171 589 06 63 00 Roller - WS72.00-P-0031B
FG 72/77/Set B
MODEL 171, 172, 207, 216, 219, 221, 230
Use:
Roller for installing A-pillar seal and roof frame (validity R171) as well as assembly of window guide rail in door frames (all BR except BR with frameless door).
Courtesy of MERCEDES-BENZ USA