The Horton Remanufactured Fan Clutch is provide reliable and efficient cooling for your vehicle. With a back pulley diameter of 5.78" and an overall length of 6.85", this fan clutch is built to fit seamlessly into your Kenworth truck. This fan clutch is designed to significantly reduce the number of fan cycles, providing efficient and reliable cooling for your Kenworth truck. FleetPride is your First Click in Heavy Duty®.