18 12 050 Replacing left or right center silencer (N63)

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

Special tools required:

31 2 220

WARNING: Risk of burning!
This repair work may only be carried out on an exhaust system which has cooled down.

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

Fig 1: Supporting Center Silencer Using Special Tool

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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 Exhaust Pipes Mark

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Version 1:

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 Nuts

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Version 2:

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

Release clamp (1).

Tightening torque: 18 31 1AZ .

Fig 4: Identifying Clamp

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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 5: Identifying Screws Of Center Silencer (Right)

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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 6: Identifying Center Silencer Screws (Left)

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Installation note:

Adjust center silencer to fit and connect with clamps.

Center clamp and tighten down.

Tightening torque: 18 31 5AZ .

The procedure is identical on both sides.

Fig 7: Identifying Center Clamp

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NOTE: Check exhaust system for leaks.