Machine models

New Holland T8.420 specifications

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Listing-entry count
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Short answer

New Holland T8.420: tractor.

Selected configuration figures
ConfigurationDocumented field and quantity
T8.420
Maximum Power
419 hp
Weight
30,165 lb
T8.420 specification matrix — Engine
SpecificationT8.420
Fuel tank152 gal
Exhaust fluid (DEF)23.6 gal
EngineFPT 8.7L 6-cyl diesel
Transmission and speeds
SpecificationT8.420
Transmissioncontinuously variable transmission
Typecontinuously variable transmission
Gearsinfinite forward and reverse (4-range)
Power
SpecificationT8.420
Engine (gross)367 hp
PTO (claimed)305 hp
Drawbar (tested)255.76 hp
PTO (tested)351.68 hp
Mechanical
SpecificationT8.420
Final drivesinboard planetary
MechanicalFour-wheel drive; Power steering; Cab standard with air-conditioning
Hydraulics
SpecificationT8.420
Typeclosed center pressure flow compensating
Valves4 to 6
Pump flow44 gpm
Tractor hitch
SpecificationT8.420
Rear TypeIVN/III
Controlelectronic lower-link draft sensing
Rear lift17,500 lb
Front Hitchoptional
Front lift12,800 lb
DrawbarCat. 4
Power take-off (PTO)
SpecificationT8.420
Rear PTOindependent
Rear PTO Type1000
Engine RPM1000@1778
Dimensions & Tires
SpecificationT8.420
Wheelbase139.8 in
Weight30,165 lb
Front tire420/85R34L480/80R50
T8.420 Serial Number Location
SpecificationT8.420
T8.420 Serial Number LocationSerial number plate on the front-right of the tractor frame
Electrical
SpecificationT8.420
Groundnegative
Charging systemalternator
Charging amps200
Battery volts12
Engine Detail
SpecificationT8.420
Displacement531 cu in
Bore/Stroke4.606x5.315 in / 117 x 135 mm
EmissionsInterim Tier 4
Emission controlselective catalytic reduction (SCR)
Power (gross)367 hp
Maximum Power419 hp
Fuel systemelectronic high-pressure common rail
Cooling systemviscous fan
Air cleanerdual dry element
Compression15.9:1
Rated RPM2000
Starterelectric
Starter volts12
Engine DetailFPT F2C; turbocharged intercooled diesel; 6-cylinder
New Holland T8.420 Tires
SpecificationT8.420
Standard tires (ag)Front: 420/85R34L480/80R50 Rear:
Dimensions and weight
SpecificationT8.420
Length255 in
Operating weight30,165 lb
Front axleMFWD
Bar rear axle5 by 120 in / 127 by 3048 mm
Ratios
FigureT8.420
Engine horsepower per 1,000 lb of weight12.2
PTO power as a share of engine power83%
Pump flow per engine horsepower0.12 gpm
Fuel tank per engine horsepower0.41 gal

Where 367 horsepower falls

T8.420 engine-rating index
ModelT8.420
Recorded engine rating367 hp
Navigation bandAbove 60 hp
Related indexutility tractor guide
Meaning of this groupingSource ledger: Engine-rating navigation policy
Where the T8.420 ranks in New Holland's list — Scope of the captured comparison
BrandEquipment groupCompared entrySort order
New HollandtractorT8.420Descending quantity; 1 is largest
FigureT8.420RankLowest in lineHighest in line
Engine power367.0 hp3 of 2923.0 hp586.9 hp
Listed weight30,165 lb3 of 251,702 lb50,328 lb
PTO power305.0 hp3 of 2116.5 hp529.6 hp
Pump flow44.0 gpm2 (tied) of 276.0 gpm45.0 gpm
Fuel capacity152.0 gal7 of 246.6 gal440.0 gal
Horsepower per 1,000 lb12.2 hp13 of 258.1 hp16.1 hp

History and service record of T8.420

  • Series and production. TractorData places the T8.420 in the Genesis T8 Series of 2013 to 2014, between the T8.390 and the later T8.435, built in Racine, Wisconsin, with an FPT 8.7 L six-cylinder diesel, a continuously variable transmission, 367 hp gross and a claimed 305 hp at the PTO. Its listing records a tested PTO of 351.68 hp. New Holland T8.420, TractorData.
  • Launch. New Holland announced the Genesis T8 series in February 2015: six models from 273 to 419 hp with ECOBlue SCR Cursor 9 engines from FPT, the T8.420 being the top model at 419 hp and billed as the world's most powerful CVT tractor. New Holland introduces a new, modern Genesis tractor, Farm Equipment; New Holland T8.420, TractorData.
T8.420: dated market and recall observations — Dated listing search
DateListing indexEquipment classNames queriedResult
2026-09-24TractorHouse (tractorhouse.com)tractorT8.420No matching offers in this snapshot
Dated CPSC search
DateDatabaseNames queriedResult
2026-09-24U.S. Consumer Product Safety CommissionNew Holland; T8.420No matching recall in the stated search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Published history
Published history
Federal agency data

New Holland T8.420 questions

New Holland T8.420: Configuration records

T8.420
SpecificationSource figure
Engine
Fuel tank152 gal
Exhaust fluid (DEF)23.6 gal
Transmission and speeds
Transmissioncontinuously variable transmission
Gearsinfinite forward and reverse (4-range)
Power
PTO (tested)351.68 hp
Engine (gross)367 hp
PTO (claimed)305 hp
Drawbar (tested)255.76 hp
Mechanical
Final drivesinboard planetary
Hydraulics
Pump flow44 gpm
Valves4 to 6
Type — Hydraulicsclosed center pressure flow compensating
Tractor hitch
Rear TypeIVN/III
Controlelectronic lower-link draft sensing
DrawbarCat. 4
Rear lift17,500 lb
Front Hitchoptional
Front lift12,800 lb
Power take-off (PTO)
Rear PTOindependent
Rear PTO Type1000
Engine RPM1000@1778
Dimensions & Tires
Front tire420/85R34L480/80R50
Electrical
Groundnegative
Charging systemalternator
Charging amps200
Battery volts12
Engine Detail
Displacement531 cu in
Bore/Stroke4.606x5.315 in / 117 x 135 mm
EmissionsInterim Tier 4
Emission controlselective catalytic reduction (SCR)
Maximum Power419 hp
Rated RPM2000
Starterelectric
Starter volts12
Fuel systemelectronic high-pressure common rail
Cooling systemviscous fan
Compression15.9:1
Power (gross)367 hp
Air cleanerdual dry element
Tires
Standard tires (ag)Front: 420/85R34L480/80R50 Rear:
Dimensions and weight
Length255 in
Front axleMFWD
Bar rear axle5 by 120 in / 127 by 3048 mm
Operating weight30,165 lb
Additional specifications
EngineFPT 8.7L 6-cyl diesel
Typecontinuously variable transmission
MechanicalFour-wheel drive; Power steering; Cab standard with air-conditioning
Wheelbase139.8 in
Weight30,165 lb
Engine DetailFPT F2C; turbocharged intercooled diesel; 6-cylinder
T8.420 Serial Number LocationSerial number plate on the front-right of the tractor frame

Source

More in New Holland: T9.655–T9060, T9.390–T9050, T9.480–T9.645 SmartTrax II specs.