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 REAR EXHAUST MANIFOLD

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

Remove control sensor from cylinders 1 to 3.

Remove monitor sensor from cylinders 1 to 3.

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

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Reassemble the vehicle.

Check exhaust system for leaks.