Number Lookup - Allison Transmission Serial
Older 8-digit or 9-digit serial numbers used an alphanumeric dating code: Indicate the manufacturing plant code.
While the serial number identifies your specific individual unit, the or Spec Number tells parts specialists the exact blueprints used to construct it.
Frequently feature a black or blue tag. Physical Locations on the Transmission
If you have entered your serial number into the Allison website or other online tools and received incomplete or seemingly inaccurate results, double-check that you have entered the serial number exactly as it appears on the tag, including all 10 digits with no transposed numbers. If the problem persists, contact an authorized Allison distributor directly for assistance. Allison Transmission Serial Number Lookup
Call a local OEM truck dealer (Freightliner, International, Kenworth, etc.). If the transmission is original, their database can pull the build sheet containing the Allison S/N.
Whether you are currently tracking down a specific or checking warranty status . Share public link
The best way to lookup an Allison serial number is through an . They have access to the Allison Transmission Global Distributor Directory to look up the exact build specifications. B. Online Tools Older 8-digit or 9-digit serial numbers used an
On many Allison identification tags, a date of manufacture number is also present. This number typically follows a format such as "05J12," which decodes to November 12, 2005. The letter corresponds to the month (A = January, B = February, C = March, D = April, E = May, F = June, G = July, H = August, I = September, J = October, K = November, L = December), and the numbers represent the day and year.
Identify the for your specific model series.
This alone told Marco the transmission was genuine and correctly identified. But he needed more. Physical Locations on the Transmission If you have
The Ultimate Guide to Allison Transmission Serial Number Lookup
For vehicles on a Freightliner chassis, you can sign up as an owner operator for access to DTNA Connect. By entering the last six digits of your VIN, you can retrieve the serial numbers for both your engine and transmission. Alternatively, calling Freightliner directly at and providing the last six digits of your VIN can get you the serial number of your Allison transmission.
Once you have documented your 10-digit serial number, you can utilize official channels to run the lookup.
Typically found on the passenger side (right side) toward the rear of the transmission main housing. On some older models or marine applications, it may be on the driver’s side (left side).
