Fiat 55-90
The Fiat 55-90 is a tractor produced by Fiat. It is equipped with a 165.4 ci 2.7 L engine. The listed engine power is Diesel (listed): 55 hp / 41.0 kW. Transmission: 20 forward and 8 reverse. Operating weight: 6526 to 6923 pounds.
Engine Power
Diesel (listed): 55 hp / 41.0 kW
Fuel & Capacities
24.6 gal
93.1 L
Transmission
20 forward and 8 reverse
Operating Weight
6526 to 6923 pounds
Overview
 | 1984 - 1992
90 SeriesUtility tractor
90 Series
Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Fiat |
Utility tractor | |
Variants | |
|---|---|
55-90 | 2WD |
55-90DT | 4WD |
Fiat 55-90 Engine | |
|---|---|
Fiat 2.7L 3-cyl diesel | |
Fuel tank | 24.6 gal
93.1 L |
Engine details ...  | |
Fiat 55-90 Power | |
|---|---|
Engine | 55 hp
41.0 kW |
Mechanical | |
|---|---|
Two- or four-wheel drive | |
Final drives | planetary |
Differential lock | hydraulic rear |
Power steering | |
Hydraulic wet disc brakes | |
Cab standard with heater. | |
Hydraulics | |
|---|---|
Pump flow | 8.9 gpm
33.7 lpm |
Tractor hitch | |
|---|---|
Rear Type | II/I |
Rear lift | 6393 lbs
2899 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Clutch | 280mm dry disc |
Rear PTO Type | 540 |
540/1000 | |
Engine RPM | 540@2200 |
1000@2375 | |
Dimensions & Tires | |
|---|---|
2WD Wheelbase | 87.8 inches
223 cm |
4WD Wheelbase | 86.6 inches
219 cm |
Weight | 6526 to 6923 pounds |
Front tire | 7.50-16 |
2WD Rear tire | 16.9-28 |
Full dimensions and tires ...  | |
Engine
Engine Detail — 165.4 ci / 2.7 L Diesel
Manufacturer | Fiat 8035.06 |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled |
Displacement | 165.4 ci
2.7 L |
Bore/Stroke | 3.94x4.53 inches
100 x 115 mm |
Power | 55 hp
41.0 kW |
Air cleaner | oil bath |
Rated RPM | 2500 |
Starter type | electric |
Transmission
Transmission options | |
|---|---|
12-speed | |
12-speed shuttle | |
20-speed creeper |
Transmission — 12 forward and 4 reverse
Gears | 12 forward and 4 reverse |
Clutch | 280mm dry disc |
Four gears (1-4) in three ranges (low, medium, high) plus reverse range. | |
 | |
Transmission — 12 forward and reverse shuttle
Type | shuttle |
Gears | 12 forward and reverse |
Clutch | 280mm dry disc |
Four gears (1-4) in three ranges (low, medium, high) with left-hand shuttle. | |
 | |
Transmission — 20 forward and 8 reverse creeper
Type | creeper |
Gears | 20 forward and 8 reverse |
Clutch | 280mm dry disc |
Additional two forward and one reverse creeper ranges added to the basic transmission. | |
 | |
Dimensions
Fiat 55-90 Tires | |
|---|---|
2WD Standard tires (ag) | Front: 7.50-16. Rear: 16.9-28 |
4WD Standard tires (ag) | Front: 12.4-20. Rear: 16.9-28 |
2WD Optional tires (ag) | Front: 7.50-16. Rear: 12.4-36 |
4WD Optional tires (ag) | Front: 11.2-24. Rear: 12.4-36 |
Dimensions | |
|---|---|
2WD Wheelbase | 87.8 inches
223 cm |
4WD Wheelbase | 86.6 inches
219 cm |
Length | 132.3 inches
336 cm |
2WD Height (cab) | 98.4 inches
249 cm |
4WD Height (cab) | 99.6 inches
252 cm |
2WD Weight | 6526 lbs
2960 kg |
4WD Weight | 6923 lbs
3140 kg |
2WD Front tread | 55.1 to 74.8 inches
139 to 189 cm |
4WD Front tread | 61 to 74 inches
154 to 187 cm |
Rear tread | 59.1 to 78.7 inches
150 to 199 cm |
Photos
Fiat 55-90
Recommended Implements & Sizing Guide
Engineering recommendations for Fiat 55-90 based on its 55 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Fiat 55-90.
Estimated Continuous Field Runtime: 8.6 hrs
Approximately 8.6 hours of continuous field operation at ~75% rated power on a full tank (24.6 gal / 93.1 L).
Estimated 75% Load Fuel Burn~2.9 gal/hr (10.8 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Fiat 55-90 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Fiat 55-90.
Converted Equivalents:
Horsepower (HP)55 hp
Kilowatts (kW)41 kW
Metric Horsepower (PS / CV)55.8 PS
Direct Competitor Comparison
Compare Fiat 55-90 against same-era industry alternatives in the same horsepower class.
Current Model
Fiat
Fiat 55-90
Engine Power:Diesel (listed): 55 hp / 41.0 kW
★ Baseline Reference
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