WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.
0491854 311004 Pipe MW
NOTE:
(Support tube) For installing the rubber mount in the front axle support, series: E12 [discontinued]