Transmission Serial Number Lookup | Allison

If a previous repair shop painted over the tag, gently scrape the paint away using a plastic scraper or a rag soaked in brake cleaner. Avoid wire brushes, which can scratch out the stamped numbers.

Don't let a missing serial number cause a $10,000 mistake. Spend the 10 minutes now to perform your lookup, and drive with confidence. Allison Transmission Serial Number Lookup

Once you've located and cleaned off the ID tag, you can start to understand what the numbers and codes mean. While a full lookup using the serial number is the most comprehensive method, the data plate itself contains a wealth of information that you can interpret directly. If a previous repair shop painted over the

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If you are working with an older or unique transmission, your serial number might look slightly different. Allison has updated its formatting over the decades. Modern 10-Digit Formats

: If the nameplate is missing or damaged, the serial number may also be found on a Vehicle Identification Plate

Internal valves, filters, and electronics vary by production year and assembly line.