In many cases it is necessary to identify the Perkins® Engine Number in order to ascertain the correct engine kit for an application. All Perkins® Engines should contain one of the two following formats for engine numbering (dependent on the year of manufacture):
Pre 1978 Engine Numbers:
This system, which consists of a maximum of 13 digits, was used from 1966 to 1978. Another numbering method was used prior to 1966, which utilized a digit number with no reference to engine series.