8010 Adapter
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.
0491201 128010 Adapter MW
NOTE:
(Plug adapter for CNG wiring harness) For reducing the gas pressure in the CNG system [Discontinued]
Storage Location: W 2..
SI number: 01 14 95 (014)
Courtesy of BMW OF NORTH AMERICA, INC.