The Mishimoto low-temperature primary thermostat for 2011+ Ford 6.7L Powerstroke lowers activation to 189°F/196°F compared with the factory 194°F/201°F, allowing coolant to flow earlier to maintain lower engine temperatures. This direct-fit thermostat suits vehicles operating in warm climates or under extreme towing and driving loads and is offered as a component for cooling-system upgrades.
Mishimoto 11+ Ford 6.7L Powerstroke Low-Temperature Primary Cooling Sys Thermostat