13 54 250 Replacing air intake hose (N52/N52K/N53)

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Necessary preliminary tasks:

Switch off ignition
Remove Lower Section Of Microfilter Housing
Remove Intake Filter Housing

Unfasten clip.

Detach air-mass flow sensor (1) from throttle valve assembly.

Fig 1: Identifying Air-Mass Flow Sensor And Throttle Valve Assembly

Courtesy of BMW OF NORTH AMERICA, INC.