A fan clutch regulates cooling by governing the fan speed in response to the air temperature, allowing the radiator to operate at peak efficiency regardless of whether you are stuck in stop-start traffic in the blistering heat or out on the highway in cool clean air.

GMB fan clutches are defined by two key areas of excellence, the bearing which invariably governs the life, and the diecast body which governs the strength, of the fan clutch. Their precisely manufactured bimetal slide valve regulates the speed of the fan based on temperature, ensuring reliable temperature regulation thanks to a completely passive control solution.