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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 Cummins performance 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 warmup, making this Cummins performance thermostat ideal for use in cold climates. As with all our Cummins performance parts, this thermostat includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship.
Features:
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California Residents: Prop 65 WARNING |
| Year range | Make | Model | Sub Model | Engine Type | Liter | Body | Fuel | Aspiration | Drivetrain |
| 1999-2002 | Dodge | Ram 2500 | Base | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 1999-2002 | Dodge | Ram 2500 | Base | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 1999-2002 | Dodge | Ram 2500 | Base | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 1999-2002 | Dodge | Ram 2500 | Base | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 1999-2002 | Dodge | Ram 2500 | Base | V8 | 5.9L | Cab & Chassis | GAS | Naturally Aspirated | 4WD |
| 1999-2002 | Dodge | Ram 2500 | Base | V8 | 5.9L | Cab & Chassis | GAS | Naturally Aspirated | RWD |
| 1999-2002 | Dodge | Ram 2500 | Base | V8 | 5.9L | GAS | Naturally Aspirated | 4WD | |
| 1999-2002 | Dodge | Ram 2500 | Base | V8 | 5.9L | GAS | Naturally Aspirated | RWD | |
| 1999-2002 | Dodge | Ram 3500 | Base | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 1999-2002 | Dodge | Ram 3500 | Base | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 1999-2002 | Dodge | Ram 3500 | Base | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 1999-2002 | Dodge | Ram 3500 | Base | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 1999-2002 | Dodge | Ram 3500 | Base | V8 | 5.9L | Cab & Chassis | GAS | Naturally Aspirated | 4WD |
| 1999-2002 | Dodge | Ram 3500 | Base | V8 | 5.9L | Cab & Chassis | GAS | Naturally Aspirated | RWD |
| 1999-2002 | Dodge | Ram 3500 | Base | V8 | 5.9L | GAS | Naturally Aspirated | 4WD | |
| 1999-2002 | Dodge | Ram 3500 | Base | V8 | 5.9L | GAS | Naturally Aspirated | RWD | |
| 2003-2003 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2003-2003 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2003-2003 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2003-2003 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2003-2004 | Dodge | Ram 2500 | SLT | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2003-2004 | Dodge | Ram 2500 | SLT | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2003-2004 | Dodge | Ram 2500 | SLT | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2003-2004 | Dodge | Ram 2500 | SLT | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2003-2004 | Dodge | Ram 2500 | ST | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2003-2004 | Dodge | Ram 2500 | ST | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2003-2004 | Dodge | Ram 2500 | ST | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2003-2004 | Dodge | Ram 2500 | ST | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2003-2006 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2003-2006 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2003-2006 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2003-2006 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2003-2007 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2003-2007 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2003-2007 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2003-2007 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2003-2007 | Dodge | Ram 3500 | SLT | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2003-2007 | Dodge | Ram 3500 | SLT | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2003-2007 | Dodge | Ram 3500 | SLT | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2003-2007 | Dodge | Ram 3500 | SLT | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2003-2007 | Dodge | Ram 3500 | ST | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2003-2007 | Dodge | Ram 3500 | ST | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2003-2007 | Dodge | Ram 3500 | ST | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2003-2007 | Dodge | Ram 3500 | ST | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2005-2005 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2005-2005 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2005-2006 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2005-2006 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2005-2007 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2005-2007 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2006-2006 | Dodge | Ram 3500 | Sport | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2006-2006 | Dodge | Ram 3500 | Sport | L6 | 5.9L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2006-2007 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2006-2007 | Dodge | Ram 2500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2006-2007 | Dodge | Ram 2500 | SLT | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2006-2007 | Dodge | Ram 2500 | SLT | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2006-2007 | Dodge | Ram 2500 | Sport | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2006-2007 | Dodge | Ram 2500 | Sport | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2006-2007 | Dodge | Ram 2500 | ST | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2006-2007 | Dodge | Ram 2500 | ST | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2006-2007 | Dodge | Ram 2500 | TRX4 | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2006-2007 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2006-2007 | Dodge | Ram 3500 | Laramie | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2006-2007 | Dodge | Ram 3500 | SLT | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2006-2007 | Dodge | Ram 3500 | SLT | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2006-2007 | Dodge | Ram 3500 | Sport | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2006-2007 | Dodge | Ram 3500 | Sport | L6 | 5.9L | DIESEL | Turbocharged | RWD | |
| 2007-2007 | Dodge | Ram 3500 | TRX4 | L6 | 5.9L | DIESEL | Turbocharged | 4WD | |
| 2008-2009 | Dodge | Ram 3500 | Laramie | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2008-2009 | Dodge | Ram 3500 | Laramie | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2008-2009 | Dodge | Ram 3500 | SXT | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2008-2009 | Dodge | Ram 3500 | SXT | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2008-2010 | Dodge | Ram 2500 | SXT | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2008-2010 | Dodge | Ram 2500 | SXT | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2008-2012 | Dodge | Ram 3500 | ST | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2008-2012 | Dodge | Ram 3500 | ST | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2008-2013 | Dodge | Ram 2500 | Laramie | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2008-2013 | Dodge | Ram 2500 | Laramie | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2008-2013 | Dodge | Ram 2500 | SLT | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2008-2013 | Dodge | Ram 2500 | SLT | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2008-2013 | Dodge | Ram 2500 | ST | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2008-2013 | Dodge | Ram 2500 | ST | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2008-2013 | Dodge | Ram 3500 | Laramie | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2008-2013 | Dodge | Ram 3500 | Laramie | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2008-2013 | Dodge | Ram 3500 | SLT | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2008-2013 | Dodge | Ram 3500 | SLT | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2008-2013 | Dodge | Ram 3500 | SLT | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2008-2013 | Dodge | Ram 3500 | SLT | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2008-2013 | Dodge | Ram 3500 | ST | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2008-2013 | Dodge | Ram 3500 | ST | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2010-2010 | Dodge | Ram 2500 | TRX | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2010-2010 | Dodge | Ram 2500 | TRX | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2011-2013 | Dodge | Ram 2500 | Laramie Longhorn | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2011-2013 | Dodge | Ram 2500 | Laramie Longhorn | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2011-2013 | Dodge | Ram 3500 | Laramie Longhorn | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2011-2013 | Dodge | Ram 3500 | Laramie Longhorn | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2011-2013 | Dodge | Ram 3500 | Laramie | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2011-2013 | Dodge | Ram 3500 | Laramie | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2012-2012 | Dodge | Ram 2500 | Outdoorsman | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2012-2012 | Dodge | Ram 2500 | Outdoorsman | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2012-2013 | Dodge | Ram 2500 | Outdoorsman | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2013-2013 | Dodge | Ram 2500 | Big Horn | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2013-2013 | Dodge | Ram 2500 | Big Horn | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2013-2013 | Dodge | Ram 2500 | Lone Star | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2013-2013 | Dodge | Ram 2500 | Lone Star | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2013-2013 | Dodge | Ram 2500 | Tradesman | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2013-2013 | Dodge | Ram 2500 | Tradesman | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2013-2013 | Dodge | Ram 3500 | Big Horn | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2013-2013 | Dodge | Ram 3500 | Big Horn | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2013-2013 | Dodge | Ram 3500 | Lone Star | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2013-2013 | Dodge | Ram 3500 | Lone Star | L6 | 6.7L | DIESEL | Turbocharged | RWD | |
| 2013-2013 | Dodge | Ram 3500 | Tradesman | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | 4WD |
| 2013-2013 | Dodge | Ram 3500 | Tradesman | L6 | 6.7L | Cab & Chassis | DIESEL | Turbocharged | RWD |
| 2013-2013 | Dodge | Ram 3500 | Tradesman | L6 | 6.7L | DIESEL | Turbocharged | 4WD | |
| 2013-2013 | Dodge | Ram 3500 | Tradesman | L6 | 6.7L | DIESEL | Turbocharged | RWD |
| Off-Road: | No |
| Mishimoto Activation Temp (Celsius): | 96°C |
| Mishimoto Activation Temp (Fahrenheit): | 205°F |
| OEM Activation Temp C: | 87.5°C |
| OEM Activation Temp F: | 190°F |