18 32 060 Removing and installing/replacing catalytic exhaust-gas converter for cylinders 4-6 (N54)

WARNING: This page is about a different car, the 2010 BMW 535i, 2009 BMW 535i, and 2008 BMW 535i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Scalding hazard!
Only perform these tasks after exhaust system has cooled down.

Necessary preliminary tasks:

REMOVE CATALYTIC CONVERTER, CYLINDERS 1-3 .

NOTE:

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

Remove CONTROL SENSOR, CYLINDERS 4 TO 6

Remove MONITOR SENSOR, CYLINDERS 4 TO 6

Unfasten clip. In so doing, secure catalytic converter (1) against falling out.

Remove catalytic converter (1).

Installation:

Clean sealing face and replace seal.

Tightening torque 18 00 3AZ .

Fig 1: Identifying Catalytic Converter

Courtesy of BMW OF NORTH AMERICA, INC.