Necessary preliminary tasks

WARNING: This page is about a different car, the 2011 BMW 328i, 2010 BMW 328i, and 2009 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

Remove front UNDERBODY PROTECTION
Remove rear UNDERBODY PROTECTION
Remove COMPLETE EXHAUST SYSTEM
REMOVE LOWER SECTION OF MICROFILTER HOUSING
REMOVE ACOUSTIC COVER

NOTE: The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.

Remove control sensor from cylinders 4 to 6.

Remove monitor sensor from cylinders 4 to 6.

Unscrew nuts.

Remove exhaust manifold (1).

Installation:

Clean sealing faces and replace seals.

Replace nuts.

Tightening torque, 18 40 1AZ .

Fig 1: Identifying Exhaust Manifold Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Reassemble the vehicle.

Check exhaust system for leaks.