Install catalytic converter

• Replace seal (1) on catalytic converter.

  Parts:  Seal

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace the V-clip (1).

  Parts:  V-band clamp

  Courtesy of BMW OF NORTH AMERICA, INC.

• Guide in and install catalytic converter (3).
• Replace nuts (2).

  Parts:  Nuts

• Hand-tighten nuts (2).
• Replace the V-clip (1).

  Parts:  V-band clamp

• Feed in and install V-band clamp (1).
• Position V-ribbon clip (1) and tighten.
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  V-ribbon clip of catalytic converter to exhaust turbocharger
  V-band clamp Replace V-band clamp.	Tightening torque	13 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten nuts (2).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Catalytic converter to holder
  M8 Replace nuts.	Tightening torque	19 Nm

• Feed in rubber mount (1) at catalytic converter and install.

  Courtesy of BMW OF NORTH AMERICA, INC.

  If installed: Installing the differential pressure sensor with the pressure line 

• Use the special tool 5 A19 557  for tightening the union nut.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Version A 

  Feed in and install the pressure line (2) in the holder (3).

  Tighten the union nut (1) with the special tool 5 A19 557 

  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Pressure line on catalytic converter
  Coupling nut	Tightening torque	20 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Version B 

  Feed in and install the pressure line (2) in the holder (3).

  Tighten the union nut (1) with the special tool 5 A19 557 

  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Pressure line on catalytic converter
  Coupling nut	Tightening torque	20 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Guide in and install differential pressure sensor (4).
• Tighten down screw (3).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Differential pressure sensor to holder
  screw	Tightening torque	4 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace pressure hose (2)

  Parts:  Pressure hose

• Connect pressure hose (2) to differential pressure sensor (4).
• Connect connectors (1) and lock.

  The connector (1) must engage audibly.

• Guide in and install cover (2).
• Lock the detents (1).

  The detents (1) must engage audibly.

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING THE COMPLETE EXHAUST SYSTEM .
• Refer to INSTALLING THE CROSS-MEMBER ON THE REAR AXLE .
• Refer to INSTALLING CONNECTING SUPPORT OF THE TUNNEL AT FRONT AND REAR .
• Refer to INSTALLING UNDERBODY PROTECTION AT REAR .
• Refer to INSTALLING FRONT UNDERBODY PROTECTION .
• Refer to INSTALLING THE OXYGEN SENSOR MONITOR
• Refer to INSTALLING LAMBDA OXYGEN SENSOR .
• Refer to INSTALLING CLEAN AIR PIPE .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to INSTALLING SECOND UPPER BULKHEAD .
• Refer to INSTALLING THE RIGHT WINDSHIELD PANEL COVER .
• Refer to INSTALLING THE BATTERY COVER
• Refer to INSTALLING THE LEFT WINDSHIELD PANEL COVER .
• Refer to INSTALLING THE REAR HOOD SEAL .
• Refer to INSTALLING LEFT AND RIGHT WIPER ARM .