If you cannot access the online portal, the first few digits of the S/N often identify the product family: Dartco Transmission Serial Number Starts With Transmission Series 631, 632, 9308 1000 / 2000 Series 651, 652, 9307 3000 Series 661, 662, 943 4000 Series AT500 / AT1500 Series MT600 Series HT700 / CT700 Series 4. Backup Identification Methods If the tag is missing or unreadable: VIN Lookup:
on the operator's cab or cowl that lists the transmission S/N. Busbee Truck Parts 2. Online Lookup Tools Allison Transmission Serial Number Lookup
Marco knew that with Allison transmissions, the truth wasn't in the seller’s handshake—it was stamped on a small, rectangular metal plate. If you cannot access the online portal, the
: The 10-digit serial number, typically found on a metal data plate on the passenger side (lower rear face) of the transmission, is the primary key for looking up exact model specs. Online Lookup Tools Marco knew that with Allison