Install exhaust system

Courtesy of BMW OF NORTH AMERICA, INC.

• Variant with ribbon clamp: 

  Open the weld seam (1) with a conventional tool.

• Remove ribbon clamp (2).
• Replace the (2) ribbon clamp.

  Parts:  Ribbon cable clamp

  NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.
• Check all rubber mounts (1) of the exhaust system for damage and replace, if necessary.

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: TECHNICAL INFORMATION 
  Conduct the following operation with the assistance of a second person.
• Variant with double-flow exhaust system: 

  Insert and install the exhaust system (1) with the help of a support person.

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: TECHNICAL INFORMATION 
  Conduct the following operation with the assistance of a second person.
• Variant with single-flow exhaust system: 

  Have someone help you insert and install the exhaust system (1).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace nut (1).

  Parts:  Nut

• Tighten nut (1).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Rear silencer to body/bumper support
  M8 Replace nuts.	Tightening torque	19 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace nut (1).

  Parts:  Nut

• Tighten nut (1).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Rear silencer to body/bumper support
  M8 Replace nuts.	Tightening torque	19 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Variant with dual-branch exhaust system: 

  Replace screws (1).

  Parts:  Screws

  Tighten down screws (1).

  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Exhaust system to rear axle carrier
  M8x25 Replace screw.	tightening torque	28 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace nut (1).

  Parts:  Nut

• Tighten nut (1).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Front pipe/front silencer/gasoline particulate filter to the transmission holder
  M8 Replace nut.	tightening torque	19 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• If fitted: 

  Screw in and tighten the exhaust temperature sensor (1) and (2).

  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Exhaust-gas temperature sensor to exhaust system
  	tightening torque	30 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten the ribbon clamp (1).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Exhaust system to catalytic converter
  Ribbon clamp nut M8 Replace the ribbon clamp.	tightening torque	26 Nm
  Ribbon clamp nut M10 Replace the ribbon clamp.	tightening torque	55 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Version with V ribbon clip: 

  Replace V-band clamp.

  Parts:  V-band clamp

  Unscrew the nut (1) and remove the sealing ring (2).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Bend all the sheet metal tabs, except those in the marked area, all around using a suitable tool.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Connect the exhaust system (1) with the catalytic converter (2) and position it correctly (arrow).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Make sure that, after mounting, the V-ribbon clip is on the sheet metal tabs in the marked areas.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Mount the V-clip (1) on the sealing ring (2).
• Make sure that the V-ribbon clip is (1) correctly positioned on the sealing ring (2).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Make sure that V-clip (1) is fitted correctly
• Tighten down screw (2).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  V-ribbon clip to catalytic converter
  V-ribbon clip Replace V-ribbon clip	tightening torque	25 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Connect connectors (1) and lock.

  The connector (1) must engage audibly.

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING THE LEFT AND RIGHT REAR DIFFUSER .
• Refer to INSTALLING THE TENSION STRUT AT THE RIGHT REAR AND IF NECESSARY, ON THE LEFT SIDE .