Head to head · Row Crop

John Deere 8320 vs John Deere 8420

John Deere 8320 Tractor
John DeereModel A

John Deere 8320

Row Crop

power
248 hp
displacement
496 ci
Cylinders
6
Forward gears
16
Full 8320 specs
John Deere 8420 Tractor
John DeereModel B

John Deere 8420

Row Crop

power
270 hp
displacement
496 ci
Cylinders
6
Forward gears
16
Full 8420 specs
John DeereJohn Deere 8320
vs
John DeereJohn Deere 8420

How they compare

Headline specs vs. the whole Row Crop

n = 279–1,417

Engine Power

▲ 8420 higher · +22 hp (+9%)
8320248 hp
8420270 hp
Median Row Crop Tractor138 hp

8320 is in the 87th percentile; 8420 is in the 90th · 1,206 models

Engine Displacement

= Effectively tied
8320496 ci
8420496 ci
Median Row Crop Tractor391 ci

8320 is in the 85th percentile; 8420 is in the 85th · 1,409 models

Cylinders

= Effectively tied
83206
84206
Median Row Crop Tractor6

8320 is in the 50th percentile; 8420 is in the 50th · 1,417 models

Forward Gears

= Effectively tied
832016
842016
Median Row Crop Tractor16

8320 is in the 50th percentile; 8420 is in the 50th · 1,200 models

8320 (A)8420 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecJohn Deere 8320John Deere 8420Difference
ManufacturerJohn DeereJohn DeereSame
Model83208420—
CategoryRow CropRow CropSame

Engine

SpecJohn Deere 8320John Deere 8420Difference
ManufacturerJohn DeereJohn DeereSame
Power Output248hp270hp▲ 8420+22 hp · +9%
Rated RPM2,200RPM2,200RPMSame
Cylinders66Same
Displacement496ci496ciSame
Bore4.6in4.6inSame
Stroke5.1in5.1inSame

Transmission

SpecJohn Deere 8320John Deere 8420Difference
TypeFull power shiftFull power shiftSame

Dimensions & Weight

SpecJohn Deere 8320John Deere 8420Difference
Length210in212in▲ 8420+2 in · <1%
Height120in122in▲ 8420+2 in · +2%
Operating Weight20,205lb23,955lb▲ 8420+3,750 lb · +19%

Hydraulics

SpecJohn Deere 8320John Deere 8420Difference
System TypeClosed center pressure-flow compensated (PFC)Closed center pressure-flow compensated (PFC)Same
Steering TypeHydrostatic powerHydrostatic powerSame

Power Take-off (PTO)

SpecJohn Deere 8320John Deere 8420Difference
TypeIndependentIndependent with hydraulic wet discs clutch—
Speed 11,000rpm1,000rpmSame
Speed 2Not recorded540rpm—
Speed 3Not recorded1,000rpm—

Tires

SpecJohn Deere 8320John Deere 8420Difference
Rear Tire SizeNot recorded480/80R46—

Hitch & Towing

SpecJohn Deere 8320John Deere 8420Difference
Hitch TypeIII/IIINIII/IIINSame
Hitch CategoryCategory 3Category 3Same
Hitch PositionRearRearSame
Hitch Capacity15,387lb17,897lb▲ 8420+2,510 lb · +16%

Chassis & Drive

SpecJohn Deere 8320John Deere 8420Difference
Chassis Type4x4 MFWD 4WD4x4 MFWD 4WDSame
Drive TypeFront Wheel Assist4WD—
Steering TypeHydrostatic powerHydrostatic powerSame
Brake TypeHydraulic wet discHydraulic wet discSame

Electrical

SpecJohn Deere 8320John Deere 8420Difference
Starter TypeElectricElectricSame

Capacities

SpecJohn Deere 8320John Deere 8420Difference
Coolant9gal9galSame

Operator Station

SpecJohn Deere 8320John Deere 8420Difference
TypeCabCab (standard)—

Category context

Both models against the field

Engine Power

median 138 hp
A · 87th percentile (248 hp)B · 90th percentile (270 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 · 85th percentile (20,205 lb)B · 93rd percentile (23,955 lb)
A · 8320B · 8420Median Row Crop Tractor
Full spec pageJohn Deere 8320Full spec pageJohn Deere 8420