11 12 101 Replacing cylinder head gasket (230i and 230i xDrive coupe/convertible)

Special tools required:

11 4 470

Necessary preliminary tasks:

Refer to REMOVING THE CYLINDER HEAD .
Refer to CHECKING CYLINDER HEAD FOR WATERTIGHTNESS .
Refer to CHECKING CYLINDER HEAD FOR DEVIATION FROM FLATNESS .

Remove remnants of oil and dirt from blind holes (1).

IMPORTANT: Work on sealing surface on engine block and on cylinder head with special tool 11 4 470 only.
Do not use any metal-cutting tools (e.g. emery cloth).

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

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The cylinder head gasket (1) can only be checked using the part number.

NOTE: If the cylinder head is remachined, a thicker gasket (+0.3 mm) is available for Service personnel.

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Required follow-up work:

Refer to INSTALLING THE CYLINDER HEAD