18 40 050 Removing and installing/replacing front exhaust manifold (N52/ N52K/ N51)

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

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.

For tightening torque refer to 1AZ in 18 40 EXHAUST MANIFOLD .

Fig 1: Front Exhaust Manifold And Mounting Nuts

Courtesy of BMW OF NORTH AMERICA, INC.