International Harvester Tractor Serial Number Table- ((exclusive)) Jun 2026

Where on the tractor you found any ?

Pro Tip: If the metal tag is missing, check the engine block. IH often stamped the engine serial number separately, which usually corresponds to the chassis number range.

Note: The above data is generalized for agricultural models. Specialized industrial tractors have different series, such as T-340 or TD-6. Understanding the Serial Number Structure

Identifies the general machine type (e.g., 259 for certain Farmall models).

Usually stamped into an aluminum plate on the right side of the steering gear housing. International Harvester Tractor Serial Number Table-

: Sites like Bates Corp and Anglo Agriparts provide charts to help identify parts based on these numbers.

Look on the left side of the transmission housing, just ahead of the rear axle, or on the front frame rail. Understanding IH Serial Number Suffixes

Some models have the tag attached to the inside of the left-hand seat support. Red Power Magazine If the plate is missing, check the engine block

Data source.

Serial number ranges vary significantly by year. Below are examples of starting serial numbers for classic models: International Harvester Serial Number Plates | Octane Press

Beware of component numbers: Do not confuse engine casting numbers (molded directly into the iron) with the official serial plate. Casting numbers identify individual parts, not the tractor assembly. Decoding the Serial Number Suffixes

: Typically on the right side of the clutch housing or the steering gear housing .

Typically located on the transmission housing or seat support. Where on the tractor you found any

Using this system, a casting code of 4-12-W means the part was cast on April 12, 1951. Tractors were usually assembled within a few weeks of their components being cast.

If your serial number tag is illegible or missing, you can use the found on the engine block, transmission, or rear end to find the approximate date. Casting codes typically follow a format like: A234

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