Allison Transmission Serial Number Lookup May 2026

For registered users, this page provides a "Unit History" including the ship date, the original equipment manufacturer (OEM) it was sold to, and the specific bill of materials (like torque converter and governor assemblies). 3. Decoding the Serial Number (Common Series)

Allison serial numbers are typically 10 digits long . 2. Using Official Lookup Tools Allison Transmission Serial Number Lookup

Once you have the 10-digit serial number, you can use official Allison Transmission resources to pull the unit's history. For registered users, this page provides a "Unit

The most reliable way to identify your transmission is to locate the (nameplate) attached directly to the transmission housing. You can verify if your unit is still

You can verify if your unit is still under factory or extended coverage by entering the S/N into the Warranty Status tool on the HUB.

On older or specific vocational models, the tag may be on the lower rear face of the rear housing or near the bellhousing.