1112101 Replacing cylinder head gasket (N51)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2010 BMW 328xi, 2010 BMW 328i, and 2009 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released.
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage).

Necessary preliminary tasks:

Remove CYLINDER HEAD .

Insert 11 4 430 PLUG special tool into bores.

Remove head gasket.

IMPORTANT: Check identification (1) on cylinder head gasket (N51).

Fig 1: Identifying Special Tool (11 4 430)

Courtesy of BMW OF NORTH AMERICA, INC.

There must be no fluids or contaminants in any of the threaded holes (1) for the cylinder head bolt connections.

IMPORTANT: Work on sealing surface on engine block and on cylinder head with special tool 11 4 470 TOOL only.
Do not use any metal-cutting tools.

Fig 2: Identifying Threaded Holes For Cylinder Head Bolt Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Identification (1) of head gasket.

IMPORTANT: Rubber coating (2) on cylinder head gasket must not under any circumstances be damaged (electrochemical corrosion).

Gasket (3) is a beaded metal gasket

Fig 3: Identifying Cylinder Head Gasket Identification Mark With Rubber Coating

Courtesy of BMW OF NORTH AMERICA, INC.

Check adapter sleeves (1) for damage and firm seating.

Place head gasket (2) in direction of arrow on engine block.

Fig 4: Placing Head Gasket

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check cylinder head for DEVIATION FROM FLATNESS .
Check cylinder head for WATER LEAKS .

Assemble engine.