Mercedes-Benz OEM Bluetooth Cradle Replacer Adapter 2003 2004 E-Class Sedan Mercedes-Benz OEM Bluetooth Cradle Replacer Adapter. Enables hands free calling with Bluetooth wireless technology even without the factory phone system. Have the ability to continuously upgrade to newer phones in the future. For all U.S. 2003 and 2004 E-Class Sedan models (W211). Genuine OEM Mercedes-Benz Part.