51 71 100 Replacing all cooling air routings for radiator

Necessary preliminary work: 

• REMOVE  support for front bumper panel
• Remove BOTTOM SUPPORT  for front bumper panel

Not in the case of 12-cylinder models: 

Undo screw connection (1) on V-braces (2).

Tightening torque 51 61 6AZ .

Fig 1: Identifying V-Support Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Only in the case of 12-cylinder models: 

Undo screw connection (2) on V-braces.

Tightening torque 51 61 6AZ .

Fig 2: Identifying V-Braces Screw Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Undo bolt (1) on V-brace (3) on left or right.

Tightening torque 51 11 7AZ .

Maneuver out V-support (3) upwards.

Unclip hose pipe (2) for headlight cleaning system at marked points and set down safely.

Installation note: 

Hose pipe (2) for headlight washer system high-pressure nozzle (right) must be correctly clipped into place at marked points.

Fig 3: Locating Cross-Struts, Hose Pipe & Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (2) on brake air duct (1).

Remove brake air duct (1) in direction of arrow.

Fig 4: Removing Brake Air Duct

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) on cross-member (2).

Tightening torque 51 11 2AZ .

Fig 5: Identifying Cross-Member Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) on vertical connection (2).

Remove vertical connection (2).

Tightening torque 51 11 2AZ .

Fig 6: Identifying Bumper Vertical Connection And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug connection (1) and disconnect.

Unfasten screws (2).

Feed out cooling air routing (3).

Fig 7: Identifying Cooling Air Routing, Plug Connection And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Make sure air intake duct (1) is correctly fitted on cooling air routing (2)

Fig 8: Identifying Air Intake Duct And Cooling Air Routing

Courtesy of BMW OF NORTH AMERICA, INC.