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13 71 160 Removing and installing/replacing front air duct

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:

Risk of damage  through lever action at the top on the air duct!

Air duct may break!

Necessary preliminary tasks: 

Unlock and remove coolant hose (1).

Release quick-connect coupling (2) by turning lock and detach.

Release hose clamp and detach air duct (3).

Tightening torque 13 71 1AZ .

Fig 1: Identifying Coolant Hose, Quick-Connect Coupling And Air Duct
G05502103Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Turn lock (1) back until arrow markings are flush.

Push air hose onto air duct.

Air hose must audibly snap into place.

Fig 2: Identifying Lock
G05502104Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts and detach coolant hose (1).

Installation: 

Check sealing ring, replace if necessary.

Release screws (2).

Tightening torque 13 71 3AZ .

Fig 3: Identifying Coolant Hose And Screws
G05502105Courtesy of BMW OF NORTH AMERICA, INC.

Unclip line (1).

Release coolant hose (2) from holder (4), unlock and remove.

Release coolant hose (3) from holder (4) and lay downwards to one side.

Fig 4: Identifying Line, Coolant Hose And Holder
G05502106Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT:

Detach air duct from turbocharger.

Risk of damage  through lever action at the top on the air duct!

Air duct may break!

Detach air duct (1) in direction of arrow.

NOTE: Illustration with engine removed.
Fig 5: Detaching Air Duct
G05502107Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Check sealing ring (1) for damage and replace if necessary.

Make sure sealing ring (1) is correctly seated in air duct (2).

Fig 6: Identifying Sealing Ring And Air Duct
G05502108Courtesy of BMW OF NORTH AMERICA, INC.