Factory GPS Navigation System DVD disc player for a 2001-2006 BMW E46 M3. Will only work with vehicles that came equipped from the factory with the navigation package. Removed from a 2003 M3 with a functioning navigation system. Fully tested prior to removal from the vehicle. You will need to reuse your existing navigation disc, or source a new regional disc for use. Please verify the part number listed below matches your existing unit prior to purchase. This may need to be reprogrammed by your local dealership to work with your vehicles display unit.