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Farmall B

Farmall B tractor photo
1939 - 1947
Row-Crop tractor

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.


Manufacturer:Farmall (a part of International Harvester)
Factory:Chicago, Illinois, USA
 Louisville, Kentucky, USA
Total built:75,241
Original price (USD):$770


B:full width
BN:narrow tread

Farmall B Engines:

   International Harvester 1.9L 4-cyl gasoline
   International Harvester 1.9L 4-cyl kerosene
full engine details ...


Fuel:10 gal [37.9 L]
Aux. fuel:1 gal [3.8 L]

Power Take-off (PTO):

Rear RPM:540

Dimensions & Tires:

Weight:2400 lbs [1088 kg]
Front tire:6-12
Rear tire:9-24
full dimensions and tires ...

B Serial Numbers:

Location:Seat support bracket
photo of B serial number

1939: 501
1940: 6744
1941: 41500
1942: 80739
1944: 96390
1945: 113218
1946: 146700
1947: 182964 (Chicago)
1947: 200001 (Louisville)

how to read serial numbers...


Farmall B Power:

Plows:1 (16 inch)
Drawbar (tested):16.21 hp [12.1 kW]
Belt (tested):18.39 hp [13.7 kW]
power test details ...


Chassis:4x2 2WD
Cab:Open operator station.

Belt Pulley:

Diameter:8.5 inches [21 cm]
Width:6 inches [15 cm]
Speed:2574 ft/min [784.56 meters/min]

Page information:

Last update:December 2, 2019
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