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Caterpillar D4 vs Caterpillar RD4
Verdict: Caterpillar D4 vs Caterpillar RD4
The Caterpillar D4 and the Caterpillar RD4 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 35 hp. Caterpillar D4 is the newer design (1938 vs 1935). 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
Caterpillar
62
Fit score
Best match
Clear
Caterpillar
62
Fit score
Best match
Clear
Rated power
35 hp
35 hp
Confidence
40%
40%
Guide price
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Overview
Manufacturer
CaterpillarReference
CaterpillarReference
Gear 1 used for pull test.Reference
Gear 1 used for pull test.Reference
Drive
crawlerReference
crawlerReference
Steering
manual clutchesReference
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Engine
Fuel tank
75.7 LReference
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Drawbar (tested)
26.1 kWReference
26.1 kWReference
Belt (tested)
29.7 kWReference
29.7 kWReference
Displacement
5.1 LReference
5.1 LReference
Bore/Stroke
108 x 140 mmReference
108 x 140 mmReference
Air cleaner
oil bathReference
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Compression
17.3:1Reference
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Rated RPM
1400Reference
1400Reference
Torque
570.9 NmReference
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Torque RPM
1000Reference
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Oil capacity
18.9 LReference
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Coolant capacity
41.6 LReference
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Belt power (max)
29.7 kWReference
29.7 kWReference
Max power
26.1 kWReference
26.1 kWReference
Transmission
Type
gearReference
gearReference
Gears
5 forward and 1 reverseReference
5 forward and 1 reverseReference
Clutch
dry discReference
dry discReference
Dimensions
Wheelbase
155 cmReference
—
Weight
4649 kgReference
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Length
306 cmReference
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Height (hood)
153 cmReference
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Ground clearance
28 cmReference
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Clearance (drawbar)
36 cmReference
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Gauge
152 cmReference
152 cmReference
D4 Serial Numbers
1936
4G1Reference
4G1Reference
1937
4G3663Reference
4G3663Reference
1938
4G8858Reference
4G8858Reference
1939
7J1Reference
4G9912Reference
1940
7J1758Reference
—
1941
7J4119Reference
—
1942
7J7544Reference
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1943
2T1Reference
—
1944
2T3306Reference
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1945
5T1Reference
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1946
5T3524Reference
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1947
5T6780Reference
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Location:
Serial number plate on the rear of the tractor, upper-left of the transmission case.Reference
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Links
Caterpillar D4 Tracks
Width
198 cmReference
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Test results
Belt fuel use (max)
11.0 l/hourReference
11.0 l/hourReference
Max pull
3561 kgReference
3561 kgReference
RD4 Serial Numbers
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.