MSW’s Take: We find these are often missing or badly rusted on cars when they first come into the shop. Simple fix to replace, and they keep your rotors in place during pad changes.
BMW Part Number: 34111123072
Genuine BMW Part
Application: E46M3 Front, E9XM3, and most E30 and newer M cars.
Sold Individually. (E46M3 uses 2 per front rotor.)