Dave,
The PKA denotes an AOD, non-computer controlled. An AOD-E would be PKC. I found this explanation, too, substituting your designators (you did not have a date code):
PKA...Transmission model
EA...Service I.D. level
043088 ...Serial number
K25... Build date N/month..25/day (Nov 25th)
E9AP EA...Assy part number Prefix/suffix..