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

WARNING: This page is about a different car, the 2005 BMW Z4, 2004 BMW Z4, and 2003 BMW Z4. 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 Sealing Surface

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Machining limit.

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.