Removing the catalytic converter for cylinders 1 to 4

WARNING: Hot surfaces .
Risk of burning!

Perform all work only on components that have cooled down.

WARNING: Vehicle may slip off the vehicle hoist if the vehicle hoist is handled incorrectly .
Danger! Immobilization period-threatening injuries!

Observe safety instructions on raising the vehicle using a vehicle hoist.
For additional information see: RAISING THE VEHICLE WITH A VEHICLE LIFT .

Preliminary work

Refer to REMOVING LUGGAGE COMPARTMENT FLOOR COVERING .
Refer to REMOVING THE LOADING EDGE TRIM .
Refer to PARTIALLY REMOVING THE LUGGAGE COMPARTMENT WHEEL ARCH TRIM PANEL ON THE LEFT AND RIGHT .
Refer to REMOVING THE COVER FOR THE WATER CHANNEL LEFT AND RIGHT .
Refer to REMOVING THE TAIL LIGHT ON THE LEFT AND RIGHT SIDE PANEL .
Refer to REMOVING THE REAR DIFFUSER .
Refer to REMOVING REAR BUMPER TRIM .
Refer to REMOVING BOTH EXHAUST COVERS .
Refer to REMOVING REAR BUMPER PANEL .
Refer to REMOVING TANK COVER ON LEFT AND RIGHT .
Refer to REMOVING CENTER STIFFENING PLATE .
Refer to REMOVING EXHAUST SYSTEM .
Refer to REMOVING THE RETAINING BRIDGE .
Refer to PARTIALLY REMOVING THE LEFT LAMBDA OXYGEN SENSOR .
Refer to PARTIALLY REMOVING THE LAMBDA OXYGEN SENSOR .
Refer to REMOVING THE LEFT OXYGEN SENSOR MONITOR .
Refer to REMOVING THE RIGHT OXYGEN SENSOR MONITOR .
Refer to REMOVING UPPER HEAT SHIELD .
Refer to REMOVING THE LEFT HEAT SHIELD .
Refer to REMOVING RIGHT HEAT SHIELD .
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 WINDSHIELD PANEL COVER .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE COWL UPPER PART IN THE CENTER .
Refer to LIFTING THE HEAT SHIELD .

For equipment specification without SA1 DC gasoline particulate filter

WARNING: Hot exhaust system .
Risk of burning!

Any work must exclusively be carried out with an exhaust system that has cooled down.

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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Loosen circlip (1) and remove.

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

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Lift the catalytic converter for the cylinders 1 to 4 (1) to the top.

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Screw out and remove the catalytic converter for the cylinders 1 to 4 (1) .

Courtesy of BMW OF NORTH AMERICA, INC.