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 .
International Harvester Tractor Serial Number Table: The Ultimate Guide
Stamped on a machined flat spot near the oil filter or spark plugs.
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.
Some models have the tag attached to the inside of the left-hand seat support. Red Power Magazine If the plate is missing, check the engine block International Harvester Tractor Serial Number Table-
International Harvester stamped a unique serial number into the engine block itself. While the engine type matched the tractor model, the numbers rarely matched the chassis serial number.
As farming scaled up, IH answered with high-horsepower giants. Models like the , and the legendary
International Harvester (IH) tractor serial numbers are used to identify the specific production year and manufacturing details of a machine. Because IH produced hundreds of models under various brands like Farmall, McCormick, and Case International, serial number tables are typically organized by specific model series. Common Starting Serial Numbers by Model
Using casting codes is less precise, but it ensures you don't buy a 1945 engine in a 1947 chassis. For most tractors, look for a thin metal
If you can share the of your International Harvester tractor (e.g., Farmall M, H, 300), I can help you find the precise year of manufacture based on the serial number. Are you looking to buy a specific part and need to narrow down the year? International Harvester Serial Numbers - Tractorparts.com
The serial number on IH tractors typically consists of 6-8 digits, depending on the model and production year. The serial number can be found on a metal plate or sticker located on the tractor's engine, transmission, or chassis.
Ensure you are looking at the correct serial number table. An "F-20" table will not work for an "H".
Check the rear axle housing or the side of the transmission case. Decoding IH Serial Number Prefixes and Suffixes For those who prefer a physical reference, several
I can cross-reference production logs to give you deeper insight into your machine's history. Share public link
The indicates the identity of the entire machine and is the number you should use for historical tables.
The is more than a list of dates—it is a historical document. In the collector market, a 1953 Farmall Super M is common, but a 1954 model with a serial number above 65,000 might have the rare "high-altitude" pistons.
In 1952-1954, IH added “Super” to denote upgrades (disk brakes, stronger hydraulics). The serial number table for these models often overlaps the standard letter series.