The Dayco Serpentine Automatic Belt Tensioner is designed to provide reliable performance and long-lasting durability for International applications. This tensioner features a counter clockwise rotation and a serpentine belt type. It has one pulley with a diameter of 74mm. It is constructed with thermoplastic rubber spring slot plugs and rubber O-ring seals to help keep contaminants out. It also has a heavy duty cast aluminum spring case and arm to help resist cracking and fatigue. Additionally, it has a steel pivot tube on specific designs for enhanced stability. FleetPride is your First Click in Heavy Duty®.