

Thermostat (6.5L) Replacement for HUMVEE

This thermostat replacement is designed for HUMVEE vehicles with 6.5L engines, ensuring proper coolant flow and engine temperature regulation. It directly replaces OEM part numbers 5743238 and 6685-01-444-9478 for reliable performance.

Overview

This Thermostat (6.5L) Replace for HUMVEE is a direct-fit cooling system component that controls engine temperature by regulating coolant circulation. It is intended for military and civilian HUMVEE applications requiring a 6.5L thermostat. With exact OEM cross-reference numbers included, it provides a straightforward replacement for worn or failed thermostats.

Built For Performance

• Precision temperature control for 6.5L diesel engines
• Direct replacement for OEM part numbers 5743238 and 6685-01-444-9478
• Rugged construction to withstand high heat and pressure
• Ensures consistent engine operating temperature for efficiency

On-The-Job Use

• Maintains optimal engine temperature during prolonged idling or heavy loads
• Used in off-road and tactical environments where reliable cooling is critical
• Ensures heater performance and defrosting in cold weather operations
• Helps prevent overheating in desert or high-heat conditions

Specs At A Glance

Good To Know

Q: What is the opening temperature of this thermostat? A: The thermostat is calibrated to open at the standard factory temperature for 6.5L HUMVEE engines, typically around 195°F (90°C). Verify your vehicle's specification before installation.

Q: Is this a direct bolt-in replacement? A: Yes, it is designed as a direct replacement for OEM part numbers 5743238 and 6685-01-444-9478, with the same housing dimensions and gasket compatibility for easy installation.

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