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Fits 1999 to 2010 Dodge Ram 3500, Ram 4500, Ram 5500, and 1 more make. See every vehicle
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 degrees Fahrenheit) compared to the factory thermostat (190 degrees Fahrenheit for 99-10 and 2013 trucks and 200 degrees Fahrenheit 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 our products, this thermostat includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship.
Warranty: Lifetime Warranty
| Year | Make | Model | Submodel | Engine |
|---|---|---|---|---|
| 1999 | Dodge | Ram 3500 | Base, Custom, SLT | |
| 2000 - 2002 | Dodge | Ram 3500 | Base, Custom | |
| 2003 - 2005 | Dodge | Ram 3500 | Laramie, SLT, ST | 5.9L 359 I6 |
| 2006 | Dodge | Ram 3500 | Laramie, SLT, ST, Sport | 5.9L 359 I6 |
| 2007 | Dodge | Ram 3500 | Laramie, SLT, ST, Sport, TRX4 | |
| 2008 - 2010 | Dodge | Ram 3500 | Laramie, SLT, ST, SXT | 6.7L 408 I6 |
| 2008 | Dodge | Ram 4500 | Base, Laramie, SLT, ST | 6.7L 408 I6 |
| 2009 - 2010 | Dodge | Ram 4500 | Laramie, SLT, ST | 6.7L 408 I6 |
| 2008 | Dodge | Ram 5500 | Base, Laramie, SLT, ST | 6.7L 408 I6 |
| 2009 - 2010 | Dodge | Ram 5500 | Laramie, SLT, ST | 6.7L 408 I6 |
| 2011 | Ram | 2500 | Laramie, Laramie Longhorn, Outdoorsman, Power Wagon, SLT, SLT Sport, ST, SXT | |
| 2012 | Ram | 2500 | Hemi Sport, Laramie, Laramie Longhorn, Outdoorsman, Power Wagon, R/T, SLT, ST | |
| 2013 | Ram | 2500 | Big Horn, Hemi Sport, Laramie, Laramie Longhorn, Lone Star, Outdoorsman, Power Wagon, R/T, SLT, ST, SXT, Tradesman | |
| 2011 - 2012 | Ram | 4500 | Laramie, SLT, ST | 6.7L 408 I6 |
| 2013 | Ram | 4500 | Laramie, SLT, ST, Tradesman | 6.7L 408 I6 |
| 2011 - 2012 | Ram | 5500 | Laramie, SLT, ST | 6.7L 408 I6 |
| 2013 | Ram | 5500 | Laramie, SLT, ST, Tradesman | 6.7L 408 I6 |