51 21 300 Removing and installing or replacing window recess cover strip on outside of left or right front door

Attach adhesive tape (1) below window cavity cover strip (2) (risk of damage).

Fig 1: Attaching Adhesive Tape Below Window Cavity Cover Strip

Courtesy of BMW OF NORTH AMERICA, INC.

Using special tool 00 9 311, starting at back, (1) and moving to front (2), lift out window cavity cover strip.

Installation: 

1. Coat cover strip with anti-friction agent.
2. Cover strip must form flush seal with rear edge of door.

Fig 2: Coating Cover Strip With Anti-Friction Agent

Courtesy of BMW OF NORTH AMERICA, INC.

Only replace:

Remove gasket (1) from chrome strip (2).

Fig 3: Removing Gasket From Chrome Strip

Courtesy of BMW OF NORTH AMERICA, INC.