Milling cylinder head sealing surface (B48 and B46 engines) (Cooper Clubman S and JCW)

Preliminary work needed: 

• Remove CYLINDER HEAD .
• Check CYLINDER HEAD FOR WATERTIGHTNESS 

Check evenness of cylinder head sealing surface with a standard straightedge (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Check evenness of cylinder head sealing surface with a standard straightedge (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: 

• Installing the CYLINDER HEAD