I need to replace the transmitter unit cover on my 2005 audi A4. I broke it in half.?

[sunshineinfl]

I tried super glue to put it back together. Big mistake now I have a white strike on my car. Is there any where I can purchase a new transmitter unit cover. This cover is on the driver side bumper. This is the little box that you would use to program your home garage opener. There is one on each side. My car is black and the white mark looks real bad. A new bumper or paint job is out the question. Can I go to a junk yard for the part?