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John Deere 644B vs John Deere 644G

Verdict: John Deere 644B vs John Deere 644G

The John Deere 644B and the John Deere 644G are both industrial tractors — here is how they stack up on the figures that matter. John Deere 644G leads on rated power with 178 hp against 160 hp. John Deere 644B is the lighter machine (12,746 kg vs 15,983 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 644G holds more fuel (283.9 L vs 212.0 L) for longer stints between fills. John Deere 644G is the newer design (1992 vs 1974). In short: choose the John Deere 644G for outright pulling power, or the John Deere 644B if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Fit & specs
John Deere 644B Industrial Tractor
John Deere
94
Fit score
Best match
Clear
John Deere 644G Industrial Tractor
John Deere
94
Fit score
Best match
Clear
Rated power
160 hp
178 hp
Confidence
98%
98%
Guide price
Overview
Manufacturer
John DeereReference
John DeereReference
liquid-cooledReference
liquid-cooledReference
Final drives
inboard planetaryReference
inboard planetaryReference
Engine
Fuel tank
212.0 LReference
283.9 LReference
Engine (gross)
119.3 kWReference
132.7 kWReference
Engine (net)
108.1 kWReference
126.8 kWReference
Displacement
8.7 LReference
7.6 LReference
Bore/Stroke
121 x 127 mmReference
116 x 121 mmReference
Power (net)
108.1 kWReference
126.8 kWReference
Power (gross)
119.3 kWReference
132.7 kWReference
Air cleaner
dryReference
dryReference
Rated RPM
2200Reference
2200Reference
Torque
585.8 NmReference
810.9 NmReference
Torque RPM
1500Reference
1300Reference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
22.7 LReference
23.7 LReference
Coolant capacity
46.4 LReference
2839.2 LReference
Transmission
Gears
4 forward and 2 reverseReference
4 forward and 3 reverseReference
PTO & Hydraulics
Type
power shiftReference
power shiftReference
Pressure
155.1 barReference
206.8 barReference
Pump flow
236.6 lpmReference
263.1 lpmReference
Steering flow
100.3 lpmReference
Steering press.
162.0 barReference
Dimensions
Wheelbase
264 cmReference
320 cmReference
Weight
12746 kgReference
15983 kgReference
Front tire
20.5-25Reference
20.5-25Reference
Rear tire
20.5-25Reference
20.5-25Reference
Industrial front
17.5-25Reference
23.5-25Reference
Industrial rear
17.5-25Reference
23.5-25Reference
Length
645 cmReference
788 cmReference
Operating weight
12746 kgReference
15983 kgReference
Ground clearance
43 cmReference
Front tread
203 cmReference
216 cmReference
Rear tread
203 cmReference
216 cmReference
Width
273 cmReference
Height (cab)
342 cmReference
Height (exhaust)
315 cmReference
John Deere 644B attachments
Electrical
Charging system
alternatorReference
alternatorReference
Batteries
2Reference
Battery volts
12Reference
12Reference
Ground
negativeReference
John Deere 644B Height
ROPS
307 cmReference
Cab
322 cmReference
Exhaust
294 cmReference
John Deere 644G attachments

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.

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