Most IH serial number lists, such as those found on TractorData.com , show the for each production year.
: Orchard configuration (low profile with protective metal shrouding). W : Wheatland / Standard wheel tractor. Common Suffix Codes T : Equipped with a Torque Amplifier (TA) transmission. S : Equipped with a constant-mesh shuttle transmission. E : Equipped with an adjustable wide front axle. D : Diesel engine configuration. LP : Liquefied Petroleum (propane) fuel system. How to Verify Your Tractor Using Casting Codes
IH mounted its serial number plates in various places, but there are some well-known standard locations. The owner's manual for your specific model will always contain the definitive location, but the following are common: International Harvester Tractor Serial Number Table-
Find the tag and write down the number (e.g., on a 1930s model).
: Located on the seat support bracket or the left side of the transmission case. Most IH serial number lists, such as those
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are the most accurate way to verify the model, production year, and exact factory origin of a vintage machine. Finding and understanding these factory numbers prevents costly mistakes when buying parts or restoring a classic tractor. Common Suffix Codes T : Equipped with a
By understanding how to read an International Harvester serial number table and knowing where to look for the most accurate information, you can unlock the full story of your tractor and connect with a rich agricultural legacy.
One of the most common pitfalls for beginners is confusing the with the engine serial number .
Identifying your tractor's exact year isn't just a fun fact; it serves several practical purposes:
For most tractors, look for a thin metal plate riveted to the instrument panel (dashboard) or the side of the clutch housing. This plate usually lists the Model , Serial Number , and sometimes the Speed Ratio .