I have a 2005 SLK350 and the radio got shorted out (spilled on) and needs to be replaced (not covered under warranty). I'm trying to find a used one to stick in it so I don't have to buy a new retail radio from my dealer. I found one that looks identical but it's out of a 2005 C240. The seller believes it will work in any 05-07 C, E, SLK, and CLK class car. FYI, I do not have nav...just the basic in-dash CD head unit. I've seen the pictures of this radio and it looks identical to mine...but I called the dealer with the part number and they said it only shows a match for the C class. But he was also quick to point out that it's for sure NOT going to work....he's just not able to tell whether it will or not in his computer. The part number of the radio I found is a 203 827 39 42. Obviously the concern is about the plugs etc., all being compatible so the steering wheel controls work etc... I desperately want this radio to work because I'm getting it for only $150...but don't want to get stuck with a worthless radio to me either! Can anyone help me if this will work in my car or not??? Thanks for the help guys!