10 material differences · fewer than 12

Tractor oneFiat 55-66 (DT)1985–1992No measured PTO figureTractor twoUTB U-553 DT1988–1991No measured PTO figure

Which should you choose?

Read our verdict on the 55-66 (DT) 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.

10 material differences · 4 fields identical or within 5%, which is not counted as material

Fiat 55-66 (DT) and UTB U-553 DT, field by field
Field	55-66 (DT)	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	15.5–24.9 mph · 25–40 km/h	15.5 mph · 25 km/h	differs
Clutch declared	—	Dry UTB double clutch	—
Hydraulics & hitch
Pump flow declared	8.7 gpm · 32.8 L/min	9.0 gpm · 34.0 L/min	—
Pressure declared	3,046 psi · 210 bar	2,031 psi · 140 bar	+50% 55-66 (DT)
Rear PTO speeds declared	540/1000 rpm	540/1000 rpm	—
Weight & dimensions
Unladen weight declared	4,971 lb · 2,255 kg	6,889 lb · 3,125 kg	+39% U-553 DT
Maximum permissible mass declared	9,259 lb · 4,200 kg	—	—
Wheelbase declared	85.6 in · 2,175 mm	89.4 in · 2,270 mm	—
Length declared	125.4 in · 3,185 mm	148.4 in · 3,770 mm	+18% U-553 DT
Width declared	75.2 in · 1,910 mm	72.4–91.7 in · 1,839–2,329 mm	differs
Height, over the cab declared	90.7 in · 2,305 mm	98.4 in · 2,500 mm	+8% U-553 DT
Ground clearance declared	19.5 in · 495 mm	12.6 in · 320 mm	+55% 55-66 (DT)
Turning radius, braked declared	12.0 ft · 3.65 m	—	—
Fuel tank declared	77.1 qt · 73.0 L	65.5 qt · 62.0 L	+18% 55-66 (DT)

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