Production years
1939-1954
Farmall tractor ยท 1939-1954
Farmall M Tractor
The Farmall M is an iconic row-crop tractor, best known for simple mechanical design and approximately 36 tested PTO hp. It is well suited to parade, restoration, belt work, light to moderate tillage, and traditional farm chores.
Engine
International Harvester C248, 247.7 cu in (4.1 L) four-cylinder; gasoline or distillate versions
Power
25 hp claimed drawbar; 36.07 hp tested PTO
Weight
Approximately 4,858 lb
Farmall M specifications
| Production years | 1939-1954 |
|---|---|
| Engine | International Harvester C248, 247.7 cu in (4.1 L) four-cylinder; gasoline or distillate versions |
| Power | 25 hp claimed drawbar; 36.07 hp tested PTO |
| Transmission | 5-speed sliding gear |
| Weight | Approximately 4,858 lb |
| Fuel type | Gasoline or distillate; MD diesel was a distinct variant |
| Hydraulics | Optional Lift-All, transmission-driven pump |
| PTO | 540 rpm rear PTO |
What the M is used for
The M is effective with period-correct implements, drawbar work, cultivation, raking, and show or parade use. Its narrow-front row-crop layout and manual controls reflect its era and reward an operator who works deliberately.
It lacks the convenience and safety equipment expected on newer tractors, including a factory rollover structure and independent PTO. Use it within its power range and do not treat it as a substitute for a modern loader or high-speed road tractor.
Why the Farmall M stands out
More than 270,000 Farmall M tractors were built at Rock Island, making the model one of the defining American row-crop tractors. Its durable C248 engine family, straightforward five-speed transmission, huge production base, and enduring collector community make it especially recognizable.
Buying a used Farmall M
Identify the exact fuel and front-end configuration, because gasoline, distillate, MV, and MD examples differ. Check for engine cracks or freeze damage, poor compression, worn steering and front pedestal parts, brake condition, transmission noise, Lift-All performance, and unsafe improvised repairs; inspect the serial plate on the left side of the engine area. Values vary, so check comparable listings and confirm specifications with TractorData.com.
Farmall M frequently asked questions
How many Farmall M tractors were built?
Farmall production totaled 270,140 M tractors.
How much PTO power does a Farmall M have?
Nebraska testing cited about 36.07 PTO hp for a Farmall M.
Was the Farmall M available as a diesel?
Yes. The MD was the diesel-engined version of the M.
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.