18 12 050 Replacing left or right center silencer (S63)

WARNING: This page is about a different car, the 2013 BMW X5 M, 2012 BMW X5 M, 2011 BMW X5 M, and 2010 BMW X5 M. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

31 2 220

WARNING: Risk of burns!
Only perform these tasks after exhaust system has cooled down.

Support center silencer with special tool 31 2 220 and a suitable universal lifter.

Fig 1: Supporting Centre Silencer Using Special Tool (31 2 220)

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: If the separation point is not marked by a punch mark on the pipe, determine the separation point by means of the pipe length on the new center silencer.

Carry over separation point to faulty center silencer (1) or (2) and mark out.

Secure center silencer against falling off.

Cut through exhaust pipes at marked point with a suitable tool.

Fig 2: Identifying Silencers

Courtesy of BMW OF NORTH AMERICA, INC.

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

Unscrew nuts (1).

Tightening torque 18 31 1AZ .

Replace self-locking nuts and seals.

Fig 3: Identifying Exhaust System Mounting Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Only if the right-hand center silencer is replaced.

Release screws (1).

Tightening torque 18 20 1AZ .

Lower and remove right-hand center silencer with assistance of a second person.

Fig 4: Identifying Exhaust System Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Only if the left-hand center silencer is replaced.

Release screws (1).

Tightening torque 18 20 2AZ .

Lower and remove left-hand center silencer with assistance of a second person.

Fig 5: Identifying Exhaust System Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Adjust center silencer to fit and connect with clamps.

Centre clamp and tighten down.

Tightening torque 18 31 6AZ .

The procedure is identical on both sides.

Fig 6: Identifying Silencer With Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check exhaust system for leaks.