Zetor 12011/12045
Built: 1974–1984 · Series: CRYSTAL (UR 2)
More machines from model year 1974
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Zetor Crystal (UR II) – large tractors of types 8011/8045, 10011/10045, 12011/12045 and 16045 from Brno in the 1980s, four- to six-cylinder diesels from 59 to 110 kW
The Crystal series forms Zetor's in-house UR II generation, replacing the first Zetor generation, UR I, from the 1970s onward. The tractors were built in Czechoslovak Brno, where Zetor has been based since its founding in 1946. Type numbers such as 8011, 10011, 12011 and 16045 reflect the power class in horsepower in their first two digits, while pairings such as 8011/8045 or 10011/10045 denote different execution variants of the same base type within the Crystal range.
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The register lists four versions here with 58.8 to 110.3 kW from four- to six-cylinder diesel engines with 4,561 to 6,842 cm³ displacement. Rated speed is 2,200 rpm, unladen weight ranges from 3,793 to 4,990 kg with lengths from 4,140 to 4,533 mm, widths from 1,950 to 2,224 mm and heights from 2,445 to 2,506 mm; torque lies between 310 and 492 Nm.
As large tractors from Czechoslovak production, the Crystal models were exported in large numbers to the Eastern Bloc countries and beyond, where alongside Soviet brands such as Belarus they ranked among the most widespread workhorses of socialist agriculture.
When buying used, check the condition of the clutch and gearbox, tightness of the hydraulic pump and steering hydraulics, corrosion on the wings, cab floor and radiator grille, and parts availability, which for this widely used series is well secured through Zetor's distribution and a dense network of eastern European specialist dealers.
Sources: SpecCodex register, model data: Zetor CRYSTAL (UR 2), Zetor (manufacturer)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 115 hp (84.6 kW)correct |
| Rated speed | 2,200 rpmcorrect |
| Torque | 374 Nmcorrect |
| Speed at max. torque | 1,496 rpmcorrect |
| Cylinders | 6correct |
| Displacement | 6,842 cm³correct |
| Bore | 110 mmcorrect |
| Stroke | 110 mmcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 4,470 mmcorrect |
|---|---|
| Width | 2,224 mmcorrect |
| Height | 2,506 mmcorrect |
| Wheelbase | 2,695 mmcorrect |
| Ground clearance | 375 mmcorrect |
| Unladen weight | 4,165 kgcorrect |
Drivetrain and chassis
| Drive | rear- or four-wheel drivecorrect |
|---|---|
| Gearbox | 16 V/8 Rcorrect |
| Forward gears | 16correct |
| Reverse gears | 8correct |
| Front tyres | 7.50-20 ASF (A: 14.9-24 AS)correct |
| Rear tyres | 18.4-34 AScorrect |
| Top speed | 30 km/hcorrect |
Working data
| Fuel tank capacity | 130 lcorrect |
|---|
Origin and approval
| Construction | semi-frame constructioncorrect |
|---|---|
| Units built | 5.736 beidecorrect |
Other data
| Linkage category | Cat IIcorrect |
|---|---|
| PTO speed | 540/1000 rpmcorrect |
Where this model stands
Power-to-weight ratio: 20.3 kW/t (85 kW / 4.2 t)
Power class: Large (100–180 hp)
Stronger than 72% 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 Zetor 12011/12045 have?
The Zetor 12011/12045 delivers 115 hp.
How much does the Zetor 12011/12045 weigh?
The unladen weight is 4,165 kg.
What engine does the Zetor 12011/12045 have?
6 cylinders, 6,842 cm³ displacement, Diesel.
How fast does the Zetor 12011/12045 go?
Top speed is 30 km/h.
What are the dimensions of the Zetor 12011/12045?
4,470 mm × 2,224 mm × 2,506 mm.
When was the Zetor 12011/12045 built?
Production years: 1974–1984.
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 30 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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Other models in this series
Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data
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Turn the model, look inside and click an assembly — each one is explained.
