Operation CHARM: Car repair manuals for everyone.

Engine ID and VIN Derivative Location



Engine ID and VIN Derivative Location

6.5L Diesel Engine





The engine unit number or date code is either laser etched or stamped into the engine block.

8.1L Engine




1 - Engine Identification Number Location

All engines are stamped with an eight digit engine identification number.

Engine ID




1 - Source Code
2 - Month of Build
3 - Date of Build
4 - Broadcast Code