BTX16 8/3/2010Here's a pic (just for the link below) an example of a throttle cable clip. I took this as an example for I can't find any available pic for your car. (only for BMW)
Just correct me if I'm right, if that is the clip that your looking for, I think you have to refer your car to the dealer for the replacement of the clip. There's no available clip to any list, it consist of a kit if you want to purchased. Dealer has the part that you need and they will fix your problem. I'm sorry but, thats the only thing I could suggest.