Installing both exhaust manifolds

• Replace stud bolts (arrows).

  Parts:  Stud bolts

• Tighten stud bolts (arrows).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Stud bolt on cylinder head
  M8x50	Replace the stud bolt. tightening torque	20 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: RISK OF DAMAGE 
  Damage to the surface. 
  The use of metal-cutting tools (e.g., emery cloths) for cleaning surfaces can damage them and lead to leaks and/or engine damage. 

  • Do not use any metal-cutting tools.
  NOTE: To provide a better overview: Illustration of surrounding parts removed.
• Clean the sealing surfaces (1)  on the cylinder head using special tool 0 495 102 (11 4 470) .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace the seal (1)  .

  Parts:  Seal

  Courtesy of BMW OF NORTH AMERICA, INC.

• The installation position of the seal (1) must be adhered to. 

  The seal (1)  must be installed with the side of the bead (2)  (recess of the seal) facing the exhaust manifold (3)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Insert and install the exhaust manifold (2)  .
• Position the sliding rail (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: TECHNICAL INFORMATION 
  When assembling, it is essential to observe screwing sequences and tightening torques.
  Failure to comply with the regulations can lead to leaks and damage.
• Replace nuts (1)  to (8)  .

  Parts:  Nuts

• Tighten the nuts in the sequence (1)  to (8)  .
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Exhaust manifold to cylinder head
  M8 Replace nuts.	tightening torque	15 Nm

  Fig 1: Exhaust Manifold Nuts Tightening Sequence

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING FRONT HEAT SHIELD .
• Refer to INSTALLING ALTERNATOR .
• Refer to ATTACHING THE CHARGE AIR COOLER .
• Refer to INSTALLING THE RIGHT TANK VENT VALVE .
• Refer to INSTALLING LEFT TANK VENT VALVE .
• Refer to INSTALLING DRIVE BELT .
• Refer to INSTALLING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
• Refer to INSERTING THE EXHAUST TURBOCHARGER FOR THE CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE EXHAUST TURBOCHARGER FOR THE CYLINDERS 1 TO 4 .
• Refer to INSTALLING THE INTAKE PIPE OF THE ENGINE VENTILATION LINE .
• Refer to INSTALLING LEFT CLEAN AIR PIPE .
• Refer to INSTALLING RIGHT CLEAN AIR PIPE .
• Refer to INSTALLING THE LEFT ENGINE VENTILATION LINE (PARTIALLY REMOVED) .
• Refer to PARTIALLY INSTALLING THE RIGHT ENGINE VENTILATION LINE .
• Refer to CONNECTING THE RIGHT CHARGE AIR LINE TO THE EXHAUST TURBOCHARGER .
• Refer to CONNECTING THE LEFT CHARGE AIR LINE TO THE EXHAUST TURBOCHARGER .
• Refer to INSTALLING THE CARRIER PLATE .
• Refer to INSTALLING THE CATALYTIC CONVERTER OF CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE RIGHT OXYGEN SENSOR MONITOR .
• Refer to INSTALLING THE LEFT OXYGEN SENSOR MONITOR .
• Refer to INSTALLING HEAT SHIELD, TOP .
• Refer to INSTALLING THE LEFT INTAKE SILENCER BRACKET .
• Refer to INSTALLING THE LEFT LAMBDA OXYGEN SENSOR .
• Refer to INSTALLING THE RIGHT LAMBDA OXYGEN SENSOR .
• Refer to INSTALLING EXHAUST SYSTEM .
• Refer to INSTALLING THE LEFT AND RIGHT REAR DIFFUSER .
• Refer to INSTALLING THE REAR LEFT AND RIGHT TENSION STRUT .
• Refer to INSTALLING THE LEFT AND RIGHT UNDERSHIELD (TANK COVER) .
• Refer to CONNECTING THE COOLANT HOSES TO THE HIGH-TEMPERATURE COOLANT RADIATOR .
• Refer to INSTALLING FAN COWL .
• Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
• Refer to INSTALLING THE RIGHT AND LEFT UNFILTERED-AIR DUCT .
• Refer to INSTALLING BOTH INTAKE FILTER HOUSING .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to INSTALLING TENSION STRUT ON LEFT AND RIGHT SHOCK TOWER .
• Refer to INSTALLING UPPER CROSS CONNECTION .
• Refer to INSTALLING THE COVER IN THE ENGINE COMPARTMENT AT TOP LEFT AND RIGHT .
• Refer to INSTALLING FRONT UNDERBODY PROTECTION .
• Refer to FILLING THE HIGH-TEMPERATURE COOLANT CIRCUIT WITH THE VACUUM FILLING UNIT .
• Refer to VENTING THE HIGH-TEMPERATURE COOLANT SYSTEM .