Go to the BMW Wireless site BMW Wireless . The Userid is bmwna, and the Password is digital. On the right side you can click part serach by vehicle. If you go to the 5 series CPT8000, it will list the part numbers and availability of all the components for different production dates. Also, you can determine the handset you need from the home page by doing a zip code search, by entering your zip code, selecting CPT8000, and look for your desired service provider. Note that CPT8000 phone part number are different in some instances for the same carrier (i.e., Sprint, AT&T, Verizon) in different parts of the country. This is why you must enter the zip code for your desired service area. Hope this helps.m6050 said:Found this on Ebay, will it work on a 2000? Would the dealer need to be involved?