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John Deere 8420 Specs
John Deere 8420 agricultural tractor specifications: tractor type Row-Crop Tractor, horsepower 201.4 kW, weight 10785.0 kg, lift capacity 4990.0 kg.
Manufacturer specifications
| Specification | Metric | Imperial |
|---|---|---|
| Tractor Type | Row-Crop Tractor | |
| Horsepower | 201.4 kW | 270.1 HP |
| Weight | 10785.0 kg | 480/80R46 duals: 23776.8 lbs |
| Lift Capacity | 4990.0 kg | 11001.1 lbs |
| Transmission Type | Full power shift with hydraulic wet disc clutch | |
| Length | 538.0 cm | 211.8 in. |
| Years Made | 2002-2005 | |
| Engine Model | John Deere | |
| Engine Type | 4-stroke, liquid-cooled, inline | |
| Fuel Type | Diesel | |
| Cylinders | 6 | |
| Displacement | 8128 cc | 496.0 cu in. |
| Bore | 11.61 cm | 4.57 in. |
| Stroke | 12.90 cm | 5.08 in. |
| Rear PTO Type | Independent with hydraulic wet discs clutch | |
| Rear PTO Speed | 1000, 540/1000 RPM | |
| Rated RPM | 2200 RPM | |
| Compression Ratio | 16.5:1 | |
| Battery | Two 12V, CCA 925A | |
| Starter | Electric | |
| Height | 310.0 cm | Cab Height: 122.0 in. |
| Wheelbase | 298.0 cm | 118.9 in. (302.0 cm) ILS: 117.3 in. |
| Fuel Tank Capacity | 605.6 l | 160.0 gal |
| Oil Capacity | 27.0 l | 7.1 gal |
| Coolant Capacity | 34.0 l | 9.0 gal |
| Transmission Oil Capacity | 149.9 l | 37.0 gal (140.1 l) ILS: 39.6 gal |
| Transmission Model | John Deere PowerShift | |
| Gears | 16 forward and 4 reverse | |
| Chassis | 4×4 MFWD 4WD | |
| Max. Travel Speed | 10.9 km/h | Forward: 24.8 MPH (39.9 km/h) Reverse: 6.8 MPH |
| Brakes | Hydraulic wet disc | |
| Drawbar Category | IIIN | |
| Cabin Type | Cab | |
| Steering Type | Hydrostatic power | |
| Front Tires | Ag: 16.9R30 | |
| Rear Tires | Ag: 18.4R46 | |
| Hydraulic Type | Closed center pressure-flow compensated | |
| Total Flow | 126.8 LPM | 42.5 GPM (160.9 LPM) 33.5 GPM |
| SCV Flow | 113.6 LPM | 30.0 GPM |
| Working Pressure | 199.9 bar | 2900.0 psi |
| Valves | 4 to 5 |
Source: heavyequipments.net archive (imported 2026-10). Values may vary by variant and production year; seller claims are shown separately on the listing page.
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