Allison Transmission Serial Number Lookup Link Jun 2026

: It may also be listed on your vehicle's identification plate (often in the cab/cowl area) or in the original vehicle order paperwork. Allison Transmission Common Series Serial Prefixes The first three digits often identify the series: Dartco Transmission 1000/2000 Series : Starts with 631, 632, or 9308. 3000 Series : Starts with 651, 652, or 9307. 4000 Series : Starts with 661, 662, or 943. to access the premium parts catalog? Allison HUB™ | Allison Transmission

In July 2005, Allison redesigned its nameplates. On newer nameplates, the model number no longer appears—it has been replaced by the serial number as the primary identifier. The transmission product family can be identified by the first two digits of the serial number: serial numbers beginning with "63" or "65" belong to the 1000/2000 Product Family, while "66" indicates the 4000 Product Family. This design change was made to provide only the information essential for identification, so your serial number becomes even more important for modern units.

Your Allison transmission's serial number isn't just a random string of digits. It is essentially the transmission's DNA. When entered into the proper system, it unlocks: allison transmission serial number lookup link

Review the generated document for critical data points, including your specific torque converter ratio, vocational model designation, and original fluid fill type. Decoding Your Serial Number: What the Digits Mean

To help find your exact parts or documentation, please let me know: : It may also be listed on your

If you don't have the number handy, you can typically find it on a located on the transmission housing: Allison HUB™ | Allison Transmission

The primary tool for Allison Transmission serial number lookups is the Allison HUB 4000 Series : Starts with 661, 662, or 943

There is no single public "type-and-click" link that reveals everything about an Allison transmission instantly. However, by registering for the (the primary lookup link) and using the Warranty Check tool, you can access 95% of the data you need.

What (e.g., RV, dump truck, school bus) is this transmission in?

Older red-tag transmissions often feature a letter code indicating the manufacturing plant (e.g., "N" for Indianapolis) followed by a shorter numerical sequence. Modern Era (1998–Present)