As I found it in the engine bay I guess it must be used somewhere in that area. I haver never seen it before. Not even when I disassembled everything for paint. My bumpers for the hood/bonnet are round without any "pockets".. . Tried taking a better photo with no luck. Just zoom and I guess it would be good enough to make an ID.
The part has been lying there since I got the car and thus never seen it. Have seen most other areas on my albino but this is a UFO.