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International Harvester 523

Built: 6/1965–3/1972 · Series: Common Market

More machines from model year 1965

With the 523, International Harvester offers a model from the Common Market series. Production: 6/1965–3/1972. The engine delivers 48 hp (35.1 kW), has 3 cylinders, with a displacement of 2,934 cm³. Rated speed is 2,100 rpm. The machine is 3,035 mm long, 1,815 mm wide and 1,520 mm high. The unladen weight is 2,440 kg. The wheelbase measures 2,000 mm. Ground clearance is 380 mm. Top speed is 20 km/h. The engine is water-cooled. Tyres: front 7.50-16 (A: 9-24), rear 11-32 (A: 14-30). The fuel is diesel. Construction: frameless unit construction. Around 17.571 units were built. The Common Market series covers 3 models. Rated output within it ranges from 40 to 48 hp; the 523 sits at the top of that range with 48 hp. Its immediate neighbours are the V 453/E 453 below it with 45 hp. Unladen weight within it ranges from 1,720 to 2,440 kg; here the 523 sits at the top of that range with 2,440 kg. 391 International Harvester models across 45 series are on record.

International Harvester Common Market – three-cylinder diesels for the European market, types 423 to V 453/E 453, 2,536 to 2,934 cc, 29 to 35 kW

This International Harvester range gathers tractors the maker designed specifically for the European market of the European Economic Community, listed in the register under the name Common Market. International Harvester ran its own plant in Neuss on the Rhine for European sales, where types such as the 423, 523 and V 453/E 453 listed here were built for the continental market. The V variant of the 453, with a markedly narrower track, complemented the standard E 453 type with a version for narrow row crops.

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The register lists 3 versions here with 29.3 to 35.1 kW from three-cylinder diesel engines of 2,536 to 2,934 cc at 1,900 to 2,200 rpm, kerb weights of 1,720 to 2,440 kg, lengths of 2,895 to 3,090 mm, widths of 997 to 1,815 mm and heights of 1,441 to 1,925 mm.

With their three-cylinder class, the Common Market models covered the mid power segment and competed in Europe with Fiat, Deutz and Ford, while the narrow V version served a niche of special-crop holdings in viticulture and fruit growing.

When buying a used Common Market model, the key points are the condition of the engine and injection pump, wear on clutch and gearbox, and corrosion on mudguards and chassis; since International Harvester folded its tractor division into Case IH in 1985, spare parts today are mainly available through dealers specialising in vintage machinery.

Sources: SpecCodex register, model data: International Harvester Common Market

Technical data

Engine

Fuel	dieselcorrect
Power	48 hp (35.1 kW)correct
Rated speed	2,100 rpmcorrect
Cylinders	3correct
Displacement	2,934 cm³correct
Cooling	water-cooledcorrect

Dimensions and weights

Length	3,035 mmcorrect
Width	1,815 mmcorrect
Height	1,520 mmcorrect
Wheelbase	2,000 mmcorrect
Ground clearance	380 mmcorrect
Unladen weight	2,440 kgcorrect

Drivetrain and chassis

Drive	rear- or four-wheel drivecorrect
Gearbox	8/4- oder 12/4-Getriebecorrect
Front tyres	7.50-16 (A: 9-24)correct
Rear tyres	11-32 (A: 14-30)correct
Top speed	20 km/hcorrect

Origin and approval

Construction	frameless unit constructioncorrect
Units built	17,571correct

Where this model stands

Power-to-weight ratio: 14.4 kW/t (35 kW / 2.4 t)

Power class: Universal (40–100 hp)

Stronger than 32% of the tractors in the register — out of 15,663 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the International Harvester 523 have?

The International Harvester 523 delivers 48 hp.

How much does the International Harvester 523 weigh?

The unladen weight is 2,440 kg.

What engine does the International Harvester 523 have?

3 cylinders, 2,934 cm³ displacement, Diesel.

How fast does the International Harvester 523 go?

Top speed is 20 km/h.

What are the dimensions of the International Harvester 523?

3,035 mm × 1,815 mm × 1,520 mm.

When was the International Harvester 523 built?

Production years: 6/1965–3/1972.

What to check before buying

Check the hour meter against the service records — a replaced instrument is the most common gap.
Compare the data plate and chassis number with the papers.
Check the weights in the papers against the figures here — attachments change them.
Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
Shift the gearbox cold and warm — jumps only show up at temperature.
Load the hydraulics and watch for sag.
Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 20 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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