International Harvester Tractor Serial Number Table- [upd] ★ «Quick»

International Harvester (IH) tractor serial numbers are essential for determining the specific production year and matching parts for restoration. While thousands of models exist across decades, most follow a structured format based on the manufacturing plant or a specific "Kind/Code" system. Common Farmall & IH Serial Ranges

Below is a sample of popular historical models and their production serial number ranges. For a comprehensive, model-specific search, you can use the Yesterday's Tractors Serial Number Registry. Production Years Starting Serial # Ending Serial # Farmall Cub 1947 – 1964 1939 – 1947 1939 – 1953 1939 – 1952 IH 300 Utility 1954 – 1956 1971 – 1976 How to Decode Your Serial Number Serial number list - Technical IH Talk - Red Power Magazine

Representative Serial Number Table (Illustrative examples)

Note: This is a concise, representative table to illustrate format and typical ranges. For precise restoration work use official factory records, recognized serial reference books, or trusted registries. International Harvester Tractor Serial Number Table-

| Model | Typical Serial Range (example) | Approx. Production Years | Typical Assembly Plant / Notes | |---|---:|---|---| | Farmall A | 1000–250000 | 1929–1947 | Multiple US plants; early years lower serials | | Farmall H | 1–325000 | 1939–1954 | Long-run model; Super H later | | Farmall M | 1–300000 | 1939–1954 | Many units; Super M variants in later ranges | | Farmall Cub | 1–500000 | 1947–1979 | Produced in US; many serial blocks by year | | IH 400 | 401000–409999 (example) | 1963–1967 | Numeric series; check plant prefixes | | IH 560 | 560000–569999 (example) | 1958–1962 | Mid-size row-crop | | IH 656 | 656000–659999 (example) | 1965–1967 | Higher-hp; production numbers varied | | IH 1066 | 1066### (series) | 1971–1976 | Diesel turbo models; variants and plant codes |

(These examples illustrate format — not authoritative production blocks.) Serial schemes changed over decades; post-1950s models often

Notable Exceptions & Caveats

  • Serial schemes changed over decades; post-1950s models often used more complex coding.
  • Exported tractors sometimes have separate serial blocks or additional prefixes.
  • Re-stamped or replaced engine/transmission housings during repairs can complicate identification.
  • Special-order tractors (e.g., industrial, orchard, crawler conversions) may deviate from main ranges.

What If Your Number Isn't in the Table?

There are several possibilities:

  • Prototype: Numbers under 500 are usually pre-production test models. Very valuable.
  • Industrial variant: IH made industrial tractors (I-4, I-6, 3400, 3500) with separate serial number sequences starting with 501-B.
  • Export model: Tractors built in IH’s Doncaster, England plant (B-275, B-414) have different tables entirely, usually prefixed with a B.
  • Franken-tractor: The casting numbers on the engine or rear end (e.g., 1 6 52 = January 6, 1952) might not match the serial number if the tractor was rebuilt from multiple donor machines.

Step 2: How to Read the Table

A serial number table is essentially a timeline. IH generally used sequential numbering systems. When you find your number, you are looking for the "range" it falls into. not 1 or 1001.)

Example: The Farmall M | Serial Number Range | Year Produced | | :--- | :--- | | FAA - 501 | 1939 | | FAA - 40555 | 1940 | | FAA - 100001 | 1941 |

If your Farmall M has a serial plate reading FAA-75000, you can look at the table above and determine it was built in 1941.

(Note: IH serial numbers typically start at 501 for a new model run, not 1 or 1001.)