51 21 351 Replacing window recess cover on left or right front door
WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.
Remove and install window cavity trim on inside of front door, refer to 51 21 330 REMOVING AND INSTALLING/REPLACING WINDOW CAVITY COVER STRIP ON INNER FRONT DOOR .
Pull window cavity gasket (1) off window cavity cover strip (2).
Installation:
Coat window cavity seal (1) for assembly with rubber protection coating agent (sourcing reference: BMW Parts Service).