Thermostats

Premium 6.7 Powerstroke Thermostats & Dual-Thermostat Upgrades

Regulating engine temperature is absolutely critical to the efficiency, emissions output, and structural longevity of the 6.7L Ford Powerstroke. Unlike traditional platforms that utilize a single thermostat, the 6.7L engine utilizes a unique dual-thermostat design in its primary cooling loop. These two thermostats work in tandem within a single housing: the primary thermostat opens first to initiate baseline cooling flow, while the secondary thermostat opens at a higher temperature to handle extreme thermal loads during heavy towing or hot weather. When either of these components sticks open, your engine will struggle to reach optimal operating temperature, leading to poor fuel economy and excessive DPF soot buildup. Conversely, if they stick closed, catastrophic overheating can occur within minutes.

Our specialized inventory features high-quality replacement and performance thermostats engineered specifically for the 6.7L platform. We stock premium OE-spec direct-fit replacement dual-thermostat kits designed to restore factory cooling system dynamics, as well as high-performance low-temp thermostats for truck owners looking to initiate coolant flow earlier. Replacing these wear items is highly recommended during any cooling system refresh, such as installing a new water pump or aluminum radiator.

Because the dual-thermostat setup relies on tight seals, every kit we offer includes high-grade replacement O-rings and gaskets to prevent external coolant leaks at the housing. Upgrading to fresh, reliable thermostats guarantees that your engine warms up quickly in freezing weather and sheds heat efficiently when pulling a heavy load up steep grades. Browse our selection of 6.7 Powerstroke thermostats, and trust the technical experts at Full Force Diesel to help keep your truck running in the ideal temperature zone.