Allison Transmission Serial Number Lookup

If you get this wrong, you could order the wrong filter kit, fry a solenoid with incorrect fluid pressure, or accidentally purchase a stolen or salvaged unit. If you get it right, you unlock a treasure trove of OEM data: build date, original configuration, recalibration files, and warranty status.

You can often identify the transmission family by the first few digits of the serial number: : Starts with 631, 632, or 9308. 3000 Series : Starts with 651, 652, or 9307. 4000 Series : Starts with 661, 662, or 943. AT500/1500 Series : Starts with 321 or 9108. MT600 Series : Starts with 241 or 242. 3. Official Lookup Tools Allison Transmission Serial Number Lookup

Allison Transmission is a leading manufacturer of medium- and heavy-duty automatic transmissions for various industries, including on-highway, off-highway, and defense. With a rich history dating back to 1915, Allison Transmission has established itself as a trusted brand in the transmission industry. If you're a fleet manager, mechanic, or owner of a vehicle equipped with an Allison Transmission, it's essential to understand the importance of the serial number and how to perform an Allison Transmission serial number lookup. If you get this wrong, you could order

The Allison Transmission serial number is crucial for several reasons: 3000 Series : Starts with 651, 652, or 9307

If you bought a used Allison without a confirmed history, run the serial number through (available via a distributor). Why? Because stolen heavy-duty transmissions are a real problem, and Allison will flag a serial number that was reported missing.