| Production | |
| Manufacturer | New Holland |
| Row-Crop tractor | |
| Built in Racine, Wisconsin, USA | |
| New Holland T8.420 Engine | |
| FPT 8.7L 6-cyl diesel | |
| Fuel tank | 152 gal 575.3 L |
| Exhaust fluid (DEF) | 23.6 gal 89.3 L |
| New Holland T8.420 Transmission | |
| continuously variable transmission | |
| New Holland T8.420 Power | |
| Engine (gross) | 367 hp 273.7 kW |
| PTO (claimed) | 305 hp 227.4 kW |
| Drawbar (tested) | 255.76 hp 190.7 kW |
| PTO (tested) | 351.68 hp 262.2 kW |
| Mechanical | |
| Four-wheel drive | |
| Final drives | inboard planetary |
| Power steering | |
| Cab standard with air-conditioning. | |
| Photos | |
| No photos of the New Holland T8.420 are currently available. To submit yours, email it to Peter@TractorData.com. Photos may only be used with the permission of the original photographer. | |
| Hydraulics | |
| Type | closed center pressure flow compensating |
| Valves | 4 to 6 |
| Pump flow | 44 gpm 166.5 lpm |
|   | 75 gpm*With optional MegaFlow 283.9 lpm |
| Tractor hitch | |
| Rear Type | IVN/III |
| Control | electronic lower-link draft sensing |
| Rear lift | 17500 lbs 7938 kg |
|   | 19500 lbsOptOptional 8845 kg |
| Front Hitch | optional |
| Front lift | 12800 lbs 5806 kg |
| Drawbar | Cat. 4 |
| Power Take-off (PTO) | |
| Rear PTO | independent |
| Rear PTO Type | 1000 |
|   | 540/1000 |
| Engine RPM | 1000@1778 |
| Dimensions & Tires | |
| Wheelbase | 139.8 inches 355 cm |
| Weight | 30165 lbs 13682 kg |
| Front tire | 420/85R34L480/80R50 |
| Electrical | |
| Ground | negative |
| Charging system | alternator |
| Charging amps | 200 |
| Battery volts | 12 |
| Page information | |
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| TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. | |
| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on April 13, 2017 | |
| https://www.dmcretail.com/newholland - Official operator manuals from New Holland. |