Note: For a comprehensive list of thousands of models, enthusiasts often refer to official IH Archival Resources or the International Harvester Identification Guide .
Knowing your tractor’s serial number isn't just about bragging rights. It’s the key to: ✅ Ordering the correct parts ✅ Determining original specs ✅ Verifying collectible value International Harvester Tractor Serial Number Table-
International Harvester Company (IH) produced farm tractors from 1906 until 1985 (when the agricultural division was sold to Tenneco, forming Case IH). To track production, identify model year, and verify authenticity, IH used serial number plates attached to the tractor’s chassis. Serial number tables (often found in service manuals, parts catalogs, and enthusiast guides) provide the cross-reference between serial number ranges and the corresponding year of manufacture. Note: For a comprehensive list of thousands of
: IH frequently updated components like gears or fuel systems mid-production. Knowing the serial number is critical for finding the correct "up to" or "after" part in a repair manual . To track production, identify model year, and verify
IH did not always align serial numbers strictly with calendar years. Production years often ran from September/October of the previous year through August of the named year. Also, some models had overlapping serial ranges due to multiple assembly plants (Louisville, KY; Doncaster, UK; Geelong, Australia; Neuss, Germany).
: Identifies the chassis or machine type (e.g., "259" for an IH 5488). Code (Next 3 digits) : Specifies the configuration or trim. Country (Letter) : "U" typically stands for the United States. Actual Serial (Last digits)
| Model | Year | Starting Serial Number | Year | Starting Serial Number | | :--- | :--- | :--- | :--- | :--- | | | 1939 | 501 | 1947 | 199,896 | | (Super A) | 1947 | 250,001 | 1954 | 328,501 | | Farmall B / BN | 1939 | 501 | 1947 | 116,501 | | Farmall C / Super C | 1948 | 226,501 | 1951 | 280,165 | | Farmall H | 1939 | 501 | 1953 | 392,292 | | Farmall M / MV | 1939 | 501 | 1952 | 269,634 | | Farmall 300 | 1955 | 501 | 1956 | 33,189 | | Farmall 350 | 1956 | 501 | 1958 | 34,301 | | Farmall 400 | 1954 | 501 | 1956 | 38,551 | | Farmall 450 | 1956 | 501 | 1958 | 18,144 | | IH 504 | 1963 | 501 | 1965 | 11,775 | | IH 606 | 1962 | 501 | 1967 | 26,619 | | IH 706 (Gas) | 1963 | 501 | 1967 | 71,138 | | IH 806 | 1963 | 501 | 1967 | 44,209 | | IH 826 | 1968 | 8,621 | 1970 | 15,517 | | IH 856 | 1968 | 9,581 | 1971 | 19,718 | | IH 966 | 1971 | 10,208 | 1976 | 41,911 | | IH 1066 | 1971 | 10,208 | 1976 | 49,243 | | IH 1466 | 1971 | 10,208 | 1976 | 18,441 | | IH 1566 | 1974 | 8,799 | 1976 | 11,028 |