11 12 101 Replacing cylinder head gasket (B48, B46)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2019 MINI Cooper, 2018 MINI Cooper, 2017 MINI Cooper, 2016 MINI Cooper, and 2015 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 4 470

Preliminary work needed:

Remove CYLINDER HEAD .
Check cylinder head for WATERTIGHTNESS
Check 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).

Fig 1: Blind Holes

G00554453

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Adapter Sleeves

G00554454

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation note:

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

Fig 3: Locating Head Gasket Part Number

G00554455

Courtesy of BMW OF NORTH AMERICA, INC.