Embed

Paste on your site — shows live UK/US specs and links back here. Free to use.

<iframe src="https://farmfleetspecs.com/embed/mccormick-deering-os-4" width="100%" height="430" loading="lazy" style="border:1px solid #e6e8e4;border-radius:14px;max-width:560px" title="McCormick-Deering OS-4 specs — FarmFleetSpecs"></iframe>

Tractor · 1944Unverified

McCormick-Deering OS-4

Name: McCormick-Deering OS-4
Brand: McCormick-Deering

McCormick-Deering OS-4 · 25 hp. Reference specifications; pending source verification.

The McCormick-Deering OS-4 is a 25 hp tractor, situated at the lighter end of its class. It was manufactured from 1944 to 1953 and features a 4-cylinder petrol liquid-cooled engine, paired with a 5-speed gearbox and two-wheel drive. The tractor has an operating weight of 1868 kg and is suitable for operations covering up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

25 hp

Weight

1868 kg

Catalogue coverage

Variants represented

Richest spec table

49 rows

Recorded power

25 hp

Recorded weight

1868 kg

Transmissions

5-speed gear

Production years

1944-1953

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerMcCormick-DeeringReference

Built in Rock Island, Illinois, USAReference

Two-wheel driveReference

Manual steeringReference

Open operator station.Reference

Variants

W-4standardReference

O-4orchardReference

OS-4orchard, without full sheet metalReference

Engine

International Harvester 2.5L 4-cyl gasolineReference

Fuel tank66.2 LReference

Aux. fuel2.8 LReference

Drawbar (claimed)18.6 kWReference

Belt (claimed)20.5 kWReference

International HarvesterReference

gasolineReference

4-cylinderReference

liquid-cooledReference

Displacement2.5 LReference

Bore/Stroke86 x 113 mmReference

Air cleaneroil bathReference

Compression5.9:1 (high-compression gasoline)Reference

Compression4.75:1 (gasoline-distillate)Reference

Compression4.5:1 (kerosene)Reference

Rated RPM1650Reference

Firing order1-3-4-2Reference

Oil capacity5.7 LReference

Coolant capacity16.1 LReference

Transmission

5-speed gearReference

TypegearReference

Gears5 forward and 1 reverseReference

Oil capacity22.7 LReference

PTO & Hydraulics

Rear PTO Type540Reference

Dimensions

Wheelbase169 cmReference

Weight1868 kgReference

Front tire5.50-16Reference

Rear tire12-26Reference

Ag front5.50-16Reference

Ag rear12-26Reference

Length307 cmReference

Width140 cmReference

Height145 cmReference

Shipping weight1868 kgReference

Clearance (front axle)38 cmReference

Front tread116 cmReference

Rear tread106 cmReference

Capacities

Diameter24 cmReference

Width19 cmReference

RPM1019Reference

Speed792.78 meters/minReference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

Partner tool · Free

Working out if you can afford this tractor?

YourIncomeCalculator.com — free, HMRC-aligned take-home pay, self-employment & VAT calculators. No sign-up.

Calculate your take-home pay

Recommended kit

Handy kit for owners

Popular tractor and farm accessories owners pick up for machines like this.

Disclosure: some links on this page are affiliate links. If you buy through them we may earn a small commission — at no extra cost to you. Learn more.