13 54 250 Replacing intake hose (between air-mass flow sensor and connecting piece) (M54)

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Switch off ignition.

Unlock plug (1) and detach from air-mass flow sensor.

Detach vacuum line (2) from intake hose.

Release hose clamp (3).

E39:

withdraw intake hose from resonator.

Remove intake hose together with air-mass flow sensor.

Fig 1: Detaching Vacuum Line From Intake Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check sealing ring (1) between air-mass flow sensor and intake filter housing for damage, replace if necessary.

Coat sealing ring (1) with acid-free grease.

Fig 2: Checking Sealing Ring Between Air-Mass Flow Sensor & Intake Filter Housing

Courtesy of BMW OF NORTH AMERICA, INC.

If intake hose is replaced:

Insert air-mass flow sensor in new intake hose.