This accessory drive belt tensioner assembly is designed to match the fit of an original equipment assembly on specified vehicles. It is engineered to help ensure proper belt tension when an original belt is slipping, broken, or worn from fatigue. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Ford E-150 Econoline Club Wagon: 1997, 1998, 1999, 2000, 2001] - [Ford E-150 Econoline: 1997, 1998, 1999, 2000, 2001] - [Ford E-250 Econoline: 1997, 1998, 1999, 2000, 2001] - [Ford E-350 Club Wagon: 2003] - [Ford E-350 Econoline Club Wagon: 1997, 1998, 1999, 2000, 2001, 2002] - [Ford E-350 Econoline: 1997, 1998] - [Ford E-350 Super Duty: 1999, 2000, 2001, 2002, 2003, 2004, 2005] - [Ford E-450 Econoline Super Duty Stripped: 2000, 2001, 2002] - [Ford E-450 Econoline Super Duty: 1999, 2000, 2001, 2002] - [Ford E-450 Super Duty Stripped Chassis: 2003] - [Ford E-450 Super Duty: 2003, 2004] - [Ford E-550 Econoline Super Duty: 2002] - [Ford Econoline Super Duty: 1997, 1998, 1999] - [Ford Econoline: 1999, 2000, 2001] - [Ford Excursion: 2000, 2001, 2002, 2003, 2004, 2005] - [Ford Expedition: 1997, 1998, 1999, 2000, 2001, 2002] - [Ford F-150: 1997, 1998, 1999, 2000, 2001, 2002, 2003] - [Ford F-250 Super Duty: 1999, 2000, 2001, 2002, 2003, 2004] - [Ford F-250: 1997, 1998, 1999, 2000, 2001, 2002, 2003] - [Ford F-350 Super Duty: 1999, 2000, 2001, 2002, 2003, 2004] - [Ford F-350: 1999, 2000, 2001, 2002] - [Ford F-450 Super Duty: 1999, 2000, 2001, 2002, 2003, 2004] - [Ford F-53 Motorhome Chassis: 1999, 2000, 2001] - [Ford F-550 Super Duty: 1999, 2000, 2001, 2002, 2003, 2004] - [Ford Lobo: 1997, 1998, 1999, 2000, 2001, 2002, 2003] - [Lincoln Navigator: 1998, 1999, 2000, 2001, 2002]