Compare/Allis Chalmers 5045 vs Allis Chalmers K-O

Allis Chalmers 5045 vs Allis Chalmers K-O

Verdict: Allis Chalmers 5045 vs Allis Chalmers K-O

The Allis Chalmers 5045 and the Allis Chalmers K-O are both tractors — here is how they stack up on the figures that matter. Allis Chalmers K-O leads on rated power with 50 hp against 44 hp. Allis Chalmers 5045 is the lighter machine (1,746 kg vs 5,216 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 5045 is the newer design (1981 vs 1934). In short: choose the Allis Chalmers K-O for outright pulling power, or the Allis Chalmers 5045 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

44 hp

50 hp

Confidence

40%

Guide price

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Overview

Distributor

Allis ChalmersReference

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Manufacturer

FiatReference

Allis ChalmersReference

Four gears, plus reverse, in two ranges. Top two gears (3/4 and 7/8) are synchronized.Reference

The three-speed transmission was used on early models, built during 1934.Reference

Original price

$12,558Reference

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Drive

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crawlerReference

Engine

Displacement

2.6 LReference

9.2 LReference

Starter volts

12Reference

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Coolant capacity

13.5 LReference

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Drawbar (tested)

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37.6 kWReference

Belt (tested)

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44.0 kWReference

Bore/Stroke

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133 x 165 mmReference

Fuel system

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mechanical injectionReference

Air cleaner

—

oil bathReference

Compression

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6.5:1Reference

Rated RPM

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1050Reference

Belt power (max)

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44.0 kWReference

Max power

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37.6 kWReference

Transmission

Type

partially synchronizedReference

gearReference

Gears

8 forward and 2 reverseReference

4 forward and 1 reverseReference

Clutch

mechanical dry discReference

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PTO & Hydraulics

PTO (claimed)

32.8 kWReference

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Hydraulic system

23.6 LReference

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Capacity

23.6 LReference

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Valves

14Reference

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Pump flow

3.8 lpmReference

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Rear Type

II/IReference

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Control

position control and top-link draft sensingReference

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Rear lift

0 kgReference

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Rear PTO

independentReference

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Rear PTO Type

540Reference

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Dimensions

Wheelbase

191 cmReference

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Weight

1746 kgReference

5216 kgReference

Front tire

6.00-16Reference

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Rear tire

13.6-28Reference

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Ag front

6.00-16Reference

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Ag rear

13.6-28Reference

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Length

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303 cmReference

KO Width

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167 cmReference

Height (hood)

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162 cmReference

KO Gauge

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121 cmReference

WKO Gauge

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160 cmReference

5045 Serial Numbers

1981

988501Reference

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Location:

Serial number plate below the steering wheel.Reference

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Electrical

Ground

negativeReference

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Charging system

alternatorReference

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Battery volts

12Reference

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Variants

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gasolineReference

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wide gasReference

K-O

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dieselReference

WK-O

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wide dieselReference

Allis Chalmers K-O Tracks

Width

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38 cmReference

Test results

Belt fuel use (max)

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17.4 l/hourReference

Max pull

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5300 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.