Enter your into the "Serial Number Search" tool.
🔍 : Always verify the SN on the physical tag first, as TCMs can sometimes be swapped between vehicles without being reprogrammed.
The Ultimate Guide to Allison Transmission Serial Number Lookup: Location, Decoding, and Parts Matching Allison Transmission Serial Number Lookup
Identifying your Allison transmission is the first and most critical step for maintenance, ordering replacement parts, or executing repairs. Allison Transmission does not use a single "one-size-fits-all" design, meaning two transmissions in identical truck models can have completely different internal components.
To minimize downtime, keep a digital log of your fleet's transmission data. Fill out this quick template for every vehicle in your garage: _______________ Vehicle VIN: _______________ Allison Model: _______________ Transmission S/N (10 digits): _______________ Assembly Number (A/N): _______________ Enter your into the "Serial Number Search" tool
The most reliable lookup method is the official portal (or Allison HUB). Navigate to the public Allison Transmission website.
For those seeking a remanufactured transmission, the serial number is equally important. To find a ReTran part number compatible with your customer's original or ReTran serial number: Navigate to the public Allison Transmission website
If you are currently looking for a specific part, you can check Allied Systems' online catalog to see if your transmission is listed.