Mishimoto high-temperature racing thermostat set for the 2001-2010 Chevrolet/GMC 6.6L Duramax diesel. Opening at 185°F and 191°F (higher than stock), it lets engine temperatures rise for a quicker warm-up — ideal for colder climates. Direct-fit replacement, backed by the Mishimoto Lifetime Warranty.
| Type | High-temperature racing thermostat set |
| Activation Temp | 185°F & 191°F |
| Engine | GM 6.6L Duramax diesel |
| Warranty | Lifetime |
| Application | 2001-2010 Chevy/GMC 6.6L Duramax (see fitment) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006-2016 | Chevrolet | Express 2500 | Base |
| 2006-2016 | Chevrolet | Express 3500 | Base |
| 2001-2005 | Chevrolet | Silverado 2500 HD | Base |
| 2001-2026 | Chevrolet | Silverado 2500 HD | LT |
| 2007-2026 | Chevrolet | Silverado 2500 HD | LTZ |
| 2004-2026 | Chevrolet | Silverado 2500 HD | WT |
| 2001-2005 | Chevrolet | Silverado 3500 | Base |
| 2007-2026 | Chevrolet | Silverado 3500 HD | LT |
| 2006-2016 | GMC | Savana 2500 | Base |
| 2006-2016 | GMC | Savana 3500 | Base |
| 2002-2005,2015-2021 | GMC | Sierra 2500 HD | Base |
| 2011-2026 | GMC | Sierra 2500 HD | Denali |
| 2001-2026 | GMC | Sierra 2500 HD | SLE |
| 2001-2026 | GMC | Sierra 2500 HD | SLT |
| 2002-2005 | GMC | Sierra 3500 | Base |
| 2007-2026 | GMC | Sierra 3500 HD | SLE |
| 2007-2026 | GMC | Sierra 3500 HD | SLT |
