2001-2016 Duramax High Temperature Thermostats (MMTS-CHV-01DH)

Keep your Duramax running hot when it counts with the Mishimoto High-Temperature Thermostats. Designed for owners battling colder climates or trucks that struggle to hit operating temp, this thermostat holds coolant in the engine longer, letting your 6.6L warm up fast and stay in the sweet spot. Built tough, direct-fit, and backed by Mishimoto’s lifetime warranty.

Part Number: MMTS-CHV-01DH

• Direct-fit for 2001–2016 Chevrolet/GMC 6.6L Duramax
• Activates at higher temperature for faster warm-up
• Helps maintain optimal engine temps
• Ideal for cold climates
• Includes 185 °F and 191 °F thermostats
• Mishimoto Lifetime Warranty

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  What degree are they

  185 and 191 degree Fahrenheit.