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13-8022 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.
0491363 138022 Adapter MW
NOTE:
(Adapter hose (2 pieces)) With M6 connecting nipple and quick-release coupling {Discontinued]
Courtesy of BMW OF NORTH AMERICA, INC.