International Harvester Tractor Serial Number Table- Now

This comprehensive guide explains how to locate your International Harvester serial number, decode its meaning, and use our master reference tables to determine the exact year your tractor rolled off the assembly line. Why the Serial Number Matters

Stamped on a plate on the left side of the clutch housing or the engine tool box.

Here is the rule for using starting-number tables: International Harvester Tractor Serial Number Table-

Significant changes in tractor design often happened in the middle of a production year.

Before we list the tables, it is crucial to understand that IH did not always align model year changes with the calendar year (January 1). Typically, the "model year" for International Harvester ran from of the following year. This comprehensive guide explains how to locate your

Identifies the specific model variation or configuration. Country (Letter): Often "U" for USA.

Below is a condensed, high-value reference table. For a full restoration, always cross-reference with official IH archives (like the Wisconsin Historical Society) or a published International Harvester Tractor Serial Number Table book by Guy Fay. Before we list the tables, it is crucial

Pro Tip: Clean the area with a wire brush and use chalk or a crayon to rub over the stampings. If the plate is missing, look for the "VIN" stamping directly into the cast iron.