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.
0495258 645106 Adapter MW
NOTE:
(Sealing adapter) Sealing adapter for closing off the line for the leakage test (included in delivery specification from 01/2005) [Discontinued]