Allison | Transmission Serial Number Lookup

Most Allison units have a metallic or adhesive data plate. Look for:

The tag contains both the model number and the serial number. The serial number is typically a 10-digit code listed at the bottom left of this plate. Allison Transmission Serial Number Lookup

The number is used to track "unit history," including original build data, configuration specs, and past warranty claims. Online Lookup and Service Tools Most Allison units have a metallic or adhesive data plate

"Need help identifying my Allison transmission — found this ID plate but not sure how to decode it. S/N: [paste full serial]. Truck: [year/make/model], VIN: [last 8 digits]. Any guidance on model family and compatible parts would be appreciated!" " including original build data