Steiger Turbo Tiger II ST-320
Built: 1974–1975 · Series: Serie-II
More machines from model year 1974
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Turbo Tiger II ST-320 (Serie-II series) by Steiger: eight-cylinder Cummins diesel engine rated at 239 kW (320 hp), built in 1974 and 1975.
Steiger was one of the American pioneers of the articulated four-wheel-drive tractor with four equally sized wheels, a concept that emerged from the 1960s onward in farming across the American Midwest and the Canadian prairies. Production was based in North Dakota, and the Serie-II generation was among the first to establish this layout in the market.
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The Turbo Tiger II ST-320 is powered by an eight-cylinder Cummins diesel engine of 14,800 cm³ displacement, delivering 239 kW (320 hp) at 2,300 rpm. At an unladen weight of 12,500 kg, the tractor ranked among the heaviest and most powerful field tractors of the 1970s, far beyond the single-axle standard tractors common at the time. That works out to roughly 52 kg of weight per kW, a figure typical of articulated four-wheel-drive tractors of that era.
Drive to four equally sized wheels and an articulation joint in the frame, instead of a conventional steered front axle, defined this vehicle class. It delivered high drawbar force at high pulling power, needed for towing wide cultivators and seeding equipment across large fields.
On a used eight-cylinder machine of this generation, it is worth checking the turbocharger and intake ducting, looking for leaks at the articulation joint and its bearings, and inspecting the four-wheel-drive gearboxes, since decades of field work leave their marks exactly on these components.
Sources: SpecCodex-Register: Kennwerte des Modells Turbo Tiger II ST-320
Technical data
Engine
| Engine make | Cumminscorrect |
|---|---|
| Engine model | 320correct |
| Fuel | dieselcorrect |
| Power | 320 hp (239 kW)correct |
| Rated speed | 2,300 rpmcorrect |
| Cylinders | 8correct |
| Displacement | 14,800 cm³correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Unladen weight | 12,500 kgcorrect |
|---|
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 10v + 2rcorrect |
| Front tyres | 23.1 - 34correct |
| Rear tyres | 23.1 - 34correct |
Origin and approval
| Plant | Fargo, North Dakota, USAcorrect |
|---|---|
| Construction | articulated framecorrect |
Where this model stands
Power-to-weight ratio: 19.1 kW/t (239 kW / 12.5 t)
Power class: Heavy (> 180 hp)
Stronger than 97% 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 Steiger Turbo Tiger II ST-320 have?
The Steiger Turbo Tiger II ST-320 delivers 320 hp.
How much does the Steiger Turbo Tiger II ST-320 weigh?
The unladen weight is 12,500 kg.
What engine does the Steiger Turbo Tiger II ST-320 have?
8 cylinders, 14,800 cm³ displacement, Diesel.
When was the Steiger Turbo Tiger II ST-320 built?
Production years: 1974–1975.
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 19 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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Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data
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