2001 - 2002 – 2003 - 2004 Mercedes C-Class & CLK AM FM Receiver. Dealer unlock required. Part Number: A2038201086. Model Number: CM1011. This is for a 2001 to 2004 Mercedes C-Class & CLK factory OEM AM FM radio receiver. If you do not have this exact part number currently in your vehicle it will NOT WORK. If you are unsure of your part number give us a call with your VIN and we should be able to provide you with the correct part number. They may look the same and have the same plugs but data streams may be different not allowing them to code. For example external amps are used in some cars and will not allow interchange etc. Appearance is great as pictured with minor wear on the knob, function is perfect! We stand proudly behind our products so this radio is covered by a 90 day warranty! Please Note: This radio will need to be unlocked upon installation in your vehicle by a Mercedes-Benz dealer.