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180 Degree Thermostat for RAM 6.4L (2500,3500,4500)

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180 Degree Thermostat for RAM 6.4L (2500,3500,4500)180 Degree Thermostat for RAM 6.4L (2500,3500,4500)180 Degree Thermostat for RAM 6.4L (2500,3500,4500)180 Degree Thermostat for RAM 6.4L (2500,3500,4500)180 Degree Thermostat for RAM 6.4L (2500,3500,4500)
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180 Degree Thermostat for RAM 6.4L 

An efficient cooling system is essential for your 6.4 HEMI engine. This thermostat increases the efficiency of your engine's cooling system by opening at 180°F, compared to your vehicle's standard thermostat, which opens at 203°F. This allows coolant to flow through sooner, helping to reduce and maintain cooler temperatures in the engine. This is also a great addition to vehicles with upgraded radiators and fans. 


  • Fits the following vehicles:

    • 2007 - Current: RAM 1500 6.4L only (note: early 2007 vehicles might have a gen III engine, not compatible) 
    • RAM 2500, 3500, 4500 vehicles (6.4L engine only)


Pro Tips:

Engine Cooling Service: We recommend replacing the thermostat and flushing the cooling system every 45,000 miles or every 4 years. This helps to remove any accumulated debris, contaminants, and old coolant, ensuring the proper functioning of the cooling system. Check coolant expansion tanks, hoses, and fittings along with your coolant system service. 

Tuning: Installing the RIPP low-temperature thermostat is a very effective way to lower engine temperatures. Although tuning is unnecessary, with the lower-temperature thermostat installed, you can use the cooler engine conditions to fine-tune fuel and timing parameters. This can result in increased horsepower and torque and avoid any dash lights when operating in a very cold environment. (ie, installing a temp thermostat in a cold environment could trigger a warning light indicating a slow warm up time)

Coolant Mixture: The coolant-to-water mixture in an engine's cooling system plays a crucial role in regulating the engine's operating temperature. The mixture typically consists of coolant and water. The standard recommended mixture is 50:50 mix. However in race application or hot environment it common to adjust the ratio as deemed necessary. A higher water content enhances the thermal conductivity of the mixture, improving its ability to transfer heat away from the engine components. This can be beneficial in a race application where the engine is subjected to high loads and temperatures. Always consult with a professional as every vehicle will have it's own variables.

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