Installing both exhaust manifolds

• Replace stud bolts (arrows).

  Parts:  Stud bolts

• Tighten stud bolts (arrows).

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  TIGHTENING TORQUES SPECIFICATION
  
  

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

  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.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Clean the sealing surfaces (1)  on the cylinder head using special tool 0 495 102 (11 4 470) .
• Replace the seal (1)  .

  Parts:  Seal

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• 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)  .

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• 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.
  Fig 1: Left Exhaust Manifold Nuts Tightening Sequence

  Courtesy of BMW OF NORTH AMERICA, INC.
• Replace nuts (1)  to (8)  .

  Parts:  Nuts

• Tighten the nuts in the sequence (1)  to (8)  .
  TIGHTENING TORQUES SPECIFICATION
  
  

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

Follow-up work 

• Refer to INSTALLING FRONT HEAT SHIELD .
• Refer to INSTALLING ALTERNATOR .
• Refer to ATTACHING THE CHARGE AIR COOLER .
• Refer to INSTALLING BOTH EXHAUST TURBOCHARGERS .
• Refer to INSTALLING THE CLEAN AIR PIPE OF CYLINDER BANK 2 .
• Refer to INSTALLING THE LEFT CHARGE AIR LINE .
• Refer to INSTALLING CLEAN AIR PIPE OF CYLINDER BANK 1 .
• Refer to INSTALLING THE RIGHT CHARGE AIR LINE .
• Refer to CLOSING THE HIGH-TEMPERATURE COOLANT CIRCUIT .
• Refer to INSTALLING THE UNDERBODY PROTECTION OF THE STEERING GEAR OR THE FRONT THRUST FIELD .
• Refer to INSTALLING FRONT UNDERBODY PROTECTION .
• Refer to INSTALLING THE BOTTOM FRONT RIGHT SIDE COVER .
• Refer to INSTALLING FAN COWL .
• Refer to INSTALLING DRIVE BELT .
• Refer to PARTIALLY FASTENING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
• Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
• Refer to INSTALLING UPPER CROSS CONNECTION .
• Refer to INSTALLING BOTH FRONT-END STRUTS .
• Refer to INSTALLING THE CENTER ENGINE COMPARTMENT COVER .
• Refer to INSTALLING THE CATALYTIC CONVERTER FOR CYLINDERS 5 TO 8 .
• 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 CENTER STIFFENING PLATE .
• Refer to INSTALLING TANK COVER ON LEFT AND RIGHT .
• 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 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 THE LUGGAGE COMPARTMENT WHEEL ARCH TRIM PANEL ON THE LEFT AND RIGHT (PARTIALLY REMOVED) .
• Refer to INSTALLING LOADING EDGE TRIM .
• Refer to INSTALLING LUGGAGE COMPARTMENT FLOOR COVERING .
• Refer to CONNECTING ALL BATTERY GROUND LEADS .
• Refer to FILLING AND VENTING THE HIGH-TEMPERATURE COOLANT CIRCUIT .