Gen 3 Hemi 180° High Flow Thermostat

Tired of crappy thermostats failing within a short time? If so, look no further! If not, we'll see you back here soon. READ BELOW!!!

Whether it's for your 6.2L Hellcat, 392" / 6.4L, 6.1L, or your 5.7L engine, this thermostat will fit the bill!

In 1899, inspired by necessity, Frederick W. Robertshaw invented the thermostat. Then he founded a manufacturing company to make it.

With their precision design and great track record for reliability, why would you use anything else?

Quality, handmade in the United States.

The Power Pill®

The POWER PILL® element, located inside the poppet assembly is the heart of a Robertshaw thermostat. It responds to the minute changes in the temperature of the coolant surrounding it. Temperature regulation is achieved by movement of the precision-engineered piston which opens and closes the thermostat's coolant flow to maintain the desired temperature. Operation of the POWER PILL® element is unaffected by pressure changes in the system.

Robertshaw thermostats have major advantages:

1) Rapid response. The Power Pill's piston is activated by a temperature-sensitive mixture of metallic powder and wax. Some thermostats use an all-wax charge, which responds slowly to temperature changes. Other brands mix copper powder with the wax for faster response, but the copper quickly separates from the wax. Robertshaw developed a process to maintain suspension of the copper powder in the wax, so the fast response doesn't deteriorate and the thermostat will not "stick-open" to cause the engine to run cool.

2) Reliable performance. Most thermostats use a one-piece rubber diaphragm to seal the charge and drive the piston. If the rubber part ruptures, the thermostat fails. Robertshaw uses two separate parts: a diaphragm to seal the wax, and a stem seat or plug that drives the piston. Wear or damage to the stem seat still allows the thermostat to operate satisfactorily.