Engine control module from a 2003 Mustang GT. This is in good working order and was removed from a vehicle that ran well with no CELs or stored codes. The case and connectors have no damage. The pictures are of the actual part you will receive. This item will require on-car programming, coding or flashing during installation in order to work with your vehicle. Please confirm that you or your repair facility can perform this procedure before making your purchase. Part number is 3R3A-12A650-CB. This fits 03 Mustang GT with automatic transmission and matching number. Please make sure to match number before ordering.