Allison Transmission Serial Number Lookup [top] Jun 2026

The serial number format typically looks like:

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Popular in motorhomes, refuse trucks, and fire apparatus. Look on the driver’s side (left side) of the main case, toward the middle or rear.

The 10-digit serial number is often stamped directly into the casting of the transmission case near the oil pan rail or the main data plate location. Allison Transmission Serial Number Lookup

Two identical trucks with the exact same 3000 RDS model transmission can feature completely different torque converter ratios, turbine speed sensors, or power take-off (PTO) drive gears. Providing both the Serial Number and the Assembly Number to your parts distributor guarantees a perfect match for high-wear internal components like friction plates, gaskets, filters, and solenoids.

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: Re-verify the digits on the tag. It is easy to mistake a stamped 0 (zero) for an O (letter), or a 1 (one) for an I . Remember that modern Allison serial numbers are strictly numeric. The serial number format typically looks like: This

Modern Allison ID tags are usually silver with black text, though older models may feature blue or green tags. The tag contains several key pieces of data:

: Check the rear cover or right-rear side of the main housing.

If you cannot find your data tag, or if the online system requires a login you do not have, an authorized dealer can assist you. Provide them with your vehicle's VIN; in many cases, commercial truck dealers can cross-reference the VIN to pull the factory-installed transmission serial number. Can’t copy the link right now

While some third-party websites claim to offer free Allison serial number decoding, exercise caution. These unofficial tools may provide incomplete or inaccurate information. For reliable, guaranteed-accurate data, always use the official Allison HUB platform [19†L12-L14].

Allison transmission serial numbers typically follow a specific format, which may vary depending on the model and production era. Some common formats include:

Ensures you get the correct torque converter, clutch pack, sensors, or seals.