International Harvester Tractor Serial Number Table- May 2026

Before we dive into the tables, it is important to understand why these numbers matter.

| Model | Serial Start | Serial End | Year | |-------|-------------|------------|------| | 786 | 1 | 5466 | 1979-1981 | | 886 | 1 | 15623 | 1976-1981 | | 986 | 1 | 12098 | 1976-1981 | | 1086 | 1 | 35828 | 1976-1981 | | 1486 | 1 | 17673 | 1976-1981 | | 1586 | 1 | 10815 | 1976-1981 |

| Model | Serial Start | Serial End | Final Year | |-------|-------------|------------|-------------| | Farmall 706 | 501 | 65933 | 1967 | | Farmall 806 | 501 | 54184 | 1967 | | Farmall 1206 | 8001 | 13758 | 1966-1967 | | Farmall 856 | 10001 | 13144 | 1967-1971 | International Harvester Tractor Serial Number Table-

| Model | Serial Range | Year Example | |-------|-------------|---------------| | Farmall 460 | 501 – 36970 | 1958-1963 | | Farmall 560 | 501 – 54278 | 1958-1963 | | Farmall 660 | 501 – 5627 | 1959-1963 | | International 606 (utility) | 501 – 24134 | 1961-1967 |

If you own a classic International Harvester (IH) tractor—whether a letter-series Farmall, a gassy old Cub, or a burly 1066—one of the first things you’ll want to do is pin down its birthday. Fortunately, IH kept meticulous records. Below is a simplified serial number table covering the most popular models from the 1930s through the early 1980s. Before we dive into the tables, it is

Tip: The serial number is usually stamped on a flat plate or directly into the casting on the left-hand side of the clutch housing or transmission case.

Let’s walk through a practical example. You find a rusted Farmall H in a ravine. Tip: The serial number is usually stamped on

  • Conclusion: Since 185,643 falls between 170,001 and 250,000, the tractor is a 1946 model (produced between Sept 1945 and Aug 1946).
  • If your serial number plate is rusted or missing, you are not out of luck. Combine the serial number table with other clues: