Head to head · Row Crop

John Deere 8420 vs John Deere 8520

John Deere 8420 Tractor
John DeereModel A

John Deere 8420

Row Crop

power
270 hp
displacement
496 ci
Cylinders
6
Forward gears
16
Full 8420 specs
John Deere 8520 Tractor
John DeereModel B

John Deere 8520

Row Crop

power
293 hp
displacement
496 ci
Cylinders
6
Forward gears
16
Full 8520 specs
John DeereJohn Deere 8420
vs
John DeereJohn Deere 8520

How they compare

Headline specs vs. the whole Row Crop

n = 279–1,417

Engine Power

▲ 8520 higher · +23 hp (+9%)
8420270 hp
8520293 hp
Median Row Crop Tractor138 hp

8420 is in the 90th percentile; 8520 is in the 92nd · 1,206 models

Engine Displacement

= Effectively tied
8420496 ci
8520496 ci
Median Row Crop Tractor391 ci

8420 is in the 85th percentile; 8520 is in the 85th · 1,409 models

Cylinders

= Effectively tied
84206
85206
Median Row Crop Tractor6

8420 is in the 50th percentile; 8520 is in the 50th · 1,417 models

Forward Gears

= Effectively tied
842016
852016
Median Row Crop Tractor16

8420 is in the 50th percentile; 8520 is in the 50th · 1,200 models

8420 (A)8520 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecJohn Deere 8420John Deere 8520Difference
ManufacturerJohn DeereJohn DeereSame
Model84208520—
CategoryRow CropRow CropSame

Engine

SpecJohn Deere 8420John Deere 8520Difference
ManufacturerJohn DeereJohn DeereSame
ModelNot recordedJohn Deere—
Power Output270hp293hp▲ 8520+23 hp · +9%
Rated RPM2,200RPM2,200RPMSame
Cylinders66Same
Displacement496ci496ciSame
Bore4.6in4.6inSame
Stroke5.1in5.1inSame

Transmission

SpecJohn Deere 8420John Deere 8520Difference
TypeFull power shiftFull power shiftSame

Dimensions & Weight

SpecJohn Deere 8420John Deere 8520Difference
Length212in212inSame
Height122in122inSame
Operating Weight23,955lb23,975lb▲ 8520+20 lb · <1%

Hydraulics

SpecJohn Deere 8420John Deere 8520Difference
System TypeClosed center pressure-flow compensated (PFC)Closed center pressure-flow compensated (PFC)Same
Steering TypeHydrostatic powerHydrostatic powerSame

Power Take-off (PTO)

SpecJohn Deere 8420John Deere 8520Difference
TypeIndependent with hydraulic wet discs clutchIndependent—
Speed 11,000rpm1,000rpmSame
Speed 2540rpmNot recorded—
Speed 31,000rpmNot recorded—

Tires

SpecJohn Deere 8420John Deere 8520Difference
Rear Tire Size480/80R46Not recorded—

Hitch & Towing

SpecJohn Deere 8420John Deere 8520Difference
Hitch TypeIII/IIINThree-Point Hitch—
Hitch CategoryCategory 3Category 3Same
Hitch PositionRearRearSame
Hitch Capacity17,897lb17,897lbSame

Chassis & Drive

SpecJohn Deere 8420John Deere 8520Difference
Chassis Type4x4 MFWD 4WD4x4 MFWD 4WDSame
Drive Type4WD4WDSame
Steering TypeHydrostatic powerHydrostatic powerSame
Brake TypeHydraulic wet discHydraulic wet discSame

Electrical

SpecJohn Deere 8420John Deere 8520Difference
Starter TypeElectricElectricSame

Capacities

SpecJohn Deere 8420John Deere 8520Difference
Coolant9gal9galSame

Operator Station

SpecJohn Deere 8420John Deere 8520Difference
TypeCab (standard)Cab—

Category context

Both models against the field

Engine Power

median 138 hp
A · 90th percentile (270 hp)B · 92nd percentile (293 hp)

Engine Displacement

median 391 ci
A · 85th percentile (496 ci)B · 85th percentile (496 ci)

Cylinders

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

Forward Gears

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

Operating Weight

median 12,307 lb
A · 93rd percentile (23,955 lb)B · 93rd percentile (23,975 lb)
A · 8420B · 8520Median Row Crop Tractor
Full spec pageJohn Deere 8420Full spec pageJohn Deere 8520