Before you can perform a lookup, you must locate the number on the transmission itself. Allison serial numbers are typically and consist only of numbers (no letters).
: Within the HUB, you can search for "Unit History" to find historical build data, original configuration information, and any warranty claims associated with that specific transmission. allison transmission serial number lookup link
Once you have your 10-digit number, you can use these official Allison resources: Before you can perform a lookup, you must