Install exhaust system

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2023 BMW M5, 2022 BMW M5, 2021 BMW M5, 2020 BMW M5, and 2019 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Component with heavy weight .
Injury hazard!

Note component's center of gravity.
Support component using a jack.
Secure component against falling off the jack.

CAUTION: Heavy component .
Heavy components can lead to injury or damage .

Remove and install heavy components with the aid of another person/other persons.

NOTE: TECHNICAL INFORMATION
Check the exhaust system for tightness after installation.

NOTE: TECHNICAL INFORMATION
Mount the exhaust system in a de-energized state, following the tightening sequence from the rear silencer towards the exhaust manifold.

NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.

Check all rubber mounts (1) of the exhaust system for damage and replace, if necessary.

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
Conduct the following operation with the assistance of a second person.

Insert and install the exhaust system with the help of another person.
Replace nuts (1).

Parts: Nuts

Tighten nuts (1).

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUES SPECIFICATION

Rear silencer on support
Nut M8 Replace nut.	tightening torque	19 Nm

Position the holder of the exhaust system (2).

NOTE: The following step(s) must be performed if the listed component(s) is/are installed.

Position the ground strap.

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The following step(s) must be performed if the listed component(s) is/are installed.

Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Exhaust bracket
M8 screw	Tightening torque	28 Nm

Tighten down screw (3).

TIGHTENING TORQUES SPECIFICATION

Exhaust bracket
M8 screw	Tightening torque	28 Nm

Position the holder of the exhaust system (2).
Tighten down screw (1).

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUES SPECIFICATION

Exhaust bracket
M8 screw	Tightening torque	28 Nm

Execution with RDE2:

Replace the seals (1).

Parts: Seals

Courtesy of BMW OF NORTH AMERICA, INC.

Position exhaust system.
Replace nut (1).

Parts: Nut

Tighten nut (1).

TIGHTENING TORQUES SPECIFICATION

Exhaust bracket to transmission
Nut M8 Replace nuts.	Tightening torque	19 Nm

Replace nuts (2).

Parts: Nuts

Tighten nuts (2).

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUES SPECIFICATION

Exhaust system to catalytic converter
Nut M8 Replace nuts.	Tightening torque	10 Nm
	Tightening torque	28 Nm

Replace nut (1).

Parts: Nut

Tighten nut (1).

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUES SPECIFICATION

Exhaust bracket to transmission
Nut M8 Replace nuts.	Tightening torque	19 Nm

Replace nuts (2).

Parts: Nuts

Tighten nuts (2).

TIGHTENING TORQUES SPECIFICATION

Exhaust system to catalytic converter
Nut M8 Replace nuts.	Tightening torque	10 Nm
	Tightening torque	28 Nm

Execution without RDE2:

Position exhaust system.

If necessary, replace clamp (2).

Parts: Circlip

Tighten nuts (1).

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUES SPECIFICATION

cl .
Tightening torque		55 Nm

Grease the thread on the exhaust system with high-temperature assembly paste.

CONSUMABLE SPECIFICATION

High-temperature assembly paste

10 g, Tube

83230309003

Clip the pressure line (2) into the holder (1).
Tighten the union nuts (3).

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUES SPECIFICATION

Pressure line union nut
Pressure line union nut	Tightening torque	40 Nm

Grease the thread on the exhaust system with high-temperature assembly paste.

CONSUMABLE SPECIFICATION

High-temperature assembly paste

10 g, Tube

83230309003

Clip the pressure line (2) into the holder (1).
Tighten the union nuts (3).

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUES SPECIFICATION

Pressure line union nut
Pressure line union nut	Tightening torque	40 Nm

Connect connectors (2) and lock.
Clip in connector (3) on the holder.
Clip the oxygen sensor cable (1) into the clamps.

Courtesy of BMW OF NORTH AMERICA, INC.

Connect connectors (2) and lock.
Clip in connector (3) on the holder.
Clip the oxygen sensor cable (1) into the clamps.

Courtesy of BMW OF NORTH AMERICA, INC.

Variant with exhaust temperature sensors:
Tighten exhaust temperature sensors upstream of the gasoline particulate filter (2).

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUES SPECIFICATION

Exhaust temperature sensor for gasoline particulate filter
Coupling nut	Tightening torque	30 Nm

Tighten exhaust temperature sensors downstream of the gasoline particulate filter (1).

TIGHTENING TORQUES SPECIFICATION

Exhaust temperature sensor for gasoline particulate filter
Coupling nut	Tightening torque	30 Nm

Connect connector (1).
Lock connector (1) to exhaust flap (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Connect connector (1).
Lock connector (1) to exhaust flap (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING THE AIR GUIDE PLATE .

Installing the rear tunnel connecting support.

Courtesy of BMW OF NORTH AMERICA, INC.

Position the connecting support (3) on the rear of the tunnel.

Tighten the screws (1).

TIGHTENING TORQUES

Rear connecting support tunnel to body
M8x30	Snug torque Angle of rotation	28Nm 90°

Tighten screws (2).

TIGHTENING TORQUES

Undershield
Hexagon screw	tightening torque	2.6Nm
Plastic nut	tightening torque	2.6Nm

Refer to INSTALLING THE REINFORCEMENT STRUT .
Refer to INSTALLING UNDERSHIELD ON THE FUEL TANK ON THE RIGHT .
Refer to INSTALLING THE UNDERSHIELD ON THE LEFT FUEL TANK .
Refer to INSTALLING THE REAR DIFFUSER .