Transmission Serial Number Lookup - Allison

This is where the lookup process gets interesting—and where most people make expensive mistakes.

: It is most commonly located on the passenger side (right side) of the transmission. Some models may have it on the lower rear face of the rear housing. Allison Transmission Serial Number Lookup

Alternatively, it may be on the or the lower rear face of the rear housing. Other Identification Areas : This is where the lookup process gets interesting—and

While the public cannot always access the full internal build sheet, the serial number allows Allison dealers to decode: Alternatively, it may be on the or the

To effectively identify, maintain, and service an Allison Transmission, performing a Serial Number (S/N) Lookup

He slid under the chassis with a flashlight and a rag. There it was, bolted to the driver’s side of the main housing, often near the control module or oil fill tube. The plate was smudged with road grime, but after a quick wipe, the data was clear: