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

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Our Price: $62.50

Product Code: MMTS-RAM-99L

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 Low-Temperature Thermostat! This thermostat is designed as a direct-fit replacement for your aged factory unit. The Mishimoto thermostat has a lower activation temperature (180°F) compared to the factory thermostat (190°F for 99–10 and 2013 trucks & 200°F for 10–12 trucks). The lower activation temperature allows coolant to flow through the engine earlier, which reduces and maintains lower engine temperatures. This thermostat is ideal for use in warmer climates or under extreme towing/driving conditions. As with all Mishimoto products, this thermostat includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship.
  • 180°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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