Keep your accessory drive belt from squeaking and squealing with a new 1994-2004 Mustang belt tensioner. These tensioners are a direct replacement and restore the correct amount of tension to your accessory drive. Add on a new idler pulley and get your belt running smoothly again! These tensioners and pulleys fit 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, and 2004 Mustangs.