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Manufacturer-sourced values side by side. No performance equivalence or ranking is applied across different machine classes.

FeatureJohn Deere 8420TractorJohn Deere 8220Tractor
Tractor TypeRow-Crop TractorRow-Crop Tractor
Horsepower201.4 kW167.8 kW
Weight10785.0 kg—
Lift Capacity4990.0 kg4900.0 kg
Transmission TypeFull power shift with hydraulic wet disc clutchFull power shift with hydraulic wet disc clutch
Length538.0 cm538.0 cm
Years Made2002-20052002-2005
Engine ModelJohn DeereJohn Deere
Engine Type4-stroke, liquid-cooled, inline4-stroke, liquid-cooled, inline
Fuel TypeDieselDiesel
Cylinders66
Displacement8128 cc8128 cc
Bore11.61 cm11.61 cm
Stroke12.90 cm12.90 cm
Rear PTO TypeIndependent with hydraulic wet discs clutchIndependent with electro-hydraulic wet disc clutch
Rear PTO Speed1000, 540/1000 RPM1000 or 540/1000 RPM
Rated RPM2200 RPM2200 RPM
Compression Ratio16.5:116.5:1
BatteryTwo 12V, CCA 925ATwo 12V, CCA 925A
StarterElectricElectric
Height310.0 cm305.0 cm
Wheelbase298.0 cm296.0 cm
Fuel Tank Capacity605.6 l605.6 l
Oil Capacity27.0 l23.5 l
Coolant Capacity34.0 l34.0 l
Transmission Oil Capacity149.9 l149.9 l
Transmission ModelJohn Deere PowerShiftJohn Deere PowerShift
Gears16 forward and 4 reverse16 forward and 4 reverse
Chassis4×4 MFWD 4WD4×2 2WD or 4×4 MFWD 4WD
Max. Travel Speed10.9 km/h10.9 km/h
BrakesHydraulic wet discHydraulic wet disc
Drawbar CategoryIIINIIIN
Cabin TypeCabCab
Steering TypeHydrostatic powerHydrostatic power
Front TiresAg: 16.9R30Ag: 11.00-24 , 16.9R30
Rear TiresAg: 18.4R46Ag: 18.4R46
Hydraulic TypeClosed center pressure-flow compensatedClosed center pressure-flow compensated
Total Flow126.8 LPM160.9 LPM
SCV Flow113.6 LPM113.6 LPM
Working Pressure199.9 bar199.9 bar
Valves4 to 55
Hydraulic Capacity—149.9 l
Sourceheavyequipments.net archive (imported 2026-10)heavyequipments.net archive (imported 2026-10)
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Side-by-side specification comparisons generated from the manufacturer-sourced model files. · 7,051