Transmission Identification
The 42RLE transmission can be identified by a barcode label that is affixed to the upper left area of the bellhousing.
The label contains a series of digits that can be translated into useful information such as transmission part number, date of manufacture, manufacturing origin, assembly line identifier, build sequence number, etc. See Fig 1 for identification label breakdown.
If the tag is not legible or is missing, the "PK" number, which is stamped into the left rear flange of the transmission case, can be referred to for identification. The entire part number, build code, and sequence number are stamped into the flange.