i was looking for the part number for my 03 mini that is a black piece that the bumper attaches too on the sides. it has like a spring type thing on it that helps position the bumper up or down. the spring part on mine broke and now the bumper sits too low on the side so theres a gap between the bumper and the hood. i attached a pic the sort of shows the part.

 

Try realoem.com/bwm or penskeparts.com to search the diagrams and find the correct part number for your model, year, and build date.

 

the site was a big help, thanks