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.
0490464 004550 Awl MW
NOTE:
(Reamer adjustable 21.5...22.5 mm) For gudgeon pin bush in the connecting rod, discontinuation since February 95 [Discontinued]