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Mishimoto Dodge Cummins High-Temperature Thermostat
Mishimoto High-Temperature Thermostat 99-13 Dodge 5.9L/6.7L Cummins

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Our Price: $62.50

Product Code: MMTS-RAM-99H

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 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 warm-up, making this thermostat ideal for use in cold climates. As with all Mishimoto products, this thermostat includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship.
  • 205°F (96°C)

  • FACTORY ACTIVATION TEMP. 190°F (87.5°C) [99–09 & 13 trucks] 200°F (93°C) [10–12 trucks]


  • 99–07 Dodge Ram 2500 w/ 5.9L Cummins Engine

  • 99–07 Dodge Ram 3500 w/ 5.9L Cummins Engine

  • 07.5–13 Dodge Ram 2500 w/ 6.7L Cummins Engine

  • 07.5–13 Dodge Ram 3500 w/ 6.7L Cummins Engine


  • Mishimoto Thermostat
    (1) O-ring
  • Mishimoto
    Lifetime Warranty

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