Apr 12, 2017 Today more Cubs are found in parades and tractor shows than in fields and farmyards, but during its heyday more than 20,000 Farmall Cubs were the workhorses of small farms across the United States. The key to the year that a Farmall Cub was manufactured is the serial number on each tractor. Serial Number Tag. International / Farmall - Fits: F12, F14, F20, F30, W30, W40, WK40. Anodized aluminum. Customer must stamp serial number or have a trophy shop stamp it. 2-15/16' x 6-1/8'. Anodized aluminum. Customer must stamp serial number or have a trophy shop stamp it. 2-15/16' x 6-1/8'.

Farmall cub Serial Numbers

Example: In this example, tractor serial number was 900 was built in 1981 because it is after the first serial number for 1981 but before the first number for 1982. The list only shows the number from the first tractor built in each year. Unless you happen to have the first first tractor off the production line, then your particular number will not be on the list.

International Cub Serial Numbers

Casting Numbers

These numbers can be found on the engine block and transmission in various places. They will have a Month/Day/Year, however the year is represented by a letter.

Casting numbers can be used to approximate the year of manufacture if the serial number tag is missing or destroyed.

It can also be used to verify different component on the tractor match the year of manufacture or if a previous owner (PO) has mixed and matched parts to make a complete working Cub tractor.

Cub Lo-Boy Serial Numbers

The serial number starts with IH Cub Lo-Boy then the serial number.

International Cub 154 Lo-Boy

Stihl Serial Number Date

Stihl Serial Number Year Farmall Engine

International Cub 185 Lo-Boy

International 184 Lo-Boy