Necessary preliminary work

Remove left INJECTION PIPE .
Remove THROTTLE VALVE
Release screws on intake plenum from above without fail before lowering front axle.
Secure ENGINE in installation position.
Lower front axle, releasing screws on engine mount first. See LOWERING/RAISING FRONT AXLE SUPPORT (UNIVERSAL LIFTER) .
Release power steering pump, if installed, and set aside. See POWER STEERING PUMP FOR HYDRAULIC STEERING GEAR WITH DYNAMIC DRIVE (N63)or POWER STEERING PUMP FOR POWER STEERING GEAR WITH ACTIVE FRONT STEERING (N63) .
Remove UNIVERSAL JOINT with corrugated tubing.

Detach engine ventilation hose (1).

Disconnect connector.

Unscrew nuts (2).

Tightening torque: 11 61 1 AZ .

Fig 1: Identifying Engine Ventilation Hose And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Release holder screw (2) on intake plenum.

Tightening torque: 11 61 2AZ .

Feed out intake plenum towards rear.

Installation note:

Replace all profile seals.

Fig 2: Identifying Throttle Valve And Holder Screw On Intake Plenum

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine and vehicle and

Check air intake system for leaks.