Removing the top left and top right catalytic converters

WARNING: This page is about a different car, the 2022 BMW X7, 2021 BMW X7, 2020 BMW X7, and 2019 BMW X7. However, it is still accessible from the selected car via links, so may be relevant.

Precondition

Ignition is switched off.
WARNING:
Hot surfaces .
Risk of burning!
- Perform all work only on components that have cooled down.

Preliminary work

Refer to REMOVING THE LEFT AND RIGHT UNDERSHIELD (TANK COVER) .
Refer to REMOVING THE REAR LEFT AND RIGHT TENSIONING STRUT .
Refer to REMOVING THE LEFT AND RIGHT REAR DIFFUSER .
Refer to REMOVING EXHAUST SYSTEM .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING LEFT INTAKE SILENCER HOUSING .
Refer to REMOVING RIGHT INTAKE SILENCER HOUSING .
Refer to REMOVING THE LAMBDA OXYGEN SENSOR .
Refer to REMOVING THE LEFT LAMBDA OXYGEN SENSOR .
Refer to REMOVING THE LEFT INTAKE SILENCER BRACKET .
Refer to REMOVING UPPER HEAT SHIELD .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE LEFT UNFILTERED-AIR DUCT .
Refer to REMOVING COVER FOR THE DME CONTROL UNIT ON LEFT .
Refer to REMOVING THE DME CONTROL UNIT FOR CYLINDERS 5 TO 8 .
Refer to REMOVING THE HOLDER FOR THE DME CONTROL UNIT ON THE LEFT .
Refer to REMOVING THE LEFT OXYGEN SENSOR MONITOR .
Refer to REMOVING BOTTOM CATALYTIC CONVERTERS OF CYLINDERS 1 THROUGH 4 AND 5 THROUGH 8 .
Refer to REMOVING THE LEFT AND RIGHT HEAT SHIELD .

WARNING: Hot exhaust system .
Risk of burning!

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

NOTE: RISK OF DAMAGE
Damage to the gasoline particulate filter .
Forcibly removing, installing or dropping the gasoline particulate filter down will damage it .

Remove and install the gasoline particulate filter without damaging it and without applying external force.
Avoid impacts/knocks to the gasoline particulate filter (e.g. by tools, falling down, hard contact with base).

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).

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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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Remove the catalytic converter (1) for the cylinders 5 to 8 in arrow direction.

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Unscrew and remove the catalytic converter (1) for the cylinders 5 to 8 in arrow direction.

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