Compare/John Deere 6125D vs John Deere 6145J

John Deere 6125D vs John Deere 6145J

Verdict: John Deere 6125D vs John Deere 6145J

The John Deere 6125D and the John Deere 6145J are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 123 hp. John Deere 6125D is the lighter machine (3,870 kg vs 11,290 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 6145J is the newer design (2010 vs 2008). 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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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

123 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

Three gears (1-3) plus reverse (R) in each of three ranges (A-C). Shifts between gears, including to reverse, are synchronized using the clutch. Shifts between ranges are not synchronized, the operator must stop the tractor and use the clutch.Reference

With 24.5-32 R1 rear tires. Reverse speeds are 15% faster than forward.Reference

Steering

hydrostatic powerReference

—

Differential lock

—

electro-hydraulicReference

Engine

Engine (gross)

91.7 kWReference

—

Displacement

4.5 LReference

6.8 LReference

Bore/Stroke

106 x 127 mmReference

Rated Power (gross)

91.7 kWReference

—

Air cleaner

dry element with pre-cleanerReference

—

Compression

17:1Reference

—

Rated RPM

2100Reference

Idle RPM

950-2275Reference

—

Firing order

1-3-4-2Reference

—

Starter

electricReference

—

Starter volts

12Reference

Coolant capacity

16.5 LReference

25.0 LReference

Intake valve clearance

0.356 mmReference

—

Exhaust valve clearance

0.457 mmReference

—

Oil capacity

57.9 LReference

19.0 LReference

Oil change

500 h (JD TorqGARD oil)Reference

—

Fuel tank

—

314.9 LReference

Engine

—

108.1 kWReference

Power

—

108.1 kWReference

Fuel system

—

rotary injection pumpReference

Torque

—

608.0 NmReference

Torque RPM

—

1400Reference

Transmission

John Deere Top Shaft Syncronized (TSS)Reference

John Deere PowrQuadReference

Gears

9 forward and 3 reverseReference

16 forward and reverseReference

PTO & Hydraulics

PTO (claimed)

78.3 kWReference

91.7 kWReference

Hydraulic system

57.9 LReference

—

Type

partially synchronziedReference

partial power shiftReference

Capacity

57.9 LReference

—

Pressure

195.1 barReference

200.0 barReference

Rear valves

2 to 3Reference

—

Pump flow

66.6 lpmReference

100.0 lpmReference

Steering flow

26.1 lpmReference

—

Rear Type

IIReference

Control

mechanical lower linkReference

electronic lower linkReference

Rear lift (at ends)

3469 kgReference

6799 kgReference

Rear lift (at 24"/610mm)

3150 kgReference

5279 kgReference

Rear PTO

independentReference

Clutch

dry discReference

hydraulic wet discsReference

Rear PTO Type

540/1000 (1.375)Reference

540/1000Reference

Engine RPM

1000@2100Reference

—

Valves

—

2Reference

SCV flow

—

99.8 lpmReference

Oil type

—

JD Hy-GardReference

Capacities

Fuel

157.8 LReference

—

Front axle

6.5 LReference

—

Front hubs

2.0 LReference

—

Dimensions

Wheelbase

234 cmReference

264 cmReference

Weight

3870 kgReference

11290 to 12460 poundsReference

Front tire

14.9-24Reference

18.4-26Reference

Rear tire

23.1-30Reference

24.5-32Reference

Standard tires (ag)

Front: 14.9-24. Rear: 23.1-30Reference

Front: 18.4-26. Rear: 24.5-32Reference

Length

421 cmReference

496 cmReference

Width

182 cmReference

—

Height (cab)

273 cmReference

—

Height (exhaust)

269 cmReference

—

Shipping weight

3870 kgReference

—

Max weight

6899 kgReference

—

Rear axle

1828 mmReference

—

Optional tires (ag)

—

Front: 16.9-24. Rear: 18.4-34Reference

Height

—

286 cmReference

Ground clearance

—

56 cmReference

Bar rear axle

—

86 by 2743 mmReference

Front tread

—

159 to 209 cmReference

Rear tread

—

168 to 264 cmReference

Ballasted

—

8001 kgReference

John Deere 6125D attachments

6125D Serial Numbers

Location:

Right side of main tractor frame above front axle.Reference

—

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

90 (cab)Reference

90Reference

Battery CCA

550Reference

—

Battery volts

12Reference

Battery AH

102Reference

150Reference

Battery Group

27Reference

—

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.