The Horton DM Advantage Two-Speed Remanufactured Fan Clutch for Mack is designed to fit Mack trucks with a back pulley diameter of 5" and a front pulley diameter of 5.19". With an overall length of 9.43", this fan clutch is perfect for Mack trucks with a CL3 belt configuration of 6K, 10K, 1V and a belt groove location of 2". This fan clutch is manufactured by MACK and features a premium sheave bearing and long-wearing friction liner for maximum reliability and long operating life. It alternates eddy current and spring actuated cooling to moderate operating noise, which increases available horsepower, conserves fuel, and minimizes radiator abrasion. With the Two-Speed Remanufactured Fan Clutch, you can enjoy maximum available horsepower for auxiliary systems and reduced operating noise. FleetPride is your First Click in Heavy Duty®.