Compare/McCormick-Deering O-4 vs McCormick-Deering OS-4

McCormick-Deering O-4 vs McCormick-Deering OS-4

Verdict: McCormick-Deering O-4 vs McCormick-Deering OS-4

The McCormick-Deering O-4 and the McCormick-Deering OS-4 are both tractors — here is how they stack up on the figures that matter. McCormick-Deering OS-4 leads on rated power with 25 hp against 24 hp. McCormick-Deering OS-4 is the lighter machine (1,868 kg vs 1,959 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. McCormick-Deering OS-4 is the newer design (1944 vs 1940). In short: choose the McCormick-Deering OS-4 for outright pulling power, or the McCormick-Deering O-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

24 hp

25 hp

Confidence

40%

Guide price

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Overview

Manufacturer

McCormick-DeeringReference

liquid-cooledReference

Total built

2,721Reference

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Variants

W-4

standardReference

O-4

orchardReference

OS-4

orchard, without full sheet metalReference

Engine

Fuel tank

66.2 LReference

Aux. fuel

2.8 LReference

Belt (claimed)

20.5 kWReference

Displacement

2.5 LReference

Bore/Stroke

86 x 113 mmReference

Compression

4.5:1 (kerosene)Reference

Rated RPM

1650Reference

Firing order

1-3-4-2Reference

Oil capacity

5.7 LReference

22.7 LReference

Drawbar (claimed)

—

18.6 kWReference

Air cleaner

—

oil bathReference

Coolant capacity

—

16.1 LReference

Transmission

Type

gearReference

Gears

5 forward and 1 reverseReference

PTO & Hydraulics

Rear PTO Type

540Reference

Dimensions

Wheelbase

169 cmReference

Weight

1959 kgReference

1868 kgReference

Front tire

5.50-16Reference

Rear tire

12-26Reference

Ag front

5.50-16Reference

Ag rear

12-26Reference

Length

307 cmReference

Height

153 cmReference

145 cmReference

Shipping weight

1959 kgReference

1868 kgReference

Clearance (front axle)

—

38 cmReference

Front tread

—

116 cmReference

Rear tread

—

106 cmReference

O-4 Serial Numbers

1940

OBH501Reference

—

1941

OBH943Reference

—

1942

OBH4056Reference

—

1943

OBH5693Reference

—

1944

OBH7593Reference

—

1945

OBH11171Reference

—

1946

OBH13934Reference

—

1947

OBH16022Reference

—

1948

OBH18880Reference

—

1949

OBH21912Reference

—

1950

OBH24470Reference

—

1951

OBH28167Reference

—

1952

OBH31214Reference

—

1953

OBH33067Reference

—

Location:

Left side of tractor, on clutch housing.Reference

—

Capacities

Diameter

24 cmReference

Width

153 cmReference

140 cmReference

RPM

1019Reference

Speed

792.78 meters/minReference

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.