11 12 719 Resurfacing cylinder head sealing surface (M52 / M52TU / M54 / M56)

WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. However, it is still accessible from the selected car via links, so may be relevant.

(Cylinder head dismantled)

Check flatness of cylinder head sealing surface with a commercially available straightedge.

Deviation from flatness max. 0.05 mm.

Fig 1: Checking Flatness Of Cylinder Head With Straightedge

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Machining limit. Refer to 11 12 CYLINDER HEAD WITH COVER M54 .

Fig 2: Identifying Machining Limit

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For compression comparison check, a repair cylinder head seal is provided.

Fig 3: Identifying Cylinder Head Seal

Courtesy of BMW OF NORTH AMERICA, INC.