See Figures 1, 2 and 3
The automatic transmission identification number is stamped into a pad located on the driver's side of the transmission, just above the oil pan rail. The number includes a ten-digit part number, a four-digit build date and a four-digit serial number.
The NP-2300 manual transmission identification plate is attached to the driver's side of the transmission case.
The AX-13 manual transmission identification number is stamped into a pad located on the bottom surface of the gear case. The number starts with a three-digit build, while the remainder of the digits are the serial number.
It is imperative that the transmission serial number be used when ordering parts or making inquiries about the transmission.