Spicer Dana Spicer Drive Axles - Manual (Page 4)

Model Identification
Location of Model Identification
Differential carrier identification is either stamped on the carrier itself or on a metal tag affixed to the carrier. Location on the carrier is the same.
Carrier Assembly Serial Numbers
Starting in May of 1987, Spicer began assigning serial numbers to carrier assemblies, instead of just a date code. These serial numbers will be
stamped into the carrier casting.
The carrier assembly serial number will consist of ten characters; a letter followed by nine numerals. A sample carrier assembly serial number
is shown.
The letter designation indicates the producing plant; either an “H” for Henderson, Kentucky plant, or “G” for our Glasgow, Kentucky plant. A
five digit Julian date code follows, the first two digits indicating the year, and the last three indicating the day of the year. The last four digits are
a number unique to each axle.