The Horton 12V Engine Cooling Fan Clutch is the perfect solution for Freightliner and Sterling trucks. With a mounting pilot diameter of 2.21" and a fan pilot of 5", this fan clutch is designed to fit seamlessly into your engine cooling system. The bolt circle measures 6", and there are four slots/holes for easy installation. This fan clutch operates on 12 volts, making it easy to install and maintain. It is designed to be maintenance-free, so you can spend more time on the road and less time in the shop. The no-slip operation ensures a quick response to cooling requirements, keeping your engine running smoothly. With no air supply required, installation is simple and straightforward. This fan clutch is a compact and efficient addition to your engine cooling system. Whether you're a professional truck driver or a fleet manager, the Engine Cooling Fan Clutch is a reliable and durable choice for your Freightliner or Sterling truck. FleetPride is your First Click in Heavy Duty®.