Necessary preliminary work

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Remove both INTAKE FILTER HOUSINGS .
Remove both control sensors. See LEFT CONTROL SENSOR and RIGHT CONTROL SENSOR .

Release screws (1).

Lift out holder.

Fig 1: Identifying Holder Screws

G06888851

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (2).

Tightening torque 11 65 3AZ .

Fig 2: Identifying Screws And Heat Shield

G06888852

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (2).

Tightening torque 11 65 3AZ .

Fig 3: Identifying Screws And Heat Shield

G06888853

Courtesy of BMW OF NORTH AMERICA, INC.

Release retaining clip (1).

Detach wire ring (2) and set down behind oxygen sensor.

Fig 4: Identifying Retaining Clip And Wire Ring

G06888854

Courtesy of BMW OF NORTH AMERICA, INC.

Release retaining clip (1).

Detach wire ring (2) and set down behind oxygen sensor.

Fig 5: Identifying Oxygen Sensor With Wire Ring And Retaining Clip

G06888855

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 11 65 3AZ .

NOTE: For purposes of clarity, the graphic shows the oxygen sensor removed.

Fig 6: Identifying Screws

G06888856

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 11 65 3AZ .

Lift out heat shield.

Fig 7: Identifying Heat Shield Screws

G06888857

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.