Look on the left side of the clutch housing (torque tube) just ahead of the brake pedals.
The serial number is usually stamped into an aluminum or brass plate located in the following areas:
Found on the left side of the instrument panel support or the clutch housing. Number Series (1960s–1980s)
Many IH serial numbers include prefix letters that identify not just the model, but the kind of tractor within that model family. For example, Farmall M tractors often use the prefix FBK . A "Farmall Super M" has the prefix F-SM . On "Super M" tractors built in Louisville, an L is stamped on the tag to indicate the plant of origin. You can also encounter industrial variants: on the I-12 and I-14, the prefix letters were IS . These prefixes are the key that tells you which serial number list—Farmall, International, or Industrial—to consult. International Harvester Tractor Serial Number Table-
In 1954, IH updated its lineup with torque amplifiers, live hydraulics, and two-tone white and red paint schemes. Farmall 300 (1954–1956) The successor to the Farmall Super H. Starting Serial Number 1955 1956 Farmall 400 (1954–1956) The successor to the Farmall Super M. Starting Serial Number 1954 1955 1956 IH 06 & 56 Series
International Harvester typically stamped serial numbers onto a metal plate riveted to the tractor chassis. Over decades of farm use, these plates can become painted over, damaged, or lost. Common Plate Locations
For those who prefer a physical reference, several key printed books compile this data. The most prominent is Guy Fay's which covers every wheeled tractor from the 1921 McCormick-Deering 15-30 up to the last models, including the Farmall 650. This book includes all known serial numbers, engine codes, and specification data. Look on the left side of the clutch
If the plate is missing, look for dates cast directly into major metal components (transmission, engine block). They follow a Month-Day-Year Letter format. To find the year, add the letter's position in the alphabet to 1930 (e.g., A=1931 , I is skipped, J=1939 ). Serial Number Locations
I can provide the targeted production metrics and hidden factory option codes for your exact machine.
| 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 | For example, Farmall M tractors often use the prefix FBK
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
Prefixes indicate the specific chassis style and fuel type. For example, on a Farmall H: Farmall H (Gasoline) FHD: Farmall H (Distillate)
The serial number is a practical tool for: