51 12 742 Replacing one impact absorber for rear bumper

(bumper removed) 

1. If necessary, remove rear bumper. Refer to 51 12 000 REMOVING AND INSTALLING COMPLETE REAR BUMPER .
2. Remove support on side member, refer to 51 46 050 REMOVING AND INSTALLING/REPLACING FINISHER FOR TOP OF REAR APRON 

Release nuts (1) on inside and remove shock absorber.

Fig 1: Removing Shock Absorber

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Tightening torque 51 12 3AZ. Refer to BODY EQUIPMENT - TIGHTENING TORQUES .