Head to head · Row Crop

Allis Chalmers D21 Series I vs Claas Arion 420

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Allis ChalmersModel A

Allis Chalmers D21 Series I

Row Crop

power
103 hp
displacement
426 ci
Cylinders
6
Forward gears
8
Full D21 Series I specs
Image not recorded
ClaasModel B

Claas Arion 420

Row Crop

power
105 hp
displacement
276 ci
Cylinders
4
Forward gears
16
Full Arion 420 specs
Allis ChalmersAllis Chalmers D21 Series I
vs
ClaasClaas Arion 420

How they compare

Headline specs vs. the whole Row Crop

n = 1,140–1,417

Engine Power

▲ Arion 420 higher · +2 hp (+2%)
D21 Series I103 hp
Arion 420105 hp
Median Row Crop Tractor138 hp

D21 Series I is in the 27th percentile; Arion 420 is in the 28th · 1,206 models

Engine Displacement

▲ D21 Series I higher · +150 ci (+54%)
D21 Series I426 ci
Arion 420276 ci
Median Row Crop Tractor391 ci

D21 Series I is in the 72nd percentile; Arion 420 is in the 26th · 1,409 models

Cylinders

▲ D21 Series I higher · +2 (+50%)
D21 Series I6
Arion 4204
Median Row Crop Tractor6

D21 Series I is in the 50th percentile; Arion 420 is in the 17th · 1,417 models

Forward Gears

▲ Arion 420 higher · +8 (+100%)
D21 Series I8
Arion 42016
Median Row Crop Tractor16

D21 Series I is in the 16th percentile; Arion 420 is in the 50th · 1,200 models

D21 Series I (A)Arion 420 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
ManufacturerAllis ChalmersClaas—
ModelD21 Series IArion 420—
CategoryRow CropRow CropSame

Engine

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
ManufacturerAllis ChalmersJohn Deere DPS—
Model34004045—
Power Output103hp105hp▲ Arion 420+2 hp · +2%
Rated RPM2,200RPM2,200RPMSame
Cylinders64▲ D21 Series I+2 · +50%
Displacement426ci276ci▲ D21 Series I+150 ci · +54%
Bore4.3in4.2in▲ D21 Series I+0.1 in · +2%
Stroke5in5inSame

Transmission

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
TypeSliding gear with dry disc clutchPower Shift—

Dimensions & Weight

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
Length161in175in▲ Arion 420+14 in · +9%
Width91.6inNot recorded—
Height107in109in▲ Arion 420+2 in · +2%
Operating Weight9,500lb10,800lb▲ Arion 420+1,300 lb · +14%

Hydraulics

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
System TypeNot recordedOpen Center—
Steering TypePowerPowerSame

Power Take-off (PTO)

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Tires

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
Front Tire SizeNot recorded14.9-24—
Rear Tire SizeNot recorded18.4-34—

Hitch & Towing

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIII/IINot recorded—
Hitch PositionRearNot recorded—

Chassis & Drive

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
Chassis Type4x2 2WD4x4 MFWD 4WD—
Drive Type2WD4WD—
Steering TypePowerPowerSame
Brake TypeBand actuated discNot recorded—

Electrical

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
Coolant5.3galNot recorded—

Operator Station

SpecAllis Chalmers D21 Series IClaas Arion 420Difference
TypeOpenNot recorded—

Category context

Both models against the field

Engine Power

median 138 hp
A · 27th percentile (103 hp)B · 28th percentile (105 hp)

Engine Displacement

median 391 ci
A · 72nd percentile (426 ci)B · 26th percentile (276 ci)

Cylinders

median 6
A · 50th percentile (6)B · 17th percentile (4)

Forward Gears

median 16
A · 16th percentile (8)B · 50th percentile (16)

Operating Weight

median 12,307 lb
A · 28th percentile (9,500 lb)B · 37th percentile (10,800 lb)
A · D21 Series IB · Arion 420Median Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IFull spec pageClaas Arion 420