International Harvester Tractor Serial Number Table- ((new)) May 2026

The Ultimate Guide to the International Harvester Tractor Serial Number Table

Do you have a serial number that doesn’t match any table? Post it on the Red Power Magazine forums—the IH experts there have access to the original microfiche records.

specific serial number

Do you have a or model you're trying to identify? Serial Numbers International Harvester Tractor Serial Number Table-

In this guide, we will break down how to find your serial number, how to decode it, and provide a reference table for some of the most popular IH models. The Ultimate Guide to the International Harvester Tractor

Quick ID Checklist Before You Search

• 9 = September
• 18 = 18th day
• W = 1951 (IH letter code for years: T=1949, U=1950, V=1951, W=1952, X=1953, Y=1954, Z=1955)

H & M Series and Later:

Often located on the transmission housing or on a plate near the engine. 9 = September 18 = 18th day W

1. The Serial Number Plate (Tag)

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 .

The Ultimate Guide to International Harvester Tractor Serial Numbers