51 64 020 Removing and installing/replacing top rear connection: Replacement

Release screws (1).

Tightening torque 51 61 4AZ .

Detach rear connection (2) from front connection (3).

Installation: 

Guide lug secures rear connection (2) to front connection (3).

Fig 1: Identifying Rear, Front Connection And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Only if replacing front connection (3): 

Modify plug (1) and retaining clip (2).

Fig 2: Identifying Plug, Front Connection And Retaining Clip

Courtesy of BMW OF NORTH AMERICA, INC.