9 material differences · fewer than 12
Tractor oneFiat 55-66 V/F (DT-V/F)1985–1992No measured PTO figureTractor twoUTB U-553 DT1988–1991No measured PTO figure
Which should you choose?
Read our verdict on the 55-66 V/F (DT-V/F) and the U-553 DT → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
9 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | 55-66 V/F (DT-V/F) | U-553 DT | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 54.3 hp | 54.3 hp | — |
| Engine declared | FIAT-IVECO 8035.06.206 or 306 | UTB D-121.000 | differs |
| Displacement declared | 2.71 L | 3.12 L | +15% U-553 DT |
| Maximum torque declared | 128 lb·ft · 174 N·m | — | — |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 15.5 mph · 25 km/h | +20% 55-66 V/F (DT-V/F) |
| Clutch declared | Dry Valeo or LuK double clutch | Dry UTB double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | — | 9.0 gpm · 34.0 L/min | — |
| Pressure declared | — | 2,031 psi · 140 bar | — |
| Rear PTO speeds declared | 540/1000 rpm | 540/1000 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 3,395 lb · 1,540 kg | 6,889 lb · 3,125 kg | +103% U-553 DT |
| Wheelbase declared | 72.6 in · 1,845 mm | 89.4 in · 2,270 mm | +23% U-553 DT |
| Length declared | 113.6 in · 2,885 mm | 148.4 in · 3,770 mm | +31% U-553 DT |
| Width declared | 53.5 in · 1,360 mm | 72.4–91.7 in · 1,839–2,329 mm | differs |
| Ground clearance declared | 12.8 in · 325 mm | 12.6 in · 320 mm | — |
| Fuel tank declared | 52.8 qt · 50.0 L | 65.5 qt · 62.0 L | +24% U-553 DT |
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 55-66 V/F (DT-V/F) sources
- Source: Traktorenlexikon, “Fiat 55-66 V/F/55-66 V/F/DT”
- Source: Traktorenlexikon, “Fiat 55-66/55-66 DT”
UTB U-553 DT sources
- Source: Traktorenlexikon, “UTB U 553 DT”