WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
(leak-tight adapter) For sealing the line during the evaporator leakage test in the E70 (included in the delivery specification from 02/2007)