The Horton DM Advantage Two-Speed Remanufactured Fan Clutch for Mack is the perfect solution. Designed to fit Mack trucks with a back pulley diameter of 5.48" and a front pulley diameter of 5.68", this fan clutch is built to last. This fan clutch is easy to install and will provide reliable performance. The Two-Speed Remanufactured Fan Clutch for Mack is manufactured with a long-wearing air cartridge that ensures high performance and efficient engine cooling. The spring actuates at higher temperatures when more cooling is needed, making it the perfect choice for heavy-duty trucks that need to perform in tough conditions. If you're looking for a reliable and efficient fan clutch for your Mack truck, the Two-Speed Remanufactured Fan Clutch is the perfect choice. With its durable construction and high-performance capabilities, it's sure to keep your engine running smoothly and efficiently. FleetPride is your First Click in Heavy Duty®.