International Harvester Tractor Serial Number Table- !!top!! Guide

International Harvester (IH) and Farmall tractor production years are identified via serial number plates located on the engine block, transmission, or front bolster. If the plate is missing, casting date codes on major components can be used to determine the year. Detailed, model-specific serial number tables are available from sources such as the Wisconsin Historical Society IH Archives Bates Corporation Wisconsin Historical Society

Common Reference Sources (recommended)

• Published serial-number guides and model histories from reputable authors (tractor historians and registries).
• Manufacturer parts books and operator manuals (often reprinted by tractor clubs).
• Tractor clubs and registries (e.g., Farmall/International chapters) — they maintain detailed serial lists.
• Museum archives and official factory production logs (where accessible).

Comprehensive Serial Number Table: Farmall & International (1939–1976)

Below is a condensed, high-value reference table. For a full restoration, always cross-reference with official IH archives (like the Wisconsin Historical Society) or a published International Harvester Tractor Serial Number Table book by Guy Fay. International Harvester Tractor Serial Number Table-

Whether you are buying a new project, ordering parts, or registering for a vintage tractor show, knowing the exact age of your machine is crucial. For International Harvester (IH) enthusiasts, the serial number is more than just a string of digits—it is the DNA of your tractor. Note: After 1972

Title: 🔧 Unlock the History of Your Red Baby: International Harvester Tractor Serial Number Table International Harvester Tractor Serial Number Table-

: Often stamped on a machined flat surface of the cylinder block, these numbers usually trend slightly higher than the tractor's chassis serial number but can confirm the age. Regional Differences

6. Limitations & Accuracy

• No single master table exists for all IH tractors. Different factories (USA, UK, Germany, Australia) used independent serial ranges.
• Model year vs. calendar year: A tractor made in November 1955 is often sold as a 1956 model.
• Replacement plates: Some tractors have had plates replaced, leading to mismatched numbers.
• Official sources: The Wisconsin Historical Society (IH archives) and International Harvester Tractor Data Book (by Guy Fay) are the most authoritative references.

Note: After 1972, IH began using a more complex 6-digit alphanumeric system on some models. Always verify with an IH serial number reference book for late-production tractors.

How to Use This Table

1. Find your tractor’s serial number.
2. Locate your model below.
3. Match your number to the range.
4. The year listed indicates end of production for that range (most IH serial numbers are sequential).