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Shibaura SD3903 vs Shibaura ST445
Verdict: Shibaura SD3903 vs Shibaura ST445
The Shibaura SD3903 and the Shibaura ST445 are both tractors — here is how they stack up on the figures that matter. Shibaura SD3903 leads on rated power with 39 hp against 38 hp. Shibaura ST445 is the lighter machine (1,510 kg vs 1,652 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. In short: choose the Shibaura SD3903 for outright pulling power, or the Shibaura ST445 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.
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Fit & specs
Shibaura
62
Fit score
Best match
Clear
Shibaura
62
Fit score
Best match
Clear
Rated power
39 hp
38 hp
Confidence
40%
40%
Guide price
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Overview
Manufacturer
ShibauraReference
ShibauraReference
liquid-cooled inlineReference
4-cylinderReference
Engine
Engine
29.1 kWReference
33.6 kWReference
Displacement
1.5 LReference
2.2 LReference
Power
29.1 kWReference
33.6 kWReference
Rated RPM
2750Reference
2600Reference
Starter
electricReference
—
Starter volts
12Reference
12Reference
Fuel tank
—
39.0 LReference
Transmission
Type
creeperReference
—
Gears
24 forward and 8 reverseReference
12 forward and reverseReference
Transmission
—
synchromeshReference
PTO & Hydraulics
Rear Type
IReference
IReference
Rear PTO Type
540 (1.375)Reference
540, 791Reference
PTO (claimed)
—
28.3 kWReference
Valves
—
1Reference
Pump flow
—
37.1 lpmReference
Rear lift
—
1485 kgReference
Rear PTO
—
independentReference
Dimensions
Weight
1652 kgReference
1510 kgReference
Front tire
6.00-16Reference
8-16Reference
Rear tire
12.4/11-28Reference
14.9-24Reference
Standard tires (ag)
Front: 6.00-16. Rear: 12.4/11-28Reference
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Length
335 cmReference
321 cmReference
Width
152 cmReference
161 cmReference
Height
193 cmReference
246 cmReference
Wheelbase
—
176 cmReference
Ag front
—
8-16Reference
Ag rear
—
14.9-24Reference
Lawn/turf front
—
27x8.5-15Reference
Lawn/turf rear
—
18.4-16.1Reference
Ground clearance
—
33 cmReference
Electrical
Charging amps
—
40Reference
Battery volts
—
12Reference
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.