Just the Details....Date Codes on Mustang Rear Leaf Springs

Mustang Leaf Spring Date Code Stamping Location on a 1965 Mustang

We have received a few recent inquiries about where to find and how to decode date codes on Mustang rear leaf springs.  Here are a few examples from a 1965 Mustang.

The first picture shows the location of the Ford engineering number and date code stamping.  The date coding uses a Julian Date, which is the day of the year.  For example:  In the picture below, the "123E5" stamping represents the 123rd day of 1965.  That is May 3, 1965.  

Here are two handy links for a calendar and Julian Date chart:

http://www.timeanddate.com/calendar/?year=1965

http://www.fs.fed.us/fire/partners/fepp/julian-calendar.pdf

1965 Mustang Rear Leaf Spring Stamping

The spring shown above has the number for a K Code / High Performance Fastback or Convertible model.

By the way, we have had very good luck with the rear leaf springs that we handle.  We have sold hundreds of sets, and they even have the correct tapered and rounded leaves like the originals, unlike many replacement ones on the market.  The ride height works out very well on all models too.