Compare/Fiat 45-66S vs Fiat 55-76

Fiat 45-66S vs Fiat 55-76

Verdict: Fiat 45-66S vs Fiat 55-76

The Fiat 45-66S and the Fiat 55-76 are both tractors — here is how they stack up on the figures that matter. Fiat 55-76 leads on rated power with 45 hp against 44 hp. Fiat 55-76 is the lighter machine (3,792 kg vs 4,685 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Fiat 45-66S is the newer design (1992 vs 1990). In short: choose the Fiat 55-76 for outright pulling power, or the Fiat 45-66S if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Fiat

Fit score

Best match

Clear

Fiat

Fit score

Best match

Clear

Rated power

44 hp

45 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

FiatReference

liquid-cooledReference

Optional creeper range for the standard 12-speed transmission.Reference

Final drives

—

planetaryReference

Differential lock

—

mechanical rearReference

Engine

33.1 kWReference

40.4 kWReference

Displacement

2.7 LReference

Bore/Stroke

100 x 115 mmReference

Power

33.1 kWReference

40.4 kWReference

Rated RPM

2500Reference

Starter

electricReference

Starter volts

12Reference

Air cleaner

—

dryReference

Compression

—

17:1Reference

Firing order

—

1-2-3Reference

Intake valve clearance

—

0.254 mmReference

Exhaust valve clearance

—

0.356 mmReference

Transmission

Type

creeperReference

Gears

20 forward and 8 reverseReference

Clutch

—

254mm dry discReference

PTO & Hydraulics

Rear lift

2125 kgReference

—

Rear PTO Type

540/1000Reference

540/1000 (1.375)Reference

PTO (claimed)

—

33.6 kWReference

Pressure

—

186.0 barReference

Pump flow

—

32.9 lpmReference

Rear Type

—

IReference

Control

—

position and lower-link draft controlReference

Rear PTO

—

independentReference

Engine RPM

—

1000@2380Reference

Dimensions

2WD Wheelbase

199 cmReference

188 cmReference

4WD Wheelbase

190 cmReference

188 cmReference

Weight

4685 to 5236 poundsReference

3792 to 3990 poundsReference

Front tire

5.50-16Reference

5.00-15Reference

2WD Rear tire

12.4/11-28Reference

—

2WD Standard tires (ag)

Front: 5.50-16. Rear: 12.4/11-28Reference

—

4WD Standard tires (ag)

Front: 7.50-20. Rear: 12.4/11-28Reference

Front: 6.00-16. Rear: 11.2/10-28Reference

2WD Length

297 cmReference

288 cmReference

4WD Length

296 cmReference

279 cmReference

2WD Weight

2125 kgReference

—

4WD Weight

2375 kgReference

—

2WD Ground clearance

44 cmReference

32 cmReference

4WD Ground clearance

33 cmReference

22 cmReference

2WD Front tread

130 to 180 cmReference

—

4WD Front tread

138 to 181 cmReference

—

Rear tread

120 to 180 cmReference

—

Steering wheel

145 cmReference

—

2WD V Rear tire

—

9.5-28Reference

2WD V Standard tires (ag)

—

Front: 5.00-15. Rear: 9.5-28Reference

2WD O Standard tires (ag)

—

Front: 5.00-15. Rear: 11.2-24Reference

2WD V Front tread

—

98/104 cmReference

2WD O Front tread

—

98/108 cmReference

2WD V Rear tread

—

74/85/102/113/114/125 cmReference

2WD O Rear tread

—

87/88/98/99/107/119 cmReference

2WD

—

1720 kgReference

4WD

—

1809 kgReference

2WD Ballasted

—

1880 kgReference

4WD Ballasted

—

1969 kgReference

2WD Steering wheel

—

135 cmReference

4WD Steering wheel

—

131 cmReference

Electrical

Ground

negativeReference

Battery volts

12Reference

Charging system

—

alternatorReference

Watts (rated)

—

400Reference

Battery AH

—

100Reference

Fiat 45-66S Height

Hood

127 cmReference

—

Cab

224 cmReference

—

55-76 Serial Numbers

Location:

—

Serial number plate below the steering column.Reference

Fiat 55-76 Height

2WD Hood

—

116 cmReference

4WD Hood

—

120 cmReference

2WD ROPS

—

237 cmReference

4WD ROPS

—

240 cmReference

Speeds

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.