Installing the catalytic converter for cylinders 5 to 8

• Replace seals on exhaust turbocharger.

  Parts:  Seals

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

  Courtesy of BMW OF NORTH AMERICA, INC.

• 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.

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• Replace clamps (1)  and (2)  .

  Parts:  Clamps

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

  The circlips (1)  and (2)  must be mounted with the screw connection to the inside.

  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

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

  Parts:  Screws

• Tighten down screws (1)  .
  TIGHTENING TORQUES SPECIFICATION
  
  

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

  Courtesy of BMW OF NORTH AMERICA, INC.

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

  Parts:  Nuts

• Tighten nuts (1)  .
  TIGHTENING TORQUES SPECIFICATION
  
  

  Catalytic converter to holder
  M8 Nut Replace nut.	tightening torque	23 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 ATTACHING 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 .
• Refer to INSTALLING EXHAUST SYSTEM .
• Refer to INSTALLING REAR BUMPER PANEL .
• Refer to INSTALLING BOTH EXHAUST COVERS .
• Refer to INSTALLING THE REAR BUMPER TRIM .
• Refer to INSTALLING THE REAR DIFFUSER .
• Refer to IF INSTALLED: INSTALLING THE REAR AXLE COVER .
• Refer to INSTALLING THE TORSION STRUT ON THE REAR LEFT AND RIGHT .
• Refer to INSTALLING THE CONNECTING SUPPORTS ON THE TUNNEL .
• Refer to INSTALLING THE UNDERBODY PLANKING OF THE TRANSMISSION ON THE SIDE .
• Refer to INSTALLING THE TAIL LIGHT ON THE LEFT AND RIGHT SIDE PANELS .
• Refer to INSTALLING COVER FOR WATER CHANNEL ON LEFT AND RIGHT .
• Refer to INSTALLING LUGGAGE COMPARTMENT WHEEL ARCH TRIM PANEL LEFT AND RIGHT PARTIALLY .
• Refer to INSTALLING THE TOP LUGGAGE COMPARTMENT TRIM PANEL .
• Refer to INSTALLING TRUNK COMPARTMENT LIGHT .
• Refer to INSTALLING LOADING EDGE TRIM .
• Refer to INSTALLING LUGGAGE COMPARTMENT FLOOR COVERING .