WARNING: This page is about a different car, the 2013 BMW X5 M, 2012 BMW X5 M, 2011 BMW X5 M, and 2010 BMW X5 M. However, it is still accessible from the selected car via links, so may be relevant.
0491257 133020 Measuring glass MW
NOTE:
(Measuring glass) For checking of electric fuel pump - fuel delivery rate [discontinued]