Compare/John Deere 4020 Hi-Crop vs John Deere 6420

John Deere 4020 Hi-Crop vs John Deere 6420

Verdict: John Deere 4020 Hi-Crop vs John Deere 6420

The John Deere 4020 Hi-Crop and the John Deere 6420 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 94 hp. John Deere 4020 Hi-Crop is the lighter machine (9,170 kg vs 10,064 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 6420 is the newer design (2002 vs 1963). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

John Deere

Fit score

Best match

Clear

John Deere

Fit score

Best match

Clear

Rated power

94 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

Power Shift allows shift-on-the-move between gears without clutching.Reference

Continuously-variable transmission with built-in creeper and left-hand reverser lever. Speed-adjusting dial sets the maximum speed for each band. Setting maximum speed of Band 1 to less than 2 KPH (1.3 MPH) engages creeper mode. Only available on cab tractors.Reference

Total built

19 (LP-gas)Reference

—

Original price

—

$44,000 (2007)Reference

Steering

—

hydrostatic powerReference

Variants

600

industrialReference

—

4020

row-cropReference

—

6420

—

utility chassisReference

4020S

standardReference

—

4020HC

high-cropReference

—

6420L

—

low-profile chassisReference

Engine

Displacement

5.9 LReference

4.5 LReference

Bore/Stroke

108 x 108 mmReference

106 x 127 mmReference

Compression

9.0:1Reference

—

Rated RPM

2200Reference

2300Reference

Idle RPM

600-2500Reference

845-2465Reference

Operating RPM

1500-2200Reference

1000-2300Reference

Firing order

1-5-3-6-2-4Reference

1-3-4-2Reference

Starter

electricReference

—

Starter volts

12 (late)Reference

12Reference

Coolant capacity

22.7 LReference

13.6 LReference

Intake valve clearance

0.457 mmReference

0.356 mmReference

Exhaust valve clearance

0.457 mmReference

Oil capacity

64.4 LReference

60.0 LReference

Starter type

12Reference

—

Engine

—

82.0 kWReference

Drawbar (tested)

—

56.2 kWReference

Emissions

—

Tier IIReference

Power

—

82.0 kWReference

Air cleaner

—

dryReference

Torque

—

469.2 NmReference

Torque RPM

—

1500Reference

Starter power

—

3.0 kWReference

Oil change

—

500 hReference

Max power

—

56.2 kWReference

Power at rated engine speed

—

70.3 kWReference

Transmission

Power ShiftReference

John Deere IVTReference

Gears

8 forward and 4 reverseReference

infinite forward and reverseReference

Oil type

303 SpecialReference

JD Hy-GardReference

Clutch

—

wet discReference

PTO & Hydraulics

PTO (claimed)

70.1 kWReference

67.1 kWReference

Type

full power shiftReference

infinitely variable transmissionReference

Total flow

83.3 lpmReference

—

Rear Type

IIReference

Rear PTO

independentReference

Rear PTO Type

1000Reference

540/1000Reference

Mid PTO

independentReference

—

Mid PTO Type

1000Reference

—

PTO (tested)

—

77.5 kWReference

Hydraulic system

—

60.2 LReference

Capacity

—

60.2 LReference

Pressure

—

200.0 barReference

Valves

—

4Reference

Pump flow

—

94.6 lpmReference

Rear lift

—

2152 kgReference

Engine RPM

—

1000@2185Reference

Front PTO

—

optionalReference

Front PTO Type

—

1000Reference

Power at rated PTO speed

—

71.6 kWReference

Dimensions

Wheelbase

254 cmReference

240 cmReference

Weight

9170 to 9235 poundsReference

10064 to 11110 poundsReference

Front tire

7.50-20Reference

10.00-16Reference

Rear tire

15.5-38Reference

18.4-34 (2WD)Reference

Ag front

7.50-20Reference

—

Ag rear

18.4-34Reference

—

Length

383 cmReference

413 cmReference

Width

240 cmReference

—

Height

268 cmReference

249 cmReference

Height (steering wheel)

240 cmReference

—

LP-gas Shipping weight

4159 kgReference

—

Diesel Shipping weight

4188 kgReference

—

Clearance (front axle)

99 cmReference

45 cmReference

Clearance (rear axle)

73 cmReference

—

Front tread

152 to 213 cmReference

151 to 201 cmReference

Rear tread

185 to 246 cmReference

160 to 230 cmReference

Standard tires (ag)

—

Front: 13.6-24. Rear: 18.4-34 (4WD)Reference

Min Width

—

156 cmReference

Shipping

—

4751 kgReference

Operating

—

5039 kgReference

Max front axle

—

5499 kgReference

Max rear axle

—

6497 kgReference

4020 Hi-Crop Serial Number Location

Electrical

Ground

floating (24V)Reference

negativeReference

Charging system

alternator (late)Reference

alternatorReference

Batteries

4 (24V)Reference

—

Battery volts

6Reference

12Reference

Charging amps

—

150Reference

Battery AH

—

154Reference

Speeds

Capacities

Fuel

—

185.1 LReference

Max capacity

—

7999 kgReference

6420 Serial Numbers

Location:

—

Serial number plate on the right side of the tractor's main frame.Reference

Test results

Fuel use

—

21.2 l/hourReference

Max pull

—

4497 kgReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.