I was replacing my driver side fog lamp on my 1994 325ic, when I noticed a loose plastic component, which had been wedged in behind the bumper. It wasn't connected to anything, and it dropped off as I was removing the lamp bracket. I believe that it is a duct, narrow at one end and wider at the other. The wider end is angled, with openings for tabs. It has a part number which reads "51.71-8 156 251".
Can anyone tell me what to connect this to? Am I damaging anything by driving without it? Is there a diagram somewhere to show where and how it connects? I can't even find the part on any of the after-market sites.
Thanks in advance.