Necessary preliminary tasks

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E91/E92/E93 only: Remove tension strut on rear axle.

Support front muffler with special tool 31 2 220 .

Fig 1: Supporting Front Muffler Using Special Tool (31 2 220)

G04742070

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: If the cutting line is not marked by a punch mark in the pipe, determine the cutting line by means of the pipe length on the new front muffler (1).
Carry over cutting line to faulty front muffler (1) and mark out.

Fig 2: Identifying Faulty Front Muffler With Cutting Line

G06901320

Courtesy of BMW OF NORTH AMERICA, INC.

Cut exhaust pipe at marked point with special tool 00 2 210 and deburr.

Fig 3: Cutting Exhaust Pipe Using Special Tool (00 2 210)

G04742078

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts.

Installation:

Replace self-locking nuts.

Replace seal.

Tightening torque 18 20 1AZ .

Fig 4: Locating Self-Locking Nuts

G05758981

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolt and remove bracket (1).

Tightening torque 18 20 2AZ .

Fig 5: Locating Bracket Bolt

G05777756

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screw connection.

Installation:

Tightening torque 18 20 3AZ .

Fig 6: Locating Bracket Screw

G05476210

Courtesy of BMW OF NORTH AMERICA, INC.

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

Lower front muffler and remove.

Fig 7: Identifying Reinforcement Plate

G05502234

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Connect front muffler to rear muffler by means of clamp and align.

Centre clamp and tighten down.

Tightening torque 18 20 8AZ .

Fig 8: Identifying Centre Clamp

G04742097

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check exhaust system for leaks.