The engine code is represented by the eighth character in the VIN (see above).
The engine itself has an identification number normally indicating date and place of manufacture, displacement and serial number.
ID location will depend on engine type and year.
It will be stamped into a machined pad on the right side of the cylinder block between cylinders #3 and #4 on 2.5L engines.
It will be in the left front corner of the cylinder block on 3.9L, 5.2L, 5.9L gasoline, and 8.0L diesel engines.
It will be on the right side of the block near the oil pan rail on older V-8s.
It will be on the left side of the engine on the gear housing on most diesel engines.
The 4.7L engine has the VIN stamped on the right front side of the block.
Build date code is normally included on the yellow bar code sticker on the oil fill housing. When engine components need to be replaced, refer to the engine type and serial number.
Fig. Engine Identification (serial) number key-typical