Replace the front silencer

Exhaust system 

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• If the separation point is not marked by a punch mark in the pipe, determine the separation point by means of the pipe length on the new front silencer.
• Carry over separation point to faulty front silencer and mark.
• Protect the front silencer (1) from falling.
• Cut through exhaust pipes at marked point with a suitable tool.

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• Loosen the clamp (1) on the left.

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• Loosen the clamp (1) on the right.
• Lower and remove front silencer with assistance of a second person.

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• Adjust the new front silencer (1) and connect it to the center silencer with clamps.

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• If necessary, replace clamp (1).
• Tighten the clamp (1) on the left.
  TIGHTENING TORQUES SPECIFICATION
  
  

  Exhaust system/front silencer to catalytic converter
  cl. If necessary, replace clamp.	Tightening torque	55 Nm

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• If necessary, replace clamp (1).
• Tighten the clamp (1) on the right.
  TIGHTENING TORQUES SPECIFICATION
  
  

  Exhaust system/front silencer to catalytic converter
  cl. If necessary, replace clamp.	Tightening torque	55 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Center the clamps (1) and tighten down.

Courtesy of BMW OF NORTH AMERICA, INC.