51 12 828 Removing and installing/replacing guide for bumper at rear left or right (bumper panel removed)

Release nuts (1)) and screws (3) and remove guide (2).

Installation note: 

Replace faulty nuts (1).

Fig 1: Identifying Rear Bumper Guide, Nuts And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement 

Remount sheet metal nuts on guide (2).