Remove the catalytic converter for cylinders 5 to 8

Preliminary work

Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
Refer to REMOVING THE REAR DIFFUSER .
Refer to IF INSTALLED: REMOVING THE TORSION STRUT ON THE RIGHT AND LEFT WHERE REQUIRED .
Refer to REMOVING THE REAR AXLE COVER .
Refer to REMOVING EXHAUST SYSTEM .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING INTAKE SILENCER HOUSING .
Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
Refer to REMOVING LEFT AND RIGHT WIPER ARM .
Refer to REMOVING THE COWL COVER .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE SEAL FOR THE HOOD REAR .
Refer to REMOVING THE COWL UPPER PART IN THE CENTER .
Refer to REMOVING THE LAMBDA OXYGEN SENSOR AND THE MONITORING OXYGEN SENSOR FOR CYLINDERS 1 TO 4 .
Refer to REMOVING THE LAMBDA OXYGEN SENSOR AND THE MONITORING OXYGEN SENSOR FOR CYLINDERS 5 TO 8 .
Refer to REMOVING ENGINE VENTILATION LINE .
Refer to REMOVING UPPER HEAT SHIELD .
Refer to RELEASING SCREW BETWEEN THE LEFT AND RIGHT HEAT SHIELD .
Refer to REMOVING RIGHT HEAT SHIELD .
Refer to REMOVING THE LEFT HEAT SHIELD .
Refer to BENDING THE HEAT SHIELD TO THE REAR .
Refer to REMOVING VACUUM PUMP .

NOTE: TECHNICAL INFORMATION
In order to be able to remove the catalytic converter for cylinders 5 to 8, the catalytic converter for cylinders 1 to 4 also needs to be removed.

Release the nuts (1) at the bottom on the catalytic converter for cylinders 5 to 8.
Loosen catalytic converter from holder.

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Release the nuts (1) at the bottom on the catalytic converter for cylinders 1 to 4.
Loosen catalytic converter from holder.

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Loosen clamp (1) and remove.
Loosen clamp (2) and remove.

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Loosen screws (1) .
Loosen screws (2) .
Loosen screw (3) .
Remove holder (4) .

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Loosen screws (1) .
Loosen screws (2) .
Loosen screw (3) .
Remove holder (4) .

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Lift catalytic converter for cylinders 1 to 4 (1) upwards.

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Unscrew catalytic converter for cylinders 1 to 4 (1) upwards and remove.

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Lift catalytic converter for cylinders 5 to 8 (1) upwards.

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Unscrew catalytic converter for cylinders 5 to 8 (1) upwards and remove.

Courtesy of BMW OF NORTH AMERICA, INC.