Notes on assigning the cylinder head gaskets - AH01.30-P-1000-06PI
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 Mercedes-Benz ML350, 2010 Mercedes-Benz ML350, 2009 Mercedes-Benz ML320, 2009 Mercedes-Benz GL320, and 2008 Mercedes-Benz ML320. However, it is still accessible from the selected car via links, so may be relevant.
Assignment of valid cylinder head gaskets to the corresponding engine is, also in the case of mounted cylinder heads, recognizable on the right cylinder head gasket (2). The cylinder head gasket (2) with a closed hole (1) is to be used for vehicles with vacuum pump. The cylinder head gasket (2) with open hole (1) is to be used for vehicles without a vacuum pump.
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.