Engine control module from a 2004 Mazda 6. This was removed from a vehicle that ran well with no check engine light on. The case has some wear, but this will not affect its normal function. The connectors have no broken parts. The circuit board has been inspected and no damage was found. The images are of the actual item 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. Fits 2003-2004 Mazda 6 with 2.3L engine, automatic transmission and part number L335 18 881 regardless of the ending letter ONLY.