This may assist you.
This is for an M112.942 (just presuming this is what you have in your suv) - for the crankcase
Mercedes-Benz EPC. M 112.942 M - Engine, GASOLINE ENGINE, Market Europe, North America, Japan, Group ENGINE HOUSING, Schema of CYLINDER CRANKCASE.
Car, Mercedes-Benz M 112.942 M - Engine, GASOLINE ENGINE, Market Europe, North America, Japan, Group ENGINE HOUSING, Schema of CYLINDER CRANKCASE. Mercedes-Benz Free VIN Search and Part number search. All parts grouped into categories and subcategories with diagrams.