Non-locking Fuel Filler Cap. This part generally fits Ford vehicles and includes models such as Mustang with the trims of Base Convertible 2-Door,Base Coupe 2- Door,GT Base Convertible 2-Door,GT Base Coupe 2-Door,GT Convertible 2-Door,GT Coupe 2-Door,GT Equipado Convertible 2-Door,GT Equip ado Coupe 2-Door,Lujo Convertible 2-Door,Lujo Coupe 2-Door,Shelby GT Coupe 2-Door,Shelby GT500 Convertible 2-Door,Shelby GT500 Cou pe 2-Door.