Production years
1932-1939
Farmall tractor ยท 1932-1939
Farmall F-20 Tractor
The Farmall F-20 is an early row-crop tractor from the 1930s, commonly rated around 20 drawbar horsepower and 27 PTO horsepower. It was the "Increased-Power Farmall" and remains one of the best-known prewar American tractors.
Engine
International Harvester 220 cu. in. liquid-cooled 4-cylinder
Power
19.6 hp drawbar; 26.67 hp PTO, claimed
Weight
About 4,400 lb
Farmall F-20 specifications
| Production years | 1932-1939 |
|---|---|
| Engine | International Harvester 220 cu. in. liquid-cooled 4-cylinder |
| Power | 19.6 hp drawbar; 26.67 hp PTO, claimed |
| Transmission | 4-speed sliding-gear |
| Weight | About 4,400 lb |
| Fuel type | Distillate; many survivors are operated on gasoline |
| Drive and steering | 2WD with manual steering |
| PTO | Transmission-driven 540 rpm |
What the F-20 is used for
The F-20 was designed for two-plow row-crop work, belt-powered equipment, cultivating, and general farm chores. Its narrow front, high clearance, and adjustable rear wheels suited the crop rows of its era.
Today, most F-20s are used for antique tractor shows, parades, demonstrations, and light seasonal work. Its low-speed gearing and open operator station make it a historic machine rather than a modern all-purpose utility tractor.
Why the Farmall F-20 stands out
More than 154,000 F-20s were built, making it a cornerstone of Farmall collecting. The tractor's simple four-cylinder design, distinctive tall rear wheels, strong collector following, and wide availability of used parts and reproduction items help sustain its popularity.
Buying a used Farmall F-20
Check the engine block and head for frost cracks, inspect the magneto and cooling system, and make sure the hand-crank engine turns freely before attempting a start. Examine the final drives, clutch, transmission gears, steering, wheel castings, and tire condition. Verify the serial number and correct paint-era details, since originality matters to collectors; values vary, so check current listings.
Farmall F-20 frequently asked questions
How much horsepower does a Farmall F-20 have?
It was claimed at 19.6 drawbar horsepower and 26.67 PTO horsepower, with tested drawbar output commonly listed near 20.7 hp.
What years was the Farmall F-20 made?
The F-20 was produced from 1932 through 1939.
Are parts available for an F-20?
Common maintenance and restoration parts are generally available through Farmall specialty suppliers, clubs, salvage yards, and reproduction-parts vendors.
Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used tractors vary by condition and region. Page updated Aug 4, 2026.