For Reference Only! 06-08 Mazda 6 Audio Stereo Radio CD CQEM4660AK Player Please make sure to match the part number of the item with the one you have. This item was taken off from another vehicle as it is and it has not been tested. this item may work as it is but repair is recommended. radios can be locked. You can get unlock code from the dealership, we do not provide unlock codes.