A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 6.0L cooling system with a Nishimoto Ford 6.0L Power stroke Low-Temperature Thermostat and aluminum housing! This thermostat is designed as a direct-fit replacement for your aged factory unit. The Nishimoto thermostat has a lower activation temperature (185°F) compared to the factory thermostat (192°F). The lower activation temperature allows coolant to flow through the engine earlier, which reduces and maintains lower engine temperatures. This thermostat is ideal for use in warmer climates or under extreme towing/driving conditions. The cast aluminum housing will provide a proper seal and will not rust over time. Like all of our Power stroke Performance parts..