Compare/John Deere 8420 vs John Deere 8420T

John Deere 8420 vs John Deere 8420T

Verdict: John Deere 8420 vs John Deere 8420T

The John Deere 8420 and the John Deere 8420T are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 284 hp. John Deere 8420 is the lighter machine (21,650 kg vs 25,950 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

John Deere

Fit score

Best match

Clear

John Deere

Fit score

Best match

Clear

Rated power

284 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

With 18.4R46 rear tires.Reference

Fourth reverse at 1600 RPM.Reference

Steering

hydrostatic powerReference

electro-hydraulic powerReference

Trailer brakes

hydraulicReference

—

Drive

—

crawlerReference

Variants

8420

wheeled tractorReference

8420T

crawlerReference

Engine

Engine (gross)

211.8 kWReference

Engine (net)

201.3 kWReference

Engine (max)

234.1 kWReference

Drawbar (tested)

154.7 kWReference

153.5 kWReference

Displacement

8.1 LReference

Bore/Stroke

116 x 129 mmReference

Emissions

Tier IIReference

—

Rated Power (net)

201.3 kWReference

Rated Power (gross)

211.8 kWReference

Maximum Power (net)

223.7 kWReference

Maximum Power (gross)

234.1 kWReference

Fuel system

electronic high-pressure common rail (HPCR)Reference

—

Air cleaner

dry with secondary elementReference

—

Compression

16.5:1Reference

Rated RPM

2200Reference

Idle RPM

900-2300Reference

Operating RPM

1500-2200Reference

Starter volts

12Reference

Coolant capacity

34.0 LReference

Oil capacity

149.9 LReference

246.1 LReference

Oil change

250 hReference

Max power

154.7 kWReference

153.5 kWReference

Power at rated engine speed

175.6 kWReference

176.5 kWReference

Transmission

John Deere PowerShiftReference

Gears

16 forward and 4 reverseReference

PTO & Hydraulics

PTO (claimed)

175.2 kWReference

PTO (tested)

200.9 kWReference

201.8 kWReference

Hydraulic system

140.0 LReference

246.0 LReference

ILS Hydraulic system

149.9 LReference

—

Type

full power shiftReference

Capacity

140.0 LReference

246.0 LReference

ILS Capacity

149.9 LReference

—

Pressure

200.0 barReference

Valves

4 to 5Reference

5Reference

SCV flow

113.6 lpmReference

—

Total flow

160.9 lpmReference

Rear Type

III/IIINReference

Rear lift

7847 kgReference

6885 kgReference

Front Hitch

IIINReference

—

Front lift

4989 kgReference

—

Rear PTO

independentReference

Clutch

hydraulic wet discReference

—

Rear PTO Type

540/1000 (1.375 optional)Reference

1000 (1-3/4)Reference

Engine RPM

1000@2200Reference

—

Pump flow

—

113.6 lpmReference

Capacities

Fuel

605.6 LReference

492.1 LReference

Front hubs

3.4 LReference

—

ILS Front hubs

4.0 LReference

—

Front diff.

13.4 LReference

—

Max capacity

—

14288 kgReference

Dimensions

Wheelbase

298 cmReference

304 cmReference

Weight

21650 to 23780 poundsReference

25950 to 26380 poundsReference

Front tire

16.9R30Reference

—

Rear tire

18.4R46Reference

—

Ag front

16.9R30Reference

—

Ag rear

18.4R46Reference

—

Length

538 cmReference

557 cmReference

Height (cab)

310 cmReference

312 cmReference

Front axle

Independent Link SuspensionReference

—

Rack-and-pinion rear axle

119 by 3009 mmReference

—

4WD Front tread

152 to 203 cmReference

—

ILS Front tread

152 to 223 cmReference

—

Shipping

9820 kgReference

11770 kgReference

ILS Shipping

10455 kgReference

—

Operating

10786 kgReference

11965 kgReference

Max Drawbar

4536 kgReference

—

Clearance (rear axle)

—

55 cmReference

Clearance (drawbar)

—

44 cmReference

Ballasted

—

13061 kgReference

8420 Serial Numbers

2002

1001Reference

—

2003

10001Reference

—

2004

20001Reference

—

2005

30001Reference

—

Location:

Serial number plate on rear of tractor.Reference

Rear of tractorReference

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

150Reference

Batteries

2Reference

Battery CCA

925Reference

Battery volts

12Reference

Test results

Fuel use

51.5 l/hourReference

51.9 l/hourReference

Max pull

13591 kgReference

12352 kgReference

Speeds

8420T Serial Numbers

John Deere 8420T Tracks

Width

—

381 cmReference

Length on ground

—

226 cmReference

Area on ground

—

3.4 m²Reference

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.