OEM Activation Temp C 82°C
OEM Activation Temp F 180°F
(1) Mishimoto Thermostat
1994-1998 Dodge Ram 2500 w/ 5.9L Cummins Engine
1994-1998 Dodge Ram 3500 w/ 5.9L Cummins Engine
Mishimoto Activation Temp (Fahrenheit) 190°F
Mishimoto Activation Temp (Celsius) 87.5°C
A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 5.9L cooling system with a Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat! This thermostat is designed as a direct-fit replacement for your aged factory unit. The Mishimoto thermostat has a higher activation temperature (190°F) compared to the factory thermostat (180°F). The higher activation temperature restricts coolant flow longer to allow a quicker engine warm-up, making this thermostat ideal for use in cold climates.