18 32 060 Removing and installing/replace catalytic converter for cylinders 4-6 (N54, N54T)

Special tools required:

WARNING: Risk of burning!
This repair work may only be carried out on an exhaust system which has cooled down.

Necessary preliminary tasks:

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 MONITORING SENSOR, CYLINDERS 4 TO 6 .

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

Feed out catalytic converter (1) towards bottom and remove.

Installation note:

Clean sealing surface. Replace seal and clamp.

Tightening torque 18 31 3AZ .

Fig 1: Identifying Catalytic Converter And Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Secure installation position of catalytic converter with special tool 18 0 110 .

Fig 2: Securing Installation Position Of Catalytic Converter With Special Tool 18 0 110

Courtesy of BMW OF NORTH AMERICA, INC.

Reassemble the vehicle.

Check exhaust system for leaks.