18 32 050 Removing And Installing/Replacing Catalytic Exhaust Gas Converter For Cylinders 1-3 (N54)

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

18 0 110 . See 18 0 110 GAUGE .

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

Necessary preliminary tasks:

Remove underbody protection . See 1 51 47 490 REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION and 51 47 491 REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION .
Remove exhaust system . See 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N54) .
Remove RIGHT OUTPUT SHAFT .
Remove oxygen sensor . See EMISSION CONTROL OXYG .
Secure ENGINE IN INSTALLATION POSITION .
Remove both monitor sensors . See 11 78 613 REPLACING BOTH LAMBDA OXYGEN MONITOR SENSORS (N54) .
Remove heat shield.

Unscrew nuts (1).

Tightening torque. See 18 20 2AZ in 18 20 EXHAUST SYSTEM SUSPENSION .

Unscrew screws (2).

Tightening torque. See 18 20 6AZ in 18 20 EXHAUST SYSTEM SUSPENSION .

Bracket remove.

Fig 1: Identifying Nuts And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

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. See 18 30 3AZ in EXHAUST SYSTEM - TIGHTENING TORQUES (N54) .

Fig 2: Identifying Catalytic Converter And Clip

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Add final details to vehicle.

Fig 3: Securing Installation Position Of Catalytic Exhaust-Gas Converter Using Special Tool 18 0 110

Courtesy of BMW OF NORTH AMERICA, INC.