1170 Tool
WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.
0492463 341170 Tool MW
NOTE:
(Installation tool) For pressing in the shielding caps on both sides in the fixed caliper shafts - brake piston diameter 54 - 57 mm / single-circuit brake system [Discontinued]
Courtesy of BMW OF NORTH AMERICA, INC.