51 16 204 Removing and installing/replacing rear cup holder

Removal: 

Release screws/expanding rivets (1) and feed out the cup holder (2) upwards.

Fig 1: Screws/Expanding Rivets And Cup Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Feed in the cup holder (2) from the top and secure with screws/expanding rivets (1).

Fig 2: Screws/Expanding Rivets And Cup Holder

Courtesy of BMW OF NORTH AMERICA, INC.