In the end, where is the serial number of the engine? In fact, the serial number printing position is very easy to find. Today Xiaobian uses the engine of Dongfeng Cummins as an example to teach everyone how to find out the position of the serial number printing quickly, accurately and accurately.
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First, the engine ISB3.9/5.9, QSB3.9/5.9, serial number printing position upper right end of the cylinder rear surface.
ISB3.9-160E40A serial number position map
Second, the engine ISDe4.5 / 6.7, QSB4.5 / 6.7, of course, according to the different parts installed, the serial number print position will be different, may be in the upper front or the upper right side of the cylinder.
In the upper left of the front of the cylinder 
At the top right of the cylinder front face
Third, the engine ISLe8.9\ISL9.5\ISC8.3\QSC\QSL\C\L, the serial number printing position is above the cylinder rear end surface.
6LTAA8.9-C220 serial number position diagram
Fourth, ISZ/QSZ engine serial number printing position above the cylinder intake side, located in the fourth, five cylinders in the middle position.
ISZ/QSZ engine serial number position diagram
5. In this mechanical B-series engine, the serial number print position is normally above the cylinder rear surface.
Mechanical B series engine serial number position map
You guys now understand where your engine serial number is printed.
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