WARNING: This page is about a different car, the 2008 BMW 760Li, 2007 BMW 760Li, and 2006 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.
Minimum set: Mechanical tools
Fig 1: Assembly Kit (11 0 170)
Courtesy of BMW OF NORTH AMERICA, INC.
NOTE:
For removing and installing Teflon rings on injector