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

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW X5, 2006 BMW X3, 2005 BMW X5, 2005 BMW X3, and 2004 BMW X5. 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.

Fig 1: Checking Flatness Of Cylinder Head Sealing Surface

Courtesy of BMW OF NORTH AMERICA, INC.

Deviation from flatness max. 0.05 mm.

NOTE: Machining limit. Refer to ENGINE - TECHNICAL DATA .

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.