12-1040 Tool
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.
0491111 121040 Tool MW
NOTE:
(Tool) Longer design to adjust the dynamic ignition timing and carburettor synchronisation - discontinued since July 92 / manual gearbox [Discontinued]