Removing and installing/sealing throttle body (B46/B48 4-Cyl. Engine) (4' Series Coupe/Convertible, 4' Series Gran Coupe Sedan)

Necessary preliminary tasks: 

• Remove ACOUSTIC COVER .
• Remove DESIGN COVER .
• Release CHARGE AIR LINE (do not remove)  .

Removal: 

Release screw (1).

Loosen the screws along the arrows.

Unlock and disconnect plugs (2).

Feed out and remove throttle body (3).

Courtesy of BMW OF NORTH AMERICA, INC.

Preparation for installation: 

Replace sealing ring (1).

Part:  Sealing ring

Courtesy of BMW OF NORTH AMERICA, INC.

Replace sealing ring (1).

Part: Sealing ring

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Connect connector (2) and lock.

Connector (2) must snap audibly into place.

Guide in throttle valve fitting (3) and install.

Tighten screws along arrows.

Tightening torque 13 54 1AZ .

Tighten screw (1).

Tightening torque 13 54 2AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: 

• Re-fasten CHARGE AIR LINE .
• Install the ACOUSTIC COVER .
• Install DESIGN COVER .