51 71... Removing and installing/replacing left or right diagonal strut

Necessary preliminary tasks: 

• Remove FRONT UNDERBODY PROTECTION
• Remove the SUPPORT FOR THE FRONT BUMPER PANEL 

Undo nuts and bolts (1),

Tightening torque 51 71 5AZ .

Feed diagonal strut (2) out of air duct (3) and remove.

Fig 1: Identifying Diagonal Strut, Air Duct And Bolts

Courtesy of BMW OF NORTH AMERICA, INC.