Although, the N54 engine has an all aluminum crankcase, many of the bolts are
still aluminum as on the N52.
This is to reduce any potential confusion between steel and aluminum bolts.
Some bolts, for example, are steel
such as the cylinder head cover bolts. This is possible, due to the plastic
cy
REMOVING AND INSTALLING/REPLACING SPEAKER (TWEETER, FRONT DOOR)
Necessary preliminary tasks:
Remove front door trim.
Detach cover on door window frame in front area.
NOTE: For purposes of clarity, illustration shows cover removed on door
window
frame.
Remove foam wedge (1) from cover on door wi