17-0005 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.
0491389 170005 Adapter MW
Replaced by: 0494417
NOTE:
(Adapter) For screw-on radiator caps (sawtooth thread) / Series: E31, E32, E34, E36, E38, E39 Replaced by 17 0 100. (0 494 417) [Replaced]
Storage Location: C17
Courtesy of BMW OF NORTH AMERICA, INC.