Thread: What is this and where does it go?

I need help identifying this part and finding out where it goes. I had to remove the timing chain cover to fix a water leak on my sons 2006 3800 Series 3 supercharged Grand Prix. In the process of removing the cover this fell off and I dont know what it is or where it goes. I am assuming it has something to do with the oil filter housing but I am not sure where. Any help would be appreciated.