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

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SKU: MISMMTS-RAM-99L
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Mishimoto Low-Temperature Thermostat for 1999-2013 Dodge/Ram 5.9L & 6.7L Cummins

Ensure your 1999-2013 Dodge or Ram 5.9L/6.7L Cummins operates at optimal temperatures with the Mishimoto Low-Temperature Thermostat. Designed for enthusiasts who push their trucks to the limit, this thermostat opens earlier than the stock unit, promoting enhanced coolant circulation and significantly reducing high engine temperatures. This is crucial for preventing overheating during heavy towing, hauling, or high-performance driving, thereby safeguarding your powerful Cummins engine.

Why Choose the Mishimoto Low-Temperature Thermostat?

  • Superior Cooling Efficiency: Opens at a lower temperature to allow coolant to flow through the engine sooner, reducing overall heat.
  • Engine Protection: Minimizes the risk of heat-related damage and ensures consistent performance under demanding conditions.
  • Robust Construction: Built to withstand the extreme temperatures and pressures found in Cummins diesel engines.
  • Direct Fit Application: Engineered for a precise fit, ensuring easy installation on your 1999-2013 Dodge/Ram 5.9L or 6.7L Cummins.
  • Improved Reliability: Helps maintain stable engine temperatures, contributing to the longevity and dependable performance of your truck.

The 5.9L and 6.7L Cummins engines are legendary for their power and capability. To unlock their full potential and ensure their longevity, an effective cooling system is paramount. The Mishimoto Low-Temperature Thermostat is a critical upgrade that actively manages engine heat, preventing the detrimental effects of prolonged high temperatures. Whether you're towing a heavy trailer, navigating challenging work sites, or simply seeking peace of mind on the road, this thermostat provides an added layer of protection. It ensures your engine runs cooler, performs better, and lasts longer, making it an essential modification for any serious Cummins owner.

Upgrade your Dodge or Ram Cummins with a thermostat designed for superior cooling and reliability. Get your Mishimoto Low-Temperature Thermostat today at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1999-2001 Dodge Ram 1500 Laramie
1999-2001 Dodge Ram 1500 Sport
1999-2003 Dodge Ram 1500 ST
2002-2003 Dodge Ram 1500 SLT
2003 Dodge Ram 1500 Laramie
1999-2002 Dodge Ram 2500 Base
2003 Dodge Ram 2500 Laramie
2003-2010 Dodge Ram 2500 SLT
2003-2010 Dodge Ram 2500 ST
2005-2010 Dodge Ram 2500 Laramie
2006-2007 Dodge Ram 2500 Sport
2006-2007 Dodge Ram 2500 TRX4
2008-2010 Dodge Ram 2500 SXT
2010 Dodge Ram 2500 TRX
1999-2002 Dodge Ram 3500 Base
2003-2010 Dodge Ram 3500 Laramie
2003-2010 Dodge Ram 3500 ST
2006-2007 Dodge Ram 3500 Sport
2007 Dodge Ram 3500 TRX4
2008-2009 Dodge Ram 3500 SXT
2008-2010 Dodge Ram 4500 Laramie
2008-2010 Dodge Ram 4500 SLT
2008-2010 Dodge Ram 4500 ST
2008-2010 Dodge Ram 5500 Laramie
2008-2010 Dodge Ram 5500 ST
2011-2013 Ram 2500 Laramie
2011-2013 Ram 2500 Laramie Longhorn
2011-2013 Ram 2500 Power Wagon
2011-2013 Ram 2500 SLT
2011-2013 Ram 2500 ST
2012-2013 Ram 2500 Outdoorsman
2013 Ram 2500 Big Horn
2013 Ram 2500 Lone Star

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Mishimoto Low-Temperature Thermostat for 1999-2013 Dodge/Ram 5.9L & 6.7L Cummins

Ensure your 1999-2013 Dodge or Ram 5.9L/6.7L Cummins operates at optimal temperatures with the Mishimoto Low-Temperature Thermostat. Designed for enthusiasts who push their trucks to the limit, this thermostat opens earlier than the stock unit, promoting enhanced coolant circulation and significantly reducing high engine temperatures. This is crucial for preventing overheating during heavy towing, hauling, or high-performance driving, thereby safeguarding your powerful Cummins engine.

Why Choose the Mishimoto Low-Temperature Thermostat?

  • Superior Cooling Efficiency: Opens at a lower temperature to allow coolant to flow through the engine sooner, reducing overall heat.
  • Engine Protection: Minimizes the risk of heat-related damage and ensures consistent performance under demanding conditions.
  • Robust Construction: Built to withstand the extreme temperatures and pressures found in Cummins diesel engines.
  • Direct Fit Application: Engineered for a precise fit, ensuring easy installation on your 1999-2013 Dodge/Ram 5.9L or 6.7L Cummins.
  • Improved Reliability: Helps maintain stable engine temperatures, contributing to the longevity and dependable performance of your truck.

The 5.9L and 6.7L Cummins engines are legendary for their power and capability. To unlock their full potential and ensure their longevity, an effective cooling system is paramount. The Mishimoto Low-Temperature Thermostat is a critical upgrade that actively manages engine heat, preventing the detrimental effects of prolonged high temperatures. Whether you're towing a heavy trailer, navigating challenging work sites, or simply seeking peace of mind on the road, this thermostat provides an added layer of protection. It ensures your engine runs cooler, performs better, and lasts longer, making it an essential modification for any serious Cummins owner.

Upgrade your Dodge or Ram Cummins with a thermostat designed for superior cooling and reliability. Get your Mishimoto Low-Temperature Thermostat today at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1999-2001 Dodge Ram 1500 Laramie
1999-2001 Dodge Ram 1500 Sport
1999-2003 Dodge Ram 1500 ST
2002-2003 Dodge Ram 1500 SLT
2003 Dodge Ram 1500 Laramie
1999-2002 Dodge Ram 2500 Base
2003 Dodge Ram 2500 Laramie
2003-2010 Dodge Ram 2500 SLT
2003-2010 Dodge Ram 2500 ST
2005-2010 Dodge Ram 2500 Laramie
2006-2007 Dodge Ram 2500 Sport
2006-2007 Dodge Ram 2500 TRX4
2008-2010 Dodge Ram 2500 SXT
2010 Dodge Ram 2500 TRX
1999-2002 Dodge Ram 3500 Base
2003-2010 Dodge Ram 3500 Laramie
2003-2010 Dodge Ram 3500 ST
2006-2007 Dodge Ram 3500 Sport
2007 Dodge Ram 3500 TRX4
2008-2009 Dodge Ram 3500 SXT
2008-2010 Dodge Ram 4500 Laramie
2008-2010 Dodge Ram 4500 SLT
2008-2010 Dodge Ram 4500 ST
2008-2010 Dodge Ram 5500 Laramie
2008-2010 Dodge Ram 5500 ST
2011-2013 Ram 2500 Laramie
2011-2013 Ram 2500 Laramie Longhorn
2011-2013 Ram 2500 Power Wagon
2011-2013 Ram 2500 SLT
2011-2013 Ram 2500 ST
2012-2013 Ram 2500 Outdoorsman
2013 Ram 2500 Big Horn
2013 Ram 2500 Lone Star

Product Details

Product Description

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Mishimoto Low-Temperature Thermostat for 1999-2013 Dodge/Ram 5.9L & 6.7L Cummins

Ensure your 1999-2013 Dodge or Ram 5.9L/6.7L Cummins operates at optimal temperatures with the Mishimoto Low-Temperature Thermostat. Designed for enthusiasts who push their trucks to the limit, this thermostat opens earlier than the stock unit, promoting enhanced coolant circulation and significantly reducing high engine temperatures. This is crucial for preventing overheating during heavy towing, hauling, or high-performance driving, thereby safeguarding your powerful Cummins engine.

Why Choose the Mishimoto Low-Temperature Thermostat?

  • Superior Cooling Efficiency: Opens at a lower temperature to allow coolant to flow through the engine sooner, reducing overall heat.
  • Engine Protection: Minimizes the risk of heat-related damage and ensures consistent performance under demanding conditions.
  • Robust Construction: Built to withstand the extreme temperatures and pressures found in Cummins diesel engines.
  • Direct Fit Application: Engineered for a precise fit, ensuring easy installation on your 1999-2013 Dodge/Ram 5.9L or 6.7L Cummins.
  • Improved Reliability: Helps maintain stable engine temperatures, contributing to the longevity and dependable performance of your truck.

The 5.9L and 6.7L Cummins engines are legendary for their power and capability. To unlock their full potential and ensure their longevity, an effective cooling system is paramount. The Mishimoto Low-Temperature Thermostat is a critical upgrade that actively manages engine heat, preventing the detrimental effects of prolonged high temperatures. Whether you're towing a heavy trailer, navigating challenging work sites, or simply seeking peace of mind on the road, this thermostat provides an added layer of protection. It ensures your engine runs cooler, performs better, and lasts longer, making it an essential modification for any serious Cummins owner.

Upgrade your Dodge or Ram Cummins with a thermostat designed for superior cooling and reliability. Get your Mishimoto Low-Temperature Thermostat today at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1999-2001 Dodge Ram 1500 Laramie
1999-2001 Dodge Ram 1500 Sport
1999-2003 Dodge Ram 1500 ST
2002-2003 Dodge Ram 1500 SLT
2003 Dodge Ram 1500 Laramie
1999-2002 Dodge Ram 2500 Base
2003 Dodge Ram 2500 Laramie
2003-2010 Dodge Ram 2500 SLT
2003-2010 Dodge Ram 2500 ST
2005-2010 Dodge Ram 2500 Laramie
2006-2007 Dodge Ram 2500 Sport
2006-2007 Dodge Ram 2500 TRX4
2008-2010 Dodge Ram 2500 SXT
2010 Dodge Ram 2500 TRX
1999-2002 Dodge Ram 3500 Base
2003-2010 Dodge Ram 3500 Laramie
2003-2010 Dodge Ram 3500 ST
2006-2007 Dodge Ram 3500 Sport
2007 Dodge Ram 3500 TRX4
2008-2009 Dodge Ram 3500 SXT
2008-2010 Dodge Ram 4500 Laramie
2008-2010 Dodge Ram 4500 SLT
2008-2010 Dodge Ram 4500 ST
2008-2010 Dodge Ram 5500 Laramie
2008-2010 Dodge Ram 5500 ST
2011-2013 Ram 2500 Laramie
2011-2013 Ram 2500 Laramie Longhorn
2011-2013 Ram 2500 Power Wagon
2011-2013 Ram 2500 SLT
2011-2013 Ram 2500 ST
2012-2013 Ram 2500 Outdoorsman
2013 Ram 2500 Big Horn
2013 Ram 2500 Lone Star

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