Link | Allison Transmission Serial Number Lookup

To help narrow down your search or diagnose an issue, tell me:

B 6 6 9 0 1 2 3 4

Information regarding the torque converter model, turbine rating, and control module configuration. allison transmission serial number lookup link

The exact day, month, and year your transmission was manufactured.

The official tool for tracking your transmission's history and specifications is available directly through the manufacturer's hub. Allison Transmission My Transmission Portal To help narrow down your search or diagnose

| Serial Number Prefix (First 3 chars) | Typical Model Series | | :--- | :--- | | B66, B67, B68 | 1000/2000 Series (5-speed) | | C93, C94, C95 | 3000 Series (6-speed) | | X12, X13, X14 | 4000 Series (7-speed) | | 69xxxxx (Legacy) | HT700 or MT600 Series |

If you are a professional shop, invest in the Allison DOC subscription via the official link above. It will pay for itself in the first hour of saved diagnostic time. Allison Transmission My Transmission Portal | Serial Number

Displays the remaining coverage period and factory warranty start date. Troubleshooting Common Lookup Issues

: Check if your unit is still under coverage using the Warranty Status Check tool .