Install the window channel strip of the inner rear door

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Foam seals (1) and (2) must not be damaged or missing, replace as needed.
Make sure the foam seal (1) and (2) is fitted correctly.

Courtesy of BMW OF NORTH AMERICA, INC.
Align the window channel strip (1) and connect to door.

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING REAR DOOR TRIM PANEL .
Refer to ATTACHING THE COVER TO THE DOOR HANDLE .