Allison Transmission: Serial Number Lookup __exclusive__

You now know where to find the number (data plate, left side, or via DOC), how to decode it (sequence only, use the system), and who to call (local distributor or 1-800-ALLYSON).

An Allison serial number is a unique identifier. It links your specific unit to the factory build sheet. You will need this number to: Allison Transmission Serial Number Lookup

: Call a local authorized Allison dealer with your vehicle's VIN. They can often cross-reference the original factory build sheet. You now know where to find the number

Once a transmission has been put to good use, some of the information contained on the data plate may wear off with time. If the numbers are partially worn, try illuminating the tag from an angle with a bright flashlight. Sometimes the stamping impressions are visible even when the surface finish has worn away. If the tag remains unreadable, the backup methods described above should be employed. You will need this number to: : Call

If the transmission in your vehicle is not the original unit, the VIN lookup method will not provide accurate information. In this case, the physical tag on the current transmission is your only reliable source of information. If that tag is also missing, professional diagnostic software connection to the TCM becomes the most reliable method.

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

The real power of the lookup came next. Marco clicked a sub-link: