DODGE 5.9L/6.7L Cummins High-Temperature Thermostat, 1999–2013 (MMTS-RAM-99H)


  • High Temperature Thermostat Direct fit for 1999–2013 Dodge Ram with 5.9L/6.7L Cummins
  • Restricts coolant system circulation for a longer time to provide a quicker warm up
  • Ideal for cool climates
  • Mishimoto Lifetime Warranty

In Stock


A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 5.9L/6.7L cooling system with a Mishimoto Dodge 5.9L/6.7L Cummins High-Temperature Thermostat! This Cummins performance thermostat is designed as a direct-fit replacement for your aged factory unit.

The Mishimoto thermostat has a higher activation temperature (205°F) compared to the factory thermostat (190°F for 99–10 and 2013 trucks & 200°F for 10-12 trucks). The higher activation temperature restricts coolant flow longer to allow a quicker engine warmup, making this Cummins performance thermostat ideal for use in cold climates. As with all their Cummins performance parts, this thermostat includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship.

Additional information

Weight 1 lbs
Dimensions 2.55 × 2.55 × 2.55 in


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