10 material differences · fewer than 12
Tractor oneFiat 420 (DT)1978–1985No measured PTO figureTractor twoRenault 4211972–1977No measured PTO figure
Which should you choose?
Read our verdict on the 420 (DT) and the 421 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
10 material differences · 5 fields identical or within 5%, which is not counted as material
| Field | 420 (DT) | 421 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 41.4 hp | 41.4 hp | — |
| Engine declared | FIAT-IVECO 8035.01.308 | MWM D 327-3 | differs |
| Displacement declared | 2.34 L | 2.83 L | +21% 421 |
| Maximum torque declared | 106 lb·ft · 144 N·m | 127 lb·ft · 172 N·m | +19% 421 |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 15.5 mph · 25 km/h | — |
| Clutch declared | pedal-operated, two-stage dry FEREDO double clutch | Dry VERTO double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | — | 6.8 gpm · 25.9 L/min | — |
| Pressure declared | 2,843 psi · 196 bar | — | — |
| Three-point lift, at the coupling points declared | 2,381 lb · 1,080 kg | 4,497 lb · 2,040 kg | +89% 421 |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 3,638 lb · 1,650 kg | 4,817 lb · 2,185 kg | +32% 421 |
| Wheelbase declared | 74.8 in · 1,900 mm | 78.0 in · 1,982 mm | — |
| Length declared | 113.4 in · 2,880 mm | 130.4 in · 3,312 mm | +15% 421 |
| Width declared | 65.2–81.1 in · 1,657–2,059 mm | 66.1–83.9 in · 1,680–2,130 mm | — |
| Ground clearance declared | 17.7 in · 450 mm | 15.7 in · 400 mm | +13% 420 (DT) |
| Turning radius, braked declared | 9.7 ft · 2.95 m | 10.9 ft · 3.31 m | +12% 421 |
| Fuel tank declared | 38.0 qt · 36.0 L | 50.7 qt · 48.0 L | +33% 421 |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
Fiat 420 (DT) sources
- Source: Traktorenlexikon, “Fiat 420/420 DT”
Renault 421 sources
- Source: Traktorenlexikon, “Renault 421 R7431”
- Source: Traktorenlexikon, “Renault 461 R7441”