Installing the catalytic converter for cylinders 1 to 4

• Replace gasket on exhaust turbocharger.

  Parts:  Seal

• Guide in and install the catalytic converter (1)  for cylinders 1 to 4 in the arrow direction.
• Connect the catalytic converter (1)  for cylinders 1 to 4 to the exhaust gas turbocharger.

  Courtesy of BMW OF NORTH AMERICA, INC.

• If necessary, replace clamp (1)  .

  Parts:  cl

• Mount and tighten clamp (1)  .

  The circlip must be mounted with the screw connection on the inside.

  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Catalytic converter to exhaust turbocharger
  cl Replace clamp after disassembly.	Tightening torque	14 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Install holder (4)  .
• Tighten down screws (1).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Catalytic converter on cylinder head/cylinder head cover/holder
  M8x20	Tightening torque	21 Nm

• Tighten down screws (2)  .
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Catalytic converter on cylinder head/cylinder head cover/holder
  M8x20	Tightening torque	21 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten down screw (3)  .
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Catalytic converter on cylinder head/cylinder head cover/holder
  M8x20	Tightening torque	21 Nm

  • For equipment specification without SA1 DC gasoline particulate filter 
  WARNING: Hot exhaust system.
  Risk of burning!

  • Any work must exclusively be carried out with an exhaust system that has cooled down.
• Equipment specification without gasoline particulate filter 
• Mount the catalytic converter for the cylinders 1 to 4 on the holder.
• Replace screws (1)  .

  Parts:  Nuts

• Tighten down screws (1)  .
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Catalytic converter to holder
  M8x20 Replace screw.	Tightening torque	19 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to RELEASING THE HEAT SHIELD .
• Refer to INSTALLING THE CENTER COWL UPPER PART .
• Refer to INSTALLING TENSION STRUT ON SHOCK TOWER .
• Refer to INSTALLING WINDSHIELD PANEL COVER .
• Refer to INSTALLING LEFT AND RIGHT WIPER ARM .
• Refer to INSTALLING THE REAR RIGHT ENGINE COMPARTMENT COVER .
• Refer to INSTALLING THE COVER OF THE ENGINE COMPARTMENT ON THE REAR LEFT .
• Refer to INSTALLING RIGHT HEAT SHIELD .
• Refer to INSTALLING LEFT HEAT SHIELD .
• Refer to INSTALLING HEAT SHIELD, TOP .
• Refer to INSTALLING THE RIGHT OXYGEN SENSOR MONITOR .
• Refer to INSTALLING THE LEFT OXYGEN SENSOR MONITOR .
• Refer to PARTIALLY INSTALLING THE RIGHT LAMBDA OXYGEN SENSOR .
• Refer to PARTIALLY INSTALLING THE LEFT LAMBDA OXYGEN SENSOR .
• Refer to INSTALLING THE RETAINING BRIDGE IN VEHICLES WITH A GASOLINE PARTICULATE FILTER .
• Refer to INSTALLING THE RETAINING BRIDGE .
• Refer to INSTALLING EXHAUST SYSTEM .
• Refer to INSTALLING THE CONNECTING SUPPORTS ON THE TUNNEL .
• Refer to IF INSTALLED: INSTALLING THE TORSION STRUT ON THE RIGHT, AND ON THE LEFT WHERE REQUIRED .
• Refer to INSTALLING THE REAR DIFFUSER .