18 40 060 Removing and installing/replacing rear exhaust manifold (N52)

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Necessary preliminary work:

Remove COMPLETE EXHAUST SYSTEM
Remove front UNDERBODY PROTECTION
Remove rear UNDERBODY PROTECTION

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 MONITORING 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: Locating Exhaust Manifold Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check exhaust system for leaks.