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farmall B Tractor Model – Features, Specifications, and Complete Review

Production: 1939 - 1947
farmall B

When it comes to modern farming, farmers need a tractor that balances power, efficiency, and versatility. The farmall B with a strong 20.4 HP engine, designed to meet the needs of small to medium farmers. , this model is a practical choice for those who want performance at an affordable cost.

In this blog, we’ll explore the features, specifications, benefits, and FAQs about the farmall B Tractor Model, so you can make an informed choice.


Key Features of farmall B

  • ✔️ Engine Power (20.4 HP): the tractor delivers excellent performance for ploughing, tilling, sowing, and hauling tasks.
  • ✔️ Tires: Front: 6-12 | Rear: 9-24

Production
Manufacturer Farmall (a part of International Harvester)
Note Row-Crop tractor
Factories Chicago, Illinois, USA
  Louisville, Kentucky, USA
Total built 75,241
Original price $770
Note The Farmall A and B were nearly identical tractors. The A featured an offset engine and wide front end. The B had a centered engine, seat offset to the right, and narrow front end.
Mechanical
Note Two-wheel drive
Note Manual steering
Note Open operator station.
Power Take-off (PTO)
Rear PTO Type 540
Dimensions & Tires
Weight 2400 lbs 1088 kg
Front tire 6-12
Rear tire 9-24
Note Full dimensions and tires ...
1939 - 1947
Note Row-Crop tractor
Belt Pulley
Diameter 8.5 inches 21 cm
Width 6 inches 15 cm
RPM 1157
Speed 2574 ft/min 784.56 meters/min
B Serial Number Location
Note Seat support bracket
B Serial Numbers
1939 FAB3675
1940 6744
1941 41500
1942 80739
1944 96390
1945 113218
1946 146700
1947 182964 (Chicago)
1947 200001 (Louisville)
Note FAQ: How to read a serial number table.
Farmall B Engines
Note International Harvester 1.9L 4-cyl gasoline
Note International Harvester 1.9L 4-cyl kerosene
Fuel tank 10 gal 37.9 L
Aux. fuel 1 gal 3.8 L
Note Engine details ...
Farmall B Power
Plows 1 (16 inch)
Drawbar (tested) 16.21 hp 12.1 kW
Belt (tested) 18.39 hp 13.7 kW
Note Performance test details ...
Farmall B Transmission
Note 4-speed sliding gear
Note Transmission details ...
General
Note 1939 - 1947
Note Row-Crop tractor
Photos
Note Farmall B photos...
References
Note Farmall Letter Series Tractors by Lee Klancher
Variants
B full width
BN narrow tread

Benefits

  • Perfect for Small & Medium Farmers: Good balance of power and efficiency for most farm operations.
  • Multi-purpose: Suitable for agriculture, haulage, landscaping, and horticulture.
  • Value for Money: Practical features with durable build quality.

FAQs

What is the horsepower?

👉 It comes with 20.4 HP.


Final Verdict

The farmall B is a reliable, versatile tractor for multiple uses. With its 20.4 HP, it offers excellent value for money.