Fiat 55-66 S (DT) vs UTB U-553 DT
14 material differences
Which should you choose?
We will not advise between these two machines, because the drive differs (Two-wheel or four-wheel drive; 4WD); they were not built in overlapping years (1992–1995; 1988–1991). The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.
Field by field
14 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | 55-66 S (DT) | U-553 DT | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 54.3 hp | 54.3 hp | — |
| Engine declared | FIAT-IVECO 8035.06 | UTB D-121.000 | differs |
| Displacement declared | 2.71 L | 3.12 L | +15% U-553 DT |
| Maximum torque declared | 130 lb·ft · 176 N·m | — | — |
| Transmission | |||
| Top speed declared | 18.6–24.9 mph · 30–40 km/h | 15.5 mph · 25 km/h | differs |
| Clutch declared | Dry OMG or LuK double clutch | Dry UTB double clutch | differs |
| Hydraulics & hitch | |||
| Hydraulic centre declared | Open centre | — | — |
| Pump flow declared | 9.1 gpm · 34.5 L/min | 9.0 gpm · 34.0 L/min | — |
| Pressure declared | 3,118 psi · 215 bar | 2,031 psi · 140 bar | +54% 55-66 S (DT) |
| Three-point lift at ends declared | 6,614 lb · 3,000 kg | 5,776 lb · 2,620 kg | +15% 55-66 S (DT) |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 5,809 lb · 2,635 kg | 6,889 lb · 3,125 kg | +19% U-553 DT |
| Maximum permissible mass declared | 8,488 lb · 3,850 kg | — | — |
| Wheelbase declared | 78.7 in · 1,999 mm | 89.4 in · 2,270 mm | +14% U-553 DT |
| Length declared | 127.6 in · 3,241 mm | 148.4 in · 3,770 mm | +16% U-553 DT |
| Width declared | 60.6 in · 1,540 mm | 72.4 in · 1,839 mm | +19% U-553 DT |
| Height declared | 89.4 in · 2,270 mm | 98.4 in · 2,500 mm | +10% U-553 DT |
| Ground clearance declared | 18.1 in · 460 mm | 12.6 in · 320 mm | +44% 55-66 S (DT) |
| Fuel tank declared | 77.1 qt · 73.0 L | 65.5 qt · 62.0 L | +18% 55-66 S (DT) |
Fiat 55-66 S (DT) sources
Source
- Source: Traktorenlexikon, “Fiatagri 55-66S/55-66 DTS”
- Source: Traktorenlexikon, “Fiat 50-66/50-66 DT”
UTB U-553 DT sources
Source
- Source: Traktorenlexikon, “UTB U 553 DT”