13-8025 Adapter
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.
0491366 138025 Adapter MW
NOTE:
(Adapter hose) With quick-release coupling and ring connection with banjo bolt for testing the output pressure at the metering unit [Discontinued]
Courtesy of BMW OF NORTH AMERICA, INC.