Allison Transmission Serial Number Lookup Direct

While the public cannot access the full factory build sheet (which lists every single bolt and washer), the serial number tells the story of the transmission's birth.

An Allison serial number is typically a 7 to 9-digit numeric code (e.g., 79123456 ). Allison Transmission Serial Number Lookup

Once you have the 10-digit number, you can use it to retrieve specific data about your unit: While the public cannot access the full factory

This is where most people get tripped up. The (e.g., 1000, 2000, 3000, 4000) tells you the series. The serial number is unique to your specific transmission. The (e

The serial number typically consists of and is usually listed directly below the model number on the data plate. Leading digits often indicate the transmission series: 1000/2000 Series : Starts with 631, 632, or 9308. 3000 Series : Starts with 651, 652, or 9307. 4000 Series : Starts with 661, 662, or 943. AT500/1500 Series : Starts with 321 or 9108. MT600 Series : Starts with 241 or 242. HT/CT 700 Series : Generally starts with 251. 3. How to Perform a Lookup

You now know where to find the number (data plate, left side, or via DOC), how to decode it (sequence only, use the system), and who to call (local distributor or 1-800-ALLYSON).

Allison transmission serial numbers are stamped on a metal data plate (tag) attached to the transmission housing. The location varies depending on the series.