51 11 170 Replacing body molding for left or right bumper

Unclip rubbing strip (1) with special tool 00 9 321 (folding leg) first at front, then at side, pull out at side from bumper (2) and remove.

Fig 1: Uncliping Rubbing Strip With Special Tool 00 9 321

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

1. Push rubbing strip (2) at side into bumper.
2. Slide guide (1) of rubbing strip (2) into support (3) of base (4) and clip in rest.

Fig 2: Identifying Slide Guide Of Rubbing Strip Into Support Of Base And Clip In Rest

Courtesy of BMW OF NORTH AMERICA, INC.