Product Details: The Gates Engine Coolant Thermostat keeps you Ready for the Road Ahead™, as a robust and reliable thermostat solution that properly regulates coolant flow through your engine for faster engine warm-ups and improved fuel economy. This high-quality Gates coolant thermostat assures accurate temperature control under variations in temperature, load, and engine vibrations. As a result, this heavy duty engine coolant thermostat maintains vehicle efficiency for exceptional performance, decreased downtime and extended engine life. FleetPride is your First Click in Heavy Duty®.