51 76 031 Removing and installing/replacing front and rear gasket of engine compartment lid

Front gasket: 

Release gasket (1) at clips (2).

Installation note: 

Replace faulty clips (2).

Fig 1: Identifying Front Gasket And Clips

Courtesy of BMW OF NORTH AMERICA, INC.

Rear gasket: 

Release gasket (1) at clips (2).

Installation note: 

Replace faulty clips (2).

Fig 2: Identifying Rear Gasket And Clips

Courtesy of BMW OF NORTH AMERICA, INC.