Up for sale is a Mercedes Comand 2.0 C-Class CLK Head Unit Radio Navigation Stereo A203 8274842. Quality tested. 

This unit should Fit 01-04 Mercedes W209 CLK55 AMG C320 or C55s but with a minor modification will fit ALL Mercedes’ w203 and w209 made between the years 2001 to 2004. Comes complete with pigtail and plugs. What see is what you get! This Head Unit has a Navigation, Radio, and CD. You can also buy a Bluetooth adapter and install it for bluetooth  accessibility. 

Obviously the Conditions of this unit is Used. Once again, it should fit (with minor modifications a 01-04 Mercedes W209 CLK500 CLK320 C240 C32 AMG