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Hart-Parr 28-44 vs Hart-Parr Oil King 23-35

Verdict: Hart-Parr 28-44 vs Hart-Parr Oil King 23-35

The Hart-Parr 28-44 and the Hart-Parr Oil King 23-35 are both tractors — here is how they stack up on the figures that matter. Hart-Parr Oil King 23-35 leads on rated power with 23 hp against 22 hp. Hart-Parr Oil King 23-35 is the lighter machine (5,443 kg vs 5,565 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Hart-Parr 28-44 holds more fuel (128.7 L vs 113.6 L) for longer stints between fills. Hart-Parr 28-44 is the newer design (1930 vs 1916). In short: choose the Hart-Parr Oil King 23-35 for outright pulling power, or the Hart-Parr 28-44 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
Hart-Parr 28-44 Tractor
Hart-Parr
62
Fit score
Best match
Clear
Hart-Parr Oil King 23-35 Tractor
Hart-Parr
62
Fit score
Best match
Clear
Rated power
22 hp
23 hp
Confidence
40%
40%
Guide price
Overview
Manufacturer
Hart-Parr (a part of Oliver)Reference
Hart-ParrReference
Gear 1 used for pull test.Reference
liquid-cooledReference
Engine
Fuel tank
128.7 LReference
113.6 LReference
Drawbar (claimed)
16.4 kWReference
17.2 kWReference
Belt (claimed)
32.8 kWReference
26.1 kWReference
Plows
3-5Reference
Drawbar (tested)
25.5 kWReference
Belt (tested)
36.6 kWReference
Displacement
7.3 LReference
12.9 LReference
Bore/Stroke
121 x 159 mmReference
254 x 254 mmReference
Rated RPM
1125Reference
500Reference
Coolant capacity
39.7 LReference
113.6 LReference
Belt power (max)
36.6 kWReference
Max power
25.5 kWReference
Transmission
Type
gearReference
Gears
3 forward and 1 reverseReference
2 forward and 1 reverseReference
Transmission
gearReference
PTO & Hydraulics
Rear PTO Type
540Reference
Dimensions
Wheelbase
203 cmReference
Weight
5565 to 6415 poundsReference
5443 kgReference
Front tire
29x6Reference
Rear tire
46x12 (steel)Reference
Ag front
29x6 (steel)Reference
Ag rear
46x12 (steel)Reference
Length
319 cmReference
273 cmReference
Height (hood)
151 cmReference
Shipping weight
2524 kgReference
Operating weight
2909 kgReference
Height
317 cmReference
28-44 Serial Numbers
1930
500001Reference
1931
503599Reference
1932
506185Reference
1933
506212Reference
1934
506255Reference
1935
506401Reference
1936
507176Reference
1937
508016Reference
Final
508917Reference
Capacities
Diameter
42 cmReference
Width
165 cmReference
182 cmReference
RPM
596Reference
Speed
792.48 meters/minReference
Test results
Belt fuel use (max)
18.5 l/hourReference
Max pull
2320 kgReference

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.

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