This is a genuine OEM Ford pinon shaft input assembly for 1983-1984 Thunderbirds. It is a vintage part made in the United States and is a direct replacement for your front steering and suspension system. The part number is E4SZ-3D517-B and it is a unit type with a unit quantity of one. It is designed to fit perfectly and function like the original part, making it a great choice for those looking to restore their Thunderbird to its former glory. This item has been superseded by part number E4SZ3D517F and is compatible with Ford vehicles.