18 40 040 Removing and installing, sealing/replacing the exhaust manifold (N47 D16/20 K/U/O 1)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Risk of burning!
Only perform this repair work on an engine that has cooled down.

Necessary preliminary tasks:

Remove EXHAUST TURBOCHARGER .

Release screws (1).

Tightening torque 11 71 1AZ .

Do not release screws (2).

Fig 1: Identifying Exhaust Manifold Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Tightening torque 18 31 5AZ .

Unfasten banjo bolt (2).

Tightening torque 13 62 7AZ .

Replace sealing rings.

IMPORTANT: To ensure operational reliability, use stainless steel sealing washers.

Fig 2: Identifying Banjo Bolt, Nut, Screw And Heat Shield

Courtesy of BMW OF NORTH AMERICA, INC.

Set exhaust pressure pipe onto its side.

Release screw (3).

Tightening torque 18 31 6AZ .

Remove heat shield (4).

Release nuts along dashed line (1).

Tightening torque 11 62 1AZ .

Remove exhaust manifold (2) from cylinder head.

Installation note:

Clean connection points.

Replace gaskets.

Fig 3: Identifying Cylinder Head Exhaust Manifold

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Manifold gaskets are graphite-coated on one side!

The graphite coating must be fitted on the manifold side.

Assemble engine.

Check function of DDE.

Fig 4: Locating Graphite Coating On Manifold Side

Courtesy of BMW OF NORTH AMERICA, INC.