Product Details: Update your semi with proper engine cooling in a complete range of temperatures, with the Horton Electromagnetic Fan Clutch that ensures you're Ready for the Road Ahead™. Due to its temperature-based design, this replacement component is able to control the operation of the engine's cooling fan by applying or removing power as needed. Constructed with an easy-to-install body that quietly works to cool the engine. FleetPride is your First Click in Heavy Duty®.