International Harvester Tractor Serial Number Table- [patched] -

For decades, International Harvester (IH) and its successor, Case IH , manufactured some of the most iconic farm machinery in history. From the legendary Farmall letter series to the powerful 1066 , these tractors are still working fields and pulling at antique tractor pulls today.

Whether you are a collector trying to authenticate a barn find, a farmer looking for the correct parts, or a restorer determining the exact year of your machine, you need one tool above all others: the . International Harvester Tractor Serial Number Table-

| Model | Serial Number Start | Serial Number End | Production Years | | :--- | :--- | :--- | :--- | | | 501 | 53,200 | 1954–1956 | | Farmall 130 | 501 | 22,500 | 1956–1958 | | Farmall 200 | 501 | 24,300 | 1954–1956 | | Farmall 230 | 501 | 12,800 | 1956–1958 | | Farmall 300 | 501 | 47,500 | 1954–1956 | | Farmall 350 | 501 | 18,500 | 1956–1958 | | Farmall 400 | 501 | 36,000 | 1954–1956 | | Farmall 450 | 501 | 16,600 | 1956–1958 | International Harvester “W” Series (Standard Tread) | Model | Serial Number Range | Year | | :--- | :--- | :--- | | W-4 | 501 – 45,000 | 1940–1953 | | W-6 | 501 – 60,000 | 1940–1953 | | W-9 | 501 – 18,000 | 1940–1953 | | WD-9 (Diesel) | 501 – 27,000 | 1953–1957 | The Modern Era (1958–1985) – 06, 26, 56, 66, 86, 88 Series This is where IH competed directly with Deere's New Generation. The serial number tags are usually rectangular aluminum plates. For decades, International Harvester (IH) and its successor,

This article provides a deep dive into how to read these tables, locate your serial number, and decode the history hidden in those digits. Before we list the tables, it is crucial to understand that IH did not always align model year changes with the calendar year (January 1). Typically, the "model year" for International Harvester ran from September 1 to August 31 of the following year. | Model | Serial Number Start | Serial

Do you have a serial number that doesn’t match any table? Post it on the Red Power Magazine forums—the IH experts there have access to the original microfiche records.

Whether you own a little Farmall Cub or a massive 4366 4WD, take ten minutes today to locate your serial number, consult the correct table, and write down the year. You will need it for every parts order, resale negotiation, and club registration from now on.