Product Details: The Gates Heavy Duty Automatic Belt Drive Tensioner is designed to provide maximum stability and durability for International and Kenworth. This tensioner features double row bearings that carry more load and last up to three times longer than two separate bearings. The machined steel pulley reduces surface wear while shielding the internal bearing from external contaminants and damage. The damping mechanism provides maximum stability, reduces vibration and increases service life. FleetPride is your First Click in Heavy Duty®.