18 00 020 Removing and installing complete exhaust system (N55)

Special tools required: 

• 31 2 220

Danger of injury! 

Removal of the exhaust system must be carried out with the assistance of a second person.

Necessary preliminary tasks: 

• F11 only: 

Remove trailing link on left and right.

Support exhaust system with special tool 31 2 220.

Fig 1: Supporting Exhaust System Using Special Tool (31 2 220)

Courtesy of BMW OF NORTH AMERICA, INC.

Release clamp (1).

Tightening torque 18 31 1AZ .

Fig 2: Identifying Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 18 31 4AZ .

Only if auxiliary heating fitted. Release screw (2) on metering pump.

Tightening torque 18 31 5AZ .

Release screws (3) on underbody panelling.

Remove reinforcement plate (4).

Fig 3: Identifying Reinforcement Plate, Underbody Panelling And Metering Pump Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Picture shows the left side, the procedure for the right side is identical.

Slacken nut (1).

Tightening torque 18 20 3AZ .

Fig 4: Identifying Exhaust System Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Picture shows the left side, the procedure for the right side is identical.

Slacken nut (1).

Tightening torque 18 31 3AZ .

Fig 5: Identifying Left/Right Rear Silencer Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Tightening torque 18 31 3AZ .

Lower and remove exhaust system with assistance of a second person.

Fig 6: Identifying Rear Silencer Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Check rubber mount for damage.

If necessary, replace damaged rubber mounts.

Check exhaust system for leak tightness.