4550 Awl
WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. 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]
Courtesy of BMW OF NORTH AMERICA, INC.