Install the catalytic converter for cylinders 5 to 8

• Replace seals on exhaust turbocharger.

  Parts:  Seals

• Guide in catalytic converter for cylinders 5 to 8 (1) in arrow direction and install.
• Connect catalytic converter for cylinders 5 to 8 (1) to exhaust turbocharger.

  Courtesy of BMW OF NORTH AMERICA, INC.

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

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace clamp (1) and (2).

  Parts:  Clamps

• Mount clamps (1) and (2) and tighten.

  The clamps must be mounted with the screw connection inwards.

  TIGHTENING TORQUES SPECIFICATION
  
  

  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 TORQUES SPECIFICATION
  
  

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

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten down screws (2).
  TIGHTENING TORQUES SPECIFICATION
  
  

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

• Tighten down screw (3).
  TIGHTENING TORQUES SPECIFICATION
  
  

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

• Install holder (4).
• Tighten down screws (1).
  TIGHTENING TORQUES SPECIFICATION
  
  

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

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten down screws (2).
  TIGHTENING TORQUES SPECIFICATION
  
  

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

• Tighten down screw (3).
  TIGHTENING TORQUES SPECIFICATION
  
  

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

• Mount catalytic converter for cylinders 1 to 4 on the holder.
• Replace screws (1).

  Parts:  screws.

• Tighten down screws (1).

  Courtesy of BMW OF NORTH AMERICA, INC.

  TIGHTENING TORQUES SPECIFICATION
  
  

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

• Mount catalytic converter for cylinders 5 to 8 on the holder.
• Replace nuts (1).

  Parts:  Nuts

• Tighten nuts (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to ALIGNING THE VACUUM PUMP FOR THE CAMSHAFT .
• Refer to REPLACING THE O-RING OF THE VACUUM PUMP .
• Refer to INSTALLING THE VACUUM PUMP .
• Refer to BENDING THE HEAT SHIELD TO THE FRONT .
• Refer to INSTALL RIGHT HEAT SHIELD .
• Refer to INSTALL LEFT HEAT SHIELD .
• Refer to TIGHTEN SCREW BETWEEN THE LEFT AND RIGHT HEAT SHIELD .
• Refer to INSTALL HEAT SHIELD, TOP
• Refer to INSTALL ENGINE VENTILATION LINE
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR AND THE MONITORING OXYGEN SENSOR FOR CYLINDERS 1 TO 4 .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR AND THE MONITORING OXYGEN SENSOR FOR CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE CENTER COWL UPPER PART .
• Refer to INSTALL TENSION STRUT ON SHOCK TOWER .
• Refer to INSTALLING WINDSHIELD PANEL COVER .
• Refer to INSTALL THE FRONT HOOD SEAL AT THE REAR .
• Refer to INSTALL LEFT AND RIGHT WIPER ARM .
• Refer to INSTALL THE REAR RIGHT ENGINE COMPARTMENT COVER .
• Refer to INSTALLING INTAKE FILTER HOUSING .
• Refer to INSTALL ACOUSTIC COVER .
• Refer to INSTALL THE COVER OF THE ENGINE COMPARTMENT ON THE REAR LEFT .
• Refer to INSTALL EXHAUST SYSTEM .
• Refer to INSTALL THE CONNECTING SUPPORTS ON THE TUNNEL .