: Useful for troubleshooting identification issues with help from experienced restorers. Do you have a specific serial number you're trying to identify right now? International Harvester Serial Number Plates | Octane Press 13-Mar-2018 —
Find the tag and write down the number (e.g., on a 1930s model).
A common point of confusion for tractor restorers is the difference between the and the engine serial number .
Typically found on the engine block or the transmission housing box. Letter and Hundred Series (1939–1950s)
Example: *9*18*W*
Often stamped directly onto the engine bolster or front frame channel. International Harvester Serial Number Table Highlights
Significant changes in tractor design often happened in the middle of a production year.
If you can share the of your International Harvester tractor (e.g., Farmall M, H, 300), I can help you find the precise year of manufacture based on the serial number. Are you looking to buy a specific part and need to narrow down the year? International Harvester Serial Numbers - Tractorparts.com
Look on the main transmission case housing or the engine block wall on the left side. International Harvester Tractor Serial Number Table-
When tables alone aren't enough (e.g., a missing or damaged tag), experts recommend these secondary methods: Casting Date Codes
For many letter-series tractors, you can find the tag located directly on the steering pedestal or the instrument panel. 4. The Operator's Platform
Mounted on the left side of the transmission case. Number Series (1958–1980s)
The location of the serial number plate varies by model and era, but common locations include: : Useful for troubleshooting identification issues with help
Stamped on a machined flat spot near the oil filter or spark plugs.
International Harvester transitioned through different identification systems over its history:
Usually found on the left side of the instrument housing or the clutch housing.
Later IH tractors (after 1985) fall under the Case International umbrella, which uses a different, more standardized, and longer serial number format. A common point of confusion for tractor restorers