International Harvester Tractor Serial Number Table- -

Always distinguish between engine numbers and chassis (tractor) numbers. Early models often emphasized the engine number.

Later International Harvester models often included letters in their serial numbers. These letters are crucial as they indicate specific features, such as: Diesel engine G: Gasoline engine F: Farmall (row-crop) U: Utility or standard chassis H: High-clearance Popular IH Tractor Series and Their Serial Numbers

(These examples illustrate format — not authoritative production blocks.)

What are the visible on your serial tag? International Harvester Tractor Serial Number Table-

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Older models often feature the model name on the top line and a simple numerical serial number below it.

Locate your model in the table and find the range where your number falls. For example, a 10-20 Mogul with number 100,000 would fall within the 1927 range ( 8947089470 119822119822 These letters are crucial as they indicate specific

The tractor that started the row-crop revolution. The Regular was the first mass-produced tractor with a clear view of the row ahead. Serial numbers began at in 1926 and ended near The Letter Series (1939–1954) The iconic A, B, H, and M series changed farming forever. Introduced in 1939 with serial number , production ran through 1953, reaching over

Here is the rule for using starting-number tables:

Letters stamped at the very end of the serial number indicate special factory modifications. Common IH suffix codes include: Gasoline engine X2: Distillate engine X3: Kerosene engine Y: High-clearance / High-Crop chassis W: Wide front axle Locate your model in the table and find

Find the tag and write down the number (e.g., on a 1930s model).

You cannot use the table if you cannot find the number. On International Harvester tractors, the location changed depending on the era:

Whether you are a collector trying to authenticate a barn find, a farmer looking for the correct parts, or a restorer determining the exact year of your machine, you need one tool above all others: the .

Using casting codes is less precise, but it ensures you don't buy a 1945 engine in a 1947 chassis.

From 1951-1956, records were separated by plant, including Tractor Works, Farmall Works, and Louisville Works.