51 21 140 Removing and installing/replacing complete lock barrel in left or right front door

Necessary preliminary tasks: 

• Remove CARRIER FOR OUTER DOOR HANDLE 

Release screw (1) and pull out lock barrel (2).

Tightening torque 51 21 6AZ .

Fig 1: Identifying Lock Barrel And Screw

Courtesy of BMW OF NORTH AMERICA, INC.