Available models (front):
Old school metal with relief: P/N 51 14 5 480 181
Flat plastic replacement for E21, E30, etc: P/N 51 14 8 132 375
Latest version for F10, F30 etc is more flat and doesn't have the pins anymore, has adhesive tape on the back: P/N 51 76 7 288 752
For the trunklid there's no old school version sadly, only one version for the rear and that one's flat, P/N 51 14 1 872 328

Detail photo of the '181':
