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11 00 Removing and installing/replacing acoustic cover (N52/N52K): Notes

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IMPORTANT: Aluminium-magnesium materials.

No  steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

Aluminium screws/bolts must be replaced each time they are released  .

Aluminium screws/bolts are permitted with and without color coding (blue).

For reliable identification:

Aluminium screws/bolts are not magnetic  .

Jointing torque and angle of rotation must be observed without fail (risk of damage). 

Unfasten screws (1 and 3).

If necessary, release oil cap (2) in direction of arrow.

Lift off acoustic cover (4)

Fig 1: Identifying Screws, Oil Cap And Acoustic Cover
G04725330Courtesy of BMW OF NORTH AMERICA, INC.