This Gates DriveAlign 39179 Drive Belt Tensioner Assembly replaces Motorcraft BT134, Motorcraft BT137, Motorcraft BT96, Dayco 89665, Continental Belt 49465, Ford AL3E 6B209 AA, Ford AL3E 6B209 AB, Ford AL3E 6B209 AC, Ford AL3E 6B209 AD, Ford AL3Z 6B209 A, Ford AL3Z 6B209 B, Ford AL3Z 6B209 C, Tendeco 999947, Goodyear 49465, Litens 999947A, OEM parts and is perfect for replacement or a performance upgrade. .