Necessary preliminary tasks

WARNING: This page is about a different car, the 2012 BMW 328i, 2011 BMW 328i, 2010 BMW 328i, and 2009 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

Remove FRONT ASSEMBLY UNDERSIDE PROTECTION
Remove REINFORCEMENT COVER ON LEFT AND RIGHT

Partly detach UNDERBODY PANELLING ON LEFT AND RIGHT in area of reinforcement brace

Release screws (1).

Remove reinforcement brace (2).

Installation:

Replace screws and insertion nuts.

Tightening torque 31 10 2AZ .

Fig 1: Identifying Reinforcement Brace With Screws

Courtesy of BMW OF NORTH AMERICA, INC.