Belt Tensioner 816.49513 ,38513, 89482DAY,3911621,3922549,3922901,3925625,3925825,3928748,3934719

This automatic belt tensioner keeps consistent tension on the serpentine/accessory drive belt as it wears, preventing slippage, squealing, and premature belt failure. It's a spring-loaded assembly designed to bolt in as a direct replacement.

Cross-reference part numbers: 816.49513, 38513, 89482DAY, 3911621, 3922549, 3922901, 3925625, 3925825, 3928748, 3934719. In stock and ready to ship fast from United Truck Parts in Pennsylvania — call us with your old part number to confirm fitment before you order.