Gates 04-07 Kenworth T800 Caterpillar C13 Diesel Fan Alt. & A.C. Belt Drive Tensioner

FleetRunner Heavy-Duty Automatic Belt Drive Tensioner. Optimized components engineered for maximum strength and durability. Patented design provides superior belt alignment and tension for improved drive efficiency and life. Patented labyrinth seal prevents contamination of internal parts for maximum durability and service life. Long-lasting steel pulleys with dust shields to protect internal bearings from contamination. Double row bearings carry more load and last up to 3X longer than two individual bearings. Chrome-silicone round torsion spring for less flex-fatigue than flat-spring designs. Patented damping mechanism provides maximum stability, reducing vibration and increasing the life of the belt, tensioner and other accessory drive components.