Head to head · Row Crop

John Deere 8120 vs John Deere 8400

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John DeereModel A

John Deere 8120

Row Crop

power
200 hp
displacement
496 ci
Cylinders
6
Forward gears
16
Full 8120 specs
Image not recorded
John DeereModel B

John Deere 8400

Row Crop

power
225 hp
displacement
496 ci
Cylinders
6
Forward gears
16
Full 8400 specs
John DeereJohn Deere 8120
vs
John DeereJohn Deere 8400

How they compare

Headline specs vs. the whole Row Crop

n = 279–1,417

Engine Power

▲ 8400 higher · +25 hp (+13%)
8120200 hp
8400225 hp
Median Row Crop Tractor138 hp

8120 is in the 77th percentile; 8400 is in the 83rd · 1,206 models

Engine Displacement

= Effectively tied
8120496 ci
8400496 ci
Median Row Crop Tractor391 ci

8120 is in the 85th percentile; 8400 is in the 85th · 1,409 models

Cylinders

= Effectively tied
81206
84006
Median Row Crop Tractor6

8120 is in the 50th percentile; 8400 is in the 50th · 1,417 models

Forward Gears

= Effectively tied
812016
840016
Median Row Crop Tractor16

8120 is in the 50th percentile; 8400 is in the 50th · 1,200 models

8120 (A)8400 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecJohn Deere 8120John Deere 8400Difference
ManufacturerJohn DeereJohn DeereSame
Model81208400—
CategoryRow CropRow CropSame

Engine

SpecJohn Deere 8120John Deere 8400Difference
ManufacturerJohn DeereJohn DeereSame
ModelNot recordedJohn Deere—
Power Output200hp225hp▲ 8400+25 hp · +13%
Rated RPM2,200RPM2,200RPMSame
Cylinders66Same
Displacement496ci496ciSame
Bore4.6in4.6inSame
Stroke5.1in5.1inSame

Transmission

SpecJohn Deere 8120John Deere 8400Difference
TypeFull power shiftFull power shiftSame

Dimensions & Weight

SpecJohn Deere 8120John Deere 8400Difference
Length210in206in▲ 8120+4 in · +2%
Height120in120inSame
Operating Weight19,105lb19,191lb▲ 8400+86 lb · <1%

Hydraulics

SpecJohn Deere 8120John Deere 8400Difference
System TypeClosed center pressure-flow compensated (PFC)Closed center pressure-flow compensated (PFC)Same
Steering TypeHydrostatic powerPower—

Power Take-off (PTO)

SpecJohn Deere 8120John Deere 8400Difference
TypeIndependentIndependentSame
Speed 1540rpm1,000rpm▲ 8400+460 rpm · +85%
Speed 21,000rpm540rpm▲ 8120+460 rpm · +85%
Speed 3Not recorded1,000rpm—

Hitch & Towing

SpecJohn Deere 8120John Deere 8400Difference
Hitch TypeIII/IIIN3/3N—
Hitch CategoryIIINCategory 3—
Hitch PositionRearNot recorded—
Hitch Capacity12,353lb11,710lb▲ 8120+643 lb · +5%

Chassis & Drive

SpecJohn Deere 8120John Deere 8400Difference
Chassis TypeNot recorded4x4 MFWD 4WD—
Drive Type4x2 (2WD)MFWD 4WD—
Steering TypeHydrostatic powerPower—
Brake TypeHydraulic wet discDifferential hydraulic wet disc—

Electrical

SpecJohn Deere 8120John Deere 8400Difference
Starter TypeElectricElectricSame

Capacities

SpecJohn Deere 8120John Deere 8400Difference
Coolant9gal7.5gal▲ 8120+1.5 gal · +20%

Operator Station

SpecJohn Deere 8120John Deere 8400Difference
TypeCab (standard)CommandView Cab—

Category context

Both models against the field

Engine Power

median 138 hp
A · 77th percentile (200 hp)B · 83rd percentile (225 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 · 81st percentile (19,105 lb)B · 82nd percentile (19,191 lb)
A · 8120B · 8400Median Row Crop Tractor
Full spec pageJohn Deere 8120Full spec pageJohn Deere 8400