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Home >> BMW >> 2006 >> 323i Standard >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System - Repair - E90/91 >> 00 Exhaust system, complete >> 18 00 020 Removing and installing/replacing complete exhaust system (N52/N52K/N51)

18 00 020 Removing and installing/replacing complete exhaust system (N52/N52K/N51)

Special tools required: 

WARNING: Scalding hazard! 
These tasks should only be carried out on an exhaust system that has cooled down.
IMPORTANT: Removal of the exhaust system must be carried out with the assistance of a second person.

Support exhaust system with jack and special tool 31 2 220 and secure against falling out.

Fig 1: Identifying Special Tool (31 2 220)
G04725865Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts.

Installation: 

Replace self-locking nuts.

Replace seal.

Tightening torque 18 20 1AZ. Refer to 18 20 EXHAUST SYSTEM SUSPENSION .

Fig 2: Identifying Exhaust Manifold Self-Locking Nuts
G04725866Courtesy of BMW OF NORTH AMERICA, INC.

Release bolt and remove bracket (1).

Installation: 

Tightening torque 18 20 2AZ. Refer to 18 20 EXHAUST SYSTEM SUSPENSION .

Fig 3: Identifying Muffler Bracket Bolt
G04725867Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screw connection.

Installation: 

Tightening torque 18 20 3AZ. Refer to 18 20 EXHAUST SYSTEM SUSPENSION .

Fig 4: Identifying Bracket To Rear Differential Screw
G04725868Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten nut.

Installation: 

Tightening torque 18 20 4AZ. Refer to 18 20 EXHAUST SYSTEM SUSPENSION .

Fig 5: Identifying Rear Muffler Bracket Nut
G04725869Courtesy of BMW OF NORTH AMERICA, INC.

Release screw on right bracket.

Installation: 

Tightening torque 18 20 5AZ. Refer to 18 20 EXHAUST SYSTEM SUSPENSION .

Fig 6: Identifying Rear Muffler To Body Screw
G04725870Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts along line and remove reinforcement plate (1).

Lower exhaust system and remove.

Fig 7: Identifying Reinforcement Plate
G04725871Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Check exhaust system for leaks.