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Shibaura SD3903 vs Shibaura SD4000
Verdict: Shibaura SD3903 vs Shibaura SD4000
The Shibaura SD3903 and the Shibaura SD4000 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 39 hp. Shibaura SD4000 is the lighter machine (1,531 kg vs 1,652 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Shibaura SD3903 is the newer design (1980 vs 1977). 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
Shibaura
62
Fit score
Best match
Clear
Shibaura
62
Fit score
Best match
Clear
Rated power
39 hp
39 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
ShibauraReference
ShibauraReference
liquid-cooled inlineReference
With 12.4/11-28 rear tires. Creeper speeds are 13% of standard speeds.Reference
Differential lock
—
mechanical rearReference
Engine
Engine
29.1 kWReference
29.0 kWReference
Displacement
1.5 LReference
2.1 LReference
Power
29.1 kWReference
29.0 kWReference
Rated RPM
2750Reference
2500Reference
Starter
electricReference
—
Starter volts
12Reference
12Reference
Bore/Stroke
—
85 x 94 mmReference
Compression
—
22:1Reference
Transmission
Type
creeperReference
gearReference
Gears
24 forward and 8 reverseReference
24 forward and 8 reverseReference
Clutch
—
dry discReference
Oil capacity
—
35.0 LReference
PTO & Hydraulics
Rear Type
IReference
IReference
Rear PTO Type
540 (1.375)Reference
540 (1.375)Reference
Control
—
position and draft controlReference
Rear lift (at ends)
—
1969 kgReference
Rear PTO
—
transmissionReference
Engine RPM
—
1320@2500Reference
Dimensions
Weight
1652 kgReference
1531 kgReference
Front tire
6.00-16Reference
6.00-16Reference
Rear tire
12.4/11-28Reference
12.4/11-28Reference
Standard tires (ag)
Front: 6.00-16. Rear: 12.4/11-28Reference
—
Length
335 cmReference
337 cmReference
Width
152 cmReference
151 cmReference
Height
193 cmReference
193 cmReference
Wheelbase
—
181 cmReference
Ag front
—
6.00-16Reference
Ag rear
—
12.4/11-28Reference
Ground clearance
—
39 cmReference
Front tread
—
121 to 149 cmReference
Rear tread
—
119 to 150 cmReference
Variants
SD4000AD
—
2WD 24-speedReference
SD4000AD-0
—
4WD 24-speedReference
SD4000A
—
2WD 12-speedReference
SD4000A-0
—
4WD 12-speedReference
Electrical
Ground
—
negativeReference
Charging system
—
alternatorReference
Charging amps
—
20Reference
Battery volts
—
12Reference
Battery AH
—
100Reference
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.