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Fiat 431R vs Fiat 451C
Verdict: Fiat 431R vs Fiat 451C
The Fiat 431R and the Fiat 451C are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 40 hp. Fiat 431R is the lighter machine (1,519 kg vs 2,510 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Fiat 431R is the newer design (1964 vs 1958). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
Fiat
62
Fit score
Best match
Clear
Fiat
62
Fit score
Best match
Clear
Rated power
40 hp
40 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
FiatReference
FiatReference
liquid-cooledReference
liquid-cooledReference
Drive
—
crawlerReference
Variants
411R
utilityReference
utilityReference
411RB
gasoline engineReference
gasoline engineReference
411T
tricycleReference
tricycleReference
411C
crawlerReference
crawlerReference
421R
orchardReference
orchardReference
431R
vineyardReference
vineyardReference
441R
four-wheel driveReference
four-wheel driveReference
451C
mountain crawlerReference
mountain crawlerReference
481R
high-cropReference
high-cropReference
Engine
Engine
29.8 kWReference
29.8 kWReference
Displacement
2.3 LReference
2.3 LReference
Bore/Stroke
85 x 100 mmReference
85 x 100 mmReference
Power
29.8 kWReference
29.8 kWReference
Compression
21.5:1Reference
21.5:1Reference
Rated RPM
2300Reference
2300Reference
Firing order
1-3-4-2Reference
1-3-4-2Reference
Starter volts
24Reference
24Reference
Starter
—
electricReference
Transmission
Type
gearReference
gearReference
Gears
6 forward and 2 reverseReference
6 forward and 2 reverseReference
PTO & Hydraulics
Rear PTO Type
540Reference
540 (1.375)Reference
Engine RPM
—
540@2160Reference
Dimensions
Weight
1519 kgReference
2510 kgReference
Front tire
5.00-15Reference
—
Rear tire
10-28Reference
—
Ag front
5.00-15Reference
—
Ag rear
10-28Reference
—
Length
288 cmReference
252 cmReference
Width
109 cmReference
164 cmReference
Height
129 cmReference
159 cmReference
Wheelbase
—
132 cmReference
Height (hood)
—
130 cmReference
Ground clearance
—
26 cmReference
Gauge
—
130 cmReference
Electrical
Ground
negativeReference
negativeReference
Batteries
2Reference
2Reference
Battery volts
12Reference
12Reference
Fiat 451C Tracks
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.