13 71 170 Removing and installing/replacing rear air duct (N54, N54T)

WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, and 2014 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Levering at the top of the air duct results in risk of damage!
Air duct may break!

Necessary preliminary tasks:

Remove left TRAILING LINK .
Remove front UNDERBODY PROTECTION .

NOTE: The overview shows the removed engine for better clarity.

Release sheet metal nuts (1).

Unfasten screws (2).

Remove heat shield (3).

Fig 1: Identifying Heat Shield, Sheet Metal Nuts And Screws

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Unlock and disconnect line (1).

Unlock connector (2) and remove.

Unlock and disconnect snap fastener (3).

Fig 2: Identifying Snap Fastener, Connector And Line

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Installation note:

Turn the lock (1) until the arrows line up.

Fig 3: Identifying Charge Air Duct Lock

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IMPORTANT: Do not pull the air duct off from the top!
Risk of damage!
Air duct may break!

Release screw (1).

Tightening torque 13 71 8AZ .

Release screw (2) and remove holder (3).

Tightening torque 13 71 12AZ .

NOTE: Illustration with engine removed.

Fig 4: Identifying Rear Air Duct Screws And Holder

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Pull off air duct (1) from exhaust turbocharger, feed out and remove.

NOTE: Illustration with engine removed.

Fig 5: Removing Air Duct From Exhaust Turbocharger

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Installation note:

Check sealing ring (1) for damage.

Replace damaged sealing ring.

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

Fig 6: Identifying Sealing Ring And Air Duct

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Required follow-up work:

Check air duct for tightness.