Compare/John Deere 8320RT vs John Deere 9420

John Deere 8320RT vs John Deere 9420

Verdict: John Deere 8320RT vs John Deere 9420

The John Deere 8320RT and the John Deere 9420 are both tractors — here is how they stack up on the figures that matter. John Deere 8320RT leads on rated power with 320 hp against 312 hp. John Deere 8320RT is the newer design (2009 vs 2002). In short: choose the John Deere 8320RT for outright pulling power, or the John Deere 9420 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a 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

320 hp

312 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

Speed in R3 at 2300 RPM and R4 at 1500 RPM. Fifth reverse is dealer-installed option.Reference

With 800/70R38 tires.Reference

Drive

crawlerReference

—

Steering

electro-hydraulic powerReference

hydrostatic articulatedReference

Variants

8320R

wheeled tractorReference

—

9420T

—

crawler tractorReference

Engine

Engine (gross)

238.6 kWReference

—

Engine (net)

228.9 kWReference

—

Engine (max)

258.8 kWReference

—

Drawbar (tested)

167.9 kWReference

257.3 kWReference

Displacement

9.0 LReference

12.5 LReference

Bore/Stroke

118 x 136 mmReference

127 x 165 mmReference

Emissions

Stage IIIAReference

—

Rated Power (net)

228.9 kWReference

—

Rated Power (gross)

238.6 kWReference

—

Maximum Power (gross)

258.8 kWReference

—

Air cleaner

dual paper elementsReference

dryReference

Compression

16.3:1Reference

17:1Reference

Rated RPM

2100Reference

Operating RPM

1500-2100Reference

Starter

electricReference

—

Starter volts

12Reference

Coolant capacity

40.0 LReference

60.6 LReference

Oil capacity

258.6 LReference

137.8 LReference

Oil change

375 h (JD Plus-50 II oil)Reference

—

Max power

167.9 kWReference

257.3 kWReference

Power at rated engine speed

194.9 kWReference

232.8 kWReference

Fuel Type

DieselReference

—

No of Cylinders

6 cylinderReference

—

Emissions compliance

Tier 3 | selective catalyst reductionReference

—

Bore and stroke

4.66x5.35 inchesReference

—

Cooling system

liquid-cooledReference

—

Engine

—

316.9 kWReference

Power

—

316.9 kWReference

Transmission

Infinitely Variable Transmission (IVT)Reference

John Deere PowershiftReference

Gears

infinite forward and reverseReference

18 forward and 6 reverseReference

Oil type

JD Hy-GardReference

—

Transmission Type

IVTReference

—

forward and reverse options

infinite forward and reverseReference

—

Wheel Drive

4WDReference

—

PTO & Hydraulics

PTO (claimed)

193.9 kWReference

235.6 kWReference

PTO (tested)

221.8 kWReference

232.8 kWReference

Hydraulic system

258.5 LReference

117.3 LReference

Type

full power shiftReference

Capacity

258.5 LReference

117.3 LReference

Pressure

200.0 barReference

Valves

3 to 5Reference

4 or 5Reference

Pump flow

132.5 lpmReference

113.6 lpmReference

Total flow

227.1 lpmReference

295.2 lpmReference

Rear Type

IVN/IIIReference

IV/IVNReference

Rear lift (at 24"/610mm)

8754 kgReference

—

Rear PTO

independentReference

Rear PTO Type

1000 (1-3/4)Reference

1000Reference

Power at rated PTO speed

213.8 kWReference

256.1 kWReference

Rear lift

—

6552 kgReference

Capacities

Fuel

757.0 LReference

1022.0 LReference

Dimensions

Wheelbase

251 cmReference

350 cmReference

Length

567 cmReference

734 cmReference

Height (cab)

332 cmReference

—

Clearance (rear axle)

62 cmReference

—

Clearance (drawbar)

37 cmReference

43 cmReference

Weight

—

34870 to 37246 poundsReference

Front tire

—

710/70R42Reference

Rear tire

—

710/70R42Reference

Ag front

—

710/70R42Reference

Ag rear

—

710/70R42Reference

Clearance (front axle)

—

73 cmReference

Shipping

—

15817 kgReference

Operating

—

16894 kgReference

Ballasted

—

18804 kgReference

8320RT Serial Numbers

Location:

Right side of tractor.Reference

On the top-left of rear hinge memberReference

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

200Reference

140Reference

Batteries

2Reference

3Reference

Battery CCA

925Reference

Battery volts

12Reference

Total cold cranking amps

925 (each) CCAReference

—

John Deere 8320RT Tracks

Width

381 cmReference

293 cmReference

Test results

Fuel use

58.7 l/hourReference

76.8 l/hourReference

Max pull

15056 kgReference

17422 kgReference

Speeds

General

Make & Model

John DeereReference

—

Cruise control

TRUEReference

—

SCV control

JOYSTICKReference

—

Drawbar category

Cat 4, Cat 4 Heavy-Duty optionalReference

—

Country of manufacturer

USAReference

—

PTO

PTO Power

264 hpReference

—

Rear PTO Power

AvailableReference

—

Rear PTO RPM

1,000 RPMReference

—

Front PTO Power

AvailableReference

—

Steering & brakes

Brakes

Hydraulic wet disc brakesReference

—

Hydraulics

Remote Valves

4 to 6 VALVESReference

—

Rear Hitch category (SAE designation)

Category IVN/IIIReference

—

Rear Hitch maximum lift capacity

9,071.8 kgReference

—

Operator station

Cab Availability

AvailableReference

—

Seat Suspension

TRUEReference

—

9420 Serial Numbers

2002

—

1001Reference

2003

—

10001Reference

2004

—

20001Reference

2005

—

30001Reference

2006

—

40001Reference

2007

—

50001Reference

John Deere 9420 Height

Hood

—

247 cmReference

Cab

—

349 cmReference

Exhaust

—

355 cmReference

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.