Compare/John Deere 7R 290 vs John Deere 8420

John Deere 7R 290 vs John Deere 8420

Verdict: John Deere 7R 290 vs John Deere 8420

The John Deere 7R 290 and the John Deere 8420 are both tractors — here is how they stack up on the figures that matter. John Deere 7R 290 leads on rated power with 290 hp against 284 hp. John Deere 7R 290 is the lighter machine (66 kg vs 21,650 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 7R 290 is the newer design (2019 vs 2002). In short: choose the John Deere 7R 290 for outright pulling power, or the John Deere 8420 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a 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

290 hp

284 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

Gear 6 used for pull test.Reference

With 18.4R46 rear tires.Reference

Final drives

inboard planetaryReference

—

Differential lock

electro-hydraulic frontReference

—

Steering

—

hydrostatic powerReference

Trailer brakes

—

hydraulicReference

Engine

Engine (gross)

216.3 kWReference

211.8 kWReference

Engine (max)

237.9 kWReference

234.1 kWReference

Drawbar (tested)

172.3 kWReference

154.7 kWReference

Displacement

9.0 LReference

8.1 LReference

Bore/Stroke

118 x 136 mmReference

116 x 129 mmReference

Emissions

Tier IVReference

Tier IIReference

Rated Power (gross)

216.3 kWReference

211.8 kWReference

Maximum Power (gross)

237.9 kWReference

234.1 kWReference

Fuel system

electronic high-pressure common railReference

electronic high-pressure common rail (HPCR)Reference

Compression

16.0:1Reference

16.5:1Reference

Starter

electricReference

—

Starter volts

12Reference

Max power

172.3 kWReference

154.7 kWReference

Power at rated engine speed

190.3 kWReference

175.6 kWReference

Fuel Type

DieselReference

—

No of Cylinders

6Reference

—

Emissions compliance

Final Tier 4Reference

—

Engine torque at rated speed

Option 1: 2,100 rpm\\nOption 2: 1 ,Reference

—

Aspiration

Single turbocharger, variable geometry turboReference

—

Interval for engine oil change

500 hoursReference

—

Interval for engine coolant change

6,000 hoursReference

—

Cooling system

44.5 LReference

—

Engine (net)

—

201.3 kWReference

Rated Power (net)

—

201.3 kWReference

Maximum Power (net)

—

223.7 kWReference

Air cleaner

—

dry with secondary elementReference

Rated RPM

—

2200Reference

Idle RPM

—

900-2300Reference

Operating RPM

—

1500-2200Reference

Coolant capacity

—

34.0 LReference

Oil capacity

—

149.9 LReference

Oil change

—

250 hReference

Transmission

e23Reference

John Deere PowerShiftReference

Gears

infinite forward and reverseReference

16 forward and 4 reverseReference

Transmission Type

PowershiftReference

—

Wheel Drive

MFWDReference

—

Rear Axle Drive Type

Inboard planetary three pinionReference

—

Interval for hydraulic/transmission oil change

1,500 hoursReference

—

PTO & Hydraulics

PTO (claimed)

180.5 kWReference

175.2 kWReference

PTO (tested)

211.5 kWReference

200.9 kWReference

Hydraulic system

85.2 LReference

140.0 LReference

Type

infinitely variable transmissionReference

full power shiftReference

Capacity

85.2 LReference

140.0 LReference

Pressure

204.0 barReference

200.0 barReference

Rear valves

4 to 6Reference

—

Front valves

0 to 1Reference

—

Pump flow

223.3 lpmReference

—

SCV flow

124.9 lpmReference

113.6 lpmReference

Rear Type

III/IIINReference

Control

electro-hydraulic draft sensingReference

—

Rear lift (at 24"/610mm)

7847 kgReference

—

Front Hitch

IIINReference

Front lift (at ends)

3488 kgReference

—

Front lift (at 24"/610mm)

3172 kgReference

—

Rear PTO

independentReference

Rear PTO Type

1000 (1.75)Reference

540/1000 (1.375 optional)Reference

Engine RPM

1000E@1750Reference

1000@2200Reference

Front PTO

independentReference

—

Clutch

1000:1940Reference

hydraulic wet discReference

Front PTO Type

1000 (1.75)Reference

—

Power at rated PTO speed

208.2 kWReference

—

ILS Hydraulic system

—

149.9 LReference

ILS Capacity

—

149.9 LReference

Valves

—

4 to 5Reference

Total flow

—

160.9 lpmReference

Rear lift

—

7847 kgReference

Front lift

—

4989 kgReference

Capacities

Fuel

511.0 LReference

605.6 LReference

Exhaust fluid (DEF)

26.1 LReference

—

Fuel tank

513 LReference

—

Diesel exhaust fluid (DEF) tank

26.2 LReference

—

Crankcase oil volume

6.1 U.S. galReference

—

Front hubs

—

3.4 LReference

ILS Front hubs

—

4.0 LReference

Front diff.

—

13.4 LReference

Dimensions

Wheelbase

292 cmReference

298 cmReference

Front tire

420/85R34Reference

16.9R30Reference

Rear tire

480/80R50Reference

18.4R46Reference

Standard tires (ag)

Front: 420/85R34. Rear: 480/80R50Reference

—

Length

553 cmReference

538 cmReference

Clearance (front axle)

49 cmReference

—

Rack-and-pinion rear axle

119 by 3009 mmReference

Front tread

152 to 223 cmReference

—

Ag front

—

16.9R30Reference

Ag rear

—

18.4R46Reference

Height (cab)

—

310 cmReference

Front axle

—

Independent Link SuspensionReference

4WD Front tread

—

152 to 203 cmReference

ILS Front tread

—

152 to 223 cmReference

Shipping

—

9820 kgReference

ILS Shipping

—

10455 kgReference

Operating

—

10786 kgReference

Max Drawbar

—

4536 kgReference

John Deere 7R 290 attachments

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

250Reference

150Reference

Batteries

2Reference

Battery CCA

925Reference

Battery volts

12Reference

Battery Group

31Reference

—

Alternator size

210 ampReference

—

Battery options

12 VReference

—

Total cold cranking amps

With two 925 CCA group 31 batteries: 1,850 CCAReference

—

Test results

Fuel use

51.1 l/hourReference

51.5 l/hourReference

Max pull

11172 kgReference

13591 kgReference

General

Make & Model

MJDXL09.0,319Reference

—

SCV control

ElectronicReference

—

Drawbar Maximum vertical load

1,837 kgReference

—

Rear Axle Differential Lock

Full-locking electrohydraulicReference

—

Display

Standard: 4,600 Generation 4 CommandCenter™: 25.4 cm\\n10 in.Reference

—

Country of manufacturer

USAReference

—

Working lights

Standard: 18 halogen\\nAvailable: 18 LED or 22 LEDReference

—

Type of headlight bulb

Standard: 65-W halogen\\nAvailable: LEDReference

—

Power

Rated Power

290 hpReference

—

Front Hitch Electric Power

Seven-pin connectorReference

—

PTO

PTO Power

242 hpReference

—

PTO torque rise

40 percentReference

—

Rear PTO Control

Electric switch with adjustable modulationReference

—

Rear PTO Power

AvailableReference

—

Rear PTO RPM

540/540E/1,000 rpmReference

—

Front PTO Power

AvailableReference

—

Engine Speed on Front PTO speed

Option 1: 1,940 engine rpm\\nOption 2: 1,950 engine rpmReference

—

Hydraulics

Pump Rated Output (total)

222.3 l/minReference

—

Remote Valves

7Reference

—

Number of rear selective control valves (SCVs)

sixReference

—

Rear Hitch category (SAE designation)

Category 3N/3 with Quik-Coupler/Reference

—

Rear Hitch Sensing Type

ElectrohydraulicReference

—

Front Hitch category (SAE designation)

Category 3N, ground engagingReference

—

Front Hitch lift capacity beyond lift points

5,200 kg\\n11,464 lbReference

—

Dimensions & weight

Drawbar clearance

360 mmReference

—

Turning radius

6.7 mReference

—

Overall weight

9,979 kgReference

—

Weight

65.8 kg (Maximum ballast level)Reference

21650 to 23780 poundsReference

Wheels & tyres

Rear Wheel Type

RCI Group 47/48/49Reference

—

Operator station

Cab Availability

AvailableReference

—

Cab glass area

70.61 sq ftReference

—

Cab space

114 cu ftReference

—

Seat Suspension

AvailableReference

—

Variants

8420

—

wheeled tractorReference

8420T

—

crawlerReference

8420 Serial Numbers

2002

—

1001Reference

2003

—

10001Reference

2004

—

20001Reference

2005

—

30001Reference

Location:

—

Serial number plate on rear of tractor.Reference

Speeds

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.