

In our example, this refers to "4045T." This can be further sub-divided into the "4045" and the "T". The next set of numbers in the John Deere engine serial number are four (4) or (5) numbers and letters. The first segment is the two initial letters "TO." These two initial letters indicates two things:- one, which country was it manufactured in, and secondly, if it is Powertech or non-Powertech.Īll John Deere engines manufactured in Dubuque, Iowa, USA, are preceded by the letters "TO," all engines preceded by "CD" are manufactured in Saran, a factory located in the Loiret area of France, and all engines manufactured in Torreon, Mexico, are preceded by the letters "PE." To better understand this number, it will be split into several parts. Understanding this marking categorization and system is crucial to part number identification, which is then used to select rebuild kits, components, and maintenance parts.Ī typical engine serial number looks like TO4045T123456. John Deere, like other engine manufacturers, uses its unique terminology and arrangements, to mark its products, and to assign part numbers.
