Compare/McCormick-Deering OS-4 vs McCormick-Deering W-40

McCormick-Deering OS-4 vs McCormick-Deering W-40

Verdict: McCormick-Deering OS-4 vs McCormick-Deering W-40

The McCormick-Deering OS-4 and the McCormick-Deering W-40 are both tractors — here is how they stack up on the figures that matter. McCormick-Deering W-40 leads on rated power with 28 hp against 25 hp. McCormick-Deering OS-4 is the lighter machine (1,868 kg vs 2,766 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. McCormick-Deering W-40 holds more fuel (117.3 L vs 66.2 L) for longer stints between fills. McCormick-Deering OS-4 is the newer design (1944 vs 1935). In short: choose the McCormick-Deering W-40 for outright pulling power, or the McCormick-Deering OS-4 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

McCormick-Deering

Fit score

Best match

Clear

McCormick-Deering

Fit score

Best match

Clear

Rated power

25 hp

28 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

McCormick-DeeringReference

McCormick-Deering (a part of International Harvester)Reference

liquid-cooledReference

High-speed fourth gear was only for tractors with rubber tires.Reference

Final drives

—

bull gearReference

Variants

W-4

standardReference

—

O-4

orchardReference

—

OS-4

orchard, without full sheet metalReference

—

WA-40

—

279ci gasolineReference

W-40

—

298ci gasolineReference

WK-40

—

298ci keroseneReference

WD-40

—

dieselReference

Engine

Fuel tank

66.2 LReference

117.3 LReference

Aux. fuel

2.8 LReference

4.7 LReference

Drawbar (claimed)

18.6 kWReference

20.9 kWReference

Belt (claimed)

20.5 kWReference

33.6 kWReference

Displacement

2.5 LReference

4.0 LReference

Bore/Stroke

86 x 113 mmReference

86 x 114 mmReference

Air cleaner

oil bathReference

Compression

4.5:1 (kerosene)Reference

—

Rated RPM

1650Reference

1750Reference

Firing order

1-3-4-2Reference

—

Oil capacity

22.7 LReference

8.5 LReference

Coolant capacity

16.1 LReference

45.4 LReference

Drawbar (tested)

—

26.3 kWReference

Belt (tested)

—

37.1 kWReference

Belt power (max)

—

37.1 kWReference

Max power

—

26.3 kWReference

Transmission

Type

gearReference

unsynchronized gearReference

Gears

5 forward and 1 reverseReference

4 forward and 1 reverseReference

Clutch

—

dry discReference

PTO & Hydraulics

Rear PTO Type

540Reference

553Reference

Dimensions

Wheelbase

169 cmReference

215 cmReference

Weight

1868 kgReference

2766 kgReference

Front tire

5.50-16Reference

34x6Reference

Rear tire

12-26Reference

50x12Reference

Ag front

5.50-16Reference

34x6 (steel)Reference

Ag rear

12-26Reference

50x12 (steel)Reference

Length

307 cmReference

359 cmReference

Height

145 cmReference

—

Shipping weight

1868 kgReference

—

Clearance (front axle)

38 cmReference

—

Front tread

116 cmReference

132 cmReference

Rear tread

106 cmReference

134 cmReference

Height (exhaust)

—

185 cmReference

Capacities

Diameter

24 cmReference

39 cmReference

Width

140 cmReference

167 cmReference

RPM

1019Reference

645Reference

Speed

792.78 meters/minReference

806.81 meters/minReference

W-40 Serial Numbers

1935

—

501Reference

1936

—

1441Reference

1937

—

5120Reference

1938

—

7665Reference

1939

—

9756Reference

1940

—

10323Reference

Test results

Belt fuel use (max)

—

21.2 l/hourReference

Max pull

—

2259 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.