C3.4B Industrial Engine Caterpillar

Caterpillar dealers need all of these numbers in order to determine the components that were included with the engine. This information permits accurate identification of replacement part numbers.

The numbers for fuel setting information for electronic engines are stored within the flash file. These numbers can be read by using the electronic service tool.

Serial Number location

Illustration 1	g02474416
Typical example of a non-stressed cylinder block

The engine serial number can be installed in three different positions.

All engines will have the serial number install in location (1) on the front face of the engine.

On a non-stressed cylinder block the serial number is located in position (2). On the left-hand side on the cylinder block.

Illustration 2	g02832639
Typical example

On a stressed cylinder block the serial number is located in position (3).

The engine serial number will be stamped on the emissions plate.