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

Follow-up work 

• Refer to INSTALLING RIGHT HEAT SHIELD .
• Refer to INSTALLING LEFT HEAT SHIELD .
• Refer to TIGHTENING SCREW BETWEEN THE LEFT AND RIGHT HEAT SHIELD .
• Refer to INSTALLING HEAT SHIELD, TOP .
• Refer to INSTALLING THE RIGHT-HAND ENGINE VENTILATION LINE AND THE CRANKCASE VENTILATION INTAKE PIPE .
• Refer to INSTALLING THE LEFT ENGINE VENTILATION LINE .
• Refer to INSTALLING THE RIGHT MONITORING OXYGEN SENSOR .
• Refer to MOUNTING THE HEAT PROTECTION WIRE RING OF THE LEFT OXYGEN SENSOR MONITOR .
• Refer to INSTALLING THE RIGHT UNFILTERED-AIR DUCT .
• Refer to INSTALLING COVER FOR THE RIGHT DME CONTROL UNIT .
• Refer to INSTALLING THE TENSION STRUT ON THE RIGHT SHOCK TOWER .
• Refer to INSTALLING INTAKE FILTER HOUSING .
• Refer to INSTALLING THE RIGHT STRUT BRACE
• Refer to INSTALLING THE STRUT BRACE .
• Refer to INSTALLING THE RIGHT LAMBDA OXYGEN SENSOR .
• Refer to INSTALLING THE LEFT LAMBDA OXYGEN SENSOR .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to INSTALLING EXHAUST SYSTEM .
• Refer to INSTALLING THE STIFFENING PLATE .
• Refer to INSTALLING THE LEFT AND RIGHT REAR DIFFUSER .
• Refer to INSTALLING THE REAR LEFT AND RIGHT TENSIONING STRUT .
• Refer to INSTALLING THE LEFT AND RIGHT UNDERSHIELD (TANK COVER) .