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Tractors > Allis Chalmers > D21 Series I

Allis Chalmers D21 Series I

Allis Chalmers D21 Series I tractor photo
1963 - 1969   D Series
Model years
Row-Crop tractor

The D21 was the first Allis Chalmers tractor to have over 100 horsepower. The upgraded D21 II began at serial number 2201 in 1965.


Manufacturer:Allis Chalmers
Factory:West Allis, Wisconsin, USA
Total built:1,129
Original price (USD)
   $5,700 (1964 )

Allis Chalmers D21 Engine:

   Allis Chalmers 7.0L 6-cyl diesel
full engine details ...


Fuel:52 gal [196.8 L]

3-Point Hitch:

Rear Type:III/II

Power Take-off (PTO):

Rear PTO:independent
Rear RPM:1000

Dimensions & Tires:

Wheelbase:96.1 inches [244 cm]
Weight:9500 lbs [4309 kg]
Front tire:7.50x20
Rear tire:18.4x34
full dimensions and tires ...

D21 Serial Numbers:

Location:Serial number on the left side of the Allis-Chalmers D21, stamped into the flange near the starter mounting.
1963: 100
1964: 1417
1965: 2079
1966: 2408
1967: 2863
1968: 3777
1969: 4498

how to read serial numbers...


Allis Chalmers D21 Power:

Drawbar (claimed):93 hp [69.4 kW]
PTO (claimed):103 hp [76.8 kW]
Drawbar (tested):93.09 hp [69.4 kW]
PTO (tested):103.06 hp [76.9 kW]
power test details ...


Chassis:4x2 2WD
Brakes:band actuated disc
Cab:Open operator station.
Steering flow:5.25 gpm [19.9 lpm]
Steering press.:1300 psi [89.6 bar]


Charging system:Delco-Remy generator
Charging amps:32



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Last update:November 21, 2017
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