Lionel Diesel Engine Part Numbers

The short answer is. The numbers starting with 6 are older models.

The 7 digit numbers are a "new" type of P/N, for more recent offerings.

I'm not sure about the year correlation .

@pphegena posted:

Hi

Happy Holiday

I have a Question about the P/N on Lionel Engines Why do some P/N start with a 6- and some start with 19 0r 20 or 22

Example 6-81327, 6-34672, 6-28598 ?

2233081 or 1933352, 2033353 ?

Looks like the ones without the 6- are the first 2 digits of the year these were produced ?

Regards

Prentice

Using the OGR Forum search function yields a few threads on this same topic. The threads linked below should help to answer your question.

Lionel's new 7-digit numbering system

Lionel's New Numbering System