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

McCormick-Deering OS-4 vs McCormick-Deering WD-40

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

The McCormick-Deering OS-4 and the McCormick-Deering WD-40 are both tractors — here is how they stack up on the figures that matter. McCormick-Deering WD-40 leads on rated power with 28 hp against 25 hp. McCormick-Deering OS-4 is the lighter machine (1,868 kg vs 3,424 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. McCormick-Deering WD-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 WD-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

Gear 1 used for pull test.Reference

Final drives

—

spur gearReference

Variants

W-4

standardReference

—

O-4

orchardReference

—

OS-4

orchard, without full sheet metalReference

—

WA-40

—

gasolineReference

WK-40

—

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

32.8 kWReference

Displacement

2.5 LReference

7.6 LReference

Bore/Stroke

86 x 113 mmReference

121 x 165 mmReference

Air cleaner

oil bathReference

Compression

4.5:1 (kerosene)Reference

17:1Reference

Rated RPM

1650Reference

1100Reference

Firing order

1-3-4-2Reference

—

Oil capacity

22.7 LReference

—

Coolant capacity

16.1 LReference

53.0 LReference

Plows

—

4 (14-inch)Reference

Drawbar (tested)

—

27.7 kWReference

Belt (tested)

—

36.4 kWReference

Starter type

—

hand-cranked gasoline-ignitionReference

Belt power (max)

—

36.4 kWReference

Max power

—

27.7 kWReference

Transmission

Type

gearReference

Gears

5 forward and 1 reverseReference

3 forward and 1 reverseReference

Clutch

—

dry discReference

PTO & Hydraulics

Rear PTO Type

540Reference

—

Dimensions

Wheelbase

169 cmReference

—

Weight

1868 kgReference

3424 kgReference

Front tire

5.50-16Reference

34x6Reference

Rear tire

12-26Reference

50x12Reference

Ag front

5.50-16Reference

34x6 steelReference

Ag rear

12-26Reference

50x12 steelReference

Length

307 cmReference

359 cmReference

Height

145 cmReference

170 cmReference

Shipping weight

1868 kgReference

—

Clearance (front axle)

38 cmReference

—

Front tread

116 cmReference

—

Rear tread

106 cmReference

—

Capacities

Diameter

24 cmReference

42 cmReference

Width

140 cmReference

166 cmReference

RPM

1019Reference

588Reference

Speed

792.78 meters/minReference

786.38 meters/minReference

Test results

Belt fuel use (max)

—

12.9 l/hourReference

Max pull

—

2165 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.