Notes on position of engine number - AH01.00-P-0001-01D
ENGINE 112, 113, 120, 137, 271, 272, 273, 275, 285, 628, 629, 642, 651
Shown on engine 275
Courtesy of MERCEDES-BENZ USA
The engine number is located on the upper right transmission flange
On OM 642 the engine number is located at the front left on the cylinder crankcase below the high-pressure pump
On OM 651 the engine number is located on the left side on the cylinder crankcase below the vacuum pump