I know next to nothing on this subject, have a friend who owns a junk yard, mostly does trucks, interesting question to ask him. I know we have many members here that do this for a living, hopefully they will soon answer.



I know that part number identifying and linking major parts to VIN's is of increasing concern with stopping auto theft for the parts (chop shops).

Part 541: Federal Motor Vehicle Theft Prevention Standard
Scope and Purpose:
This standard specifies performance requirements for identifying numbers or symbols to be placed on major parts of certain passenger motor vehicles. The purpose of this standard is to reduce the incidence of motor vehicle thefts by facilitating the tracing and recovery of parts from stolen vehicles.