This page provides a detailed comparison of the specifications for the John Deere 6420 and the John Deere 6430.
| John Deere 6420 | John Deere 6430 | |
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| Engine | ||
| Engine Manufacturer | John Deere | John Deere |
| Engine Model | PowerTech 4045HL070 | 4045HL281 PowerTech E |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled with thermostat and variable speed fan |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Turbocharged | Turbocharged |
| Engine Cylinders | 4 | 4 |
| Engine Displacement Value | 276 ci (4.5 L) | 276 ci (4.5 L) |
| Engine Rated Rpm | 2300 | 1903 |
| Engine Power Output Value | 110 hp (82.0 kW) | 112 hp (83.9 kW) |
| Transmission | ||
| Transmission Type | Fully synchronized | Selective gear fixed ratio with partial power shift |
| Transmission Forward Gears | 12 | 12 |
| Transmission Reverse Gears | 4 | 4 |
| Dimensions | ||
| Length Value | 162.7 | - |
| Width Value | 61.8 | - |
| Operating Weight Value | 10472 lb (4750 kg) | 9985 lb (4529 kg) |
| Miscellaneous | ||
| Chassis | 4x4 MFWD 4WD | - |
| Drive Type | 4WD | 4x4 MFWD 4WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | - | Three-Point Hitch |
| Hitch Category | II | Category II |
| Hitch Position | - | Rear |
| Hitch Capacity Value | 4741 lb (2150 kg) | 4455 lb (2021 kg) |
| Hydraulic System Type | Closed center pressure flow compensated | Open-center load sensing |
| Operator Station Type | Open | Open, Cab (optional) |
| Starter Type | Electric | Electric Starter |
