Identify specific part numbers and model configurations for older Farmall units on the TM Tractor Parts ID Guide
If the tag is missing and the engine pad is rusty or ground down, you can estimate the age using casting codes. IH cast dates into their parts (blocks, heads, housings) using a letter-number code. International Harvester Tractor Serial Number Table-
| Model | Serial Number Range | Year Built (Approx.) | Notes | | :--- | :--- | :--- | :--- | | | 501 – 100,000 | 1939 – 1947 | Later replaced by Super A | | Farmall Super A | 250001 – 327826 | 1947 – 1954 | Includes high-crop variants | | Farmall B | 501 – 125,000 | 1939 – 1947 | Narrow-front row crop | | Farmall C | 501 – 75,000 | 1940 – 1948 | Offset design | | Farmall Super C | 160001 – 172772 | 1951 – 1954 | | | Farmall H | 501 – 390,000 | 1939 – 1947 | Most produced letter series | | Farmall Super H | 10001 – 24634 | 1953 – 1954 | Rare model | | Farmall M | 501 – 270,000 | 1939 – 1952 | | | Farmall Super M | 501 – 75000 | 1952 – 1954 | High compression engine | Identify specific part numbers and model configurations for
Newer models often use a 17-character VIN-style serial number that includes manufacturer, plant codes, and model year indicators. Where to Find the Serial Number Where to Find the Serial Number : A
: A community-driven site where enthusiasts share serial number registries and identification advice. Yesterday's Tractors
International Harvester (IH) tractor serial numbers are essential for identifying the production year and specific configuration of your machine. Generally, serial numbers are purely incremental for a specific model, but starting in the late 1960s, IH adopted a more complex "Kind/Code" system. Common Serial Number Tables (Starting Numbers)