Deutz-Fahr DX 90
Built: 1978–1982 · Series: DX
More machines from model year 1978
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Deutz-Fahr DX – Core Tractor Series From 1978 to the 1980s: three- to six-cylinder diesels with 33.7 to 162 kW (46 to 220 hp), 2,826 to 9,572 cm³ displacement, air-cooled
The DX series formed the core of the Deutz-Fahr range from 1978 into the 1980s and covered a wide power spectrum. According to the register, output ranges from 33.7 to 162 kW, with models rated in horsepower spanning 46 to 220 hp, using three- to six-cylinder engines with displacement from 2,826 to 9,572 cm³.
Read on 3 more paragraphs
Recorded operating weight runs from 1,570 to 9,250 kg, wheelbase from 1,790 to 3,012 mm, and top speed of the listed models spans 22 to 30 km/h. Large models such as the DX 250 marked the top of the Deutz-Fahr range at the time.
The DX series was later succeeded in the top-tier segment by the AgroStar and Agrotron series, while smaller DX models ran alongside the DX 3 series. For a used DX tractor, the exact power class matters most, as engine and chassis differ considerably within the series.
Across such a power span, mounting technology also changed within the DX range: smaller models used a category I or II three-point hitch, while the most powerful versions above 110 kW already used category III under ISO 730, with correspondingly larger pins. The two-speed PTO with 540 and 1,000 rpm allowed both light and power-hungry implements to be run on the same series. Between category II and III as well, older implements can still be used with reducer bushings, provided the tractor's lift capacity is not exceeded.
Sources: SpecCodex register, model data: Deutz-Fahr DX, Deutz-Fahr
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 88 hp (65 kW)correct |
| Rated speed | 2,300 rpmcorrect |
| Torque | 300 Nmcorrect |
| Speed at max. torque | 1,697 rpmcorrect |
| Cylinders | 5correct |
| Displacement | 4,712 cm³correct |
| Bore | 100 mmcorrect |
| Stroke | 120 mmcorrect |
| Injection pressure | 175 barcorrect |
| Cooling | air-cooledcorrect |
Dimensions and weights
| Length | 4,360 mmcorrect |
|---|---|
| Width | 2,304 mmcorrect |
| Height | 2,600 mmcorrect |
| Wheelbase | 2,558 mmcorrect |
| Ground clearance | 560 mmcorrect |
| Unladen weight | 4,275 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 12V/4R or 15V/5Rcorrect |
| Front tyres | 7.50-20 ASF (A: 14.9-24 AS)correct |
| Rear tyres | 16.9-38 AScorrect |
| Top speed | 25 km/hcorrect |
Working data
| Fuel tank capacity | 120 lcorrect |
|---|
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|
Other data
| Linkage category | Cat IIcorrect |
|---|---|
| PTO speed | 540 rpmcorrect |
Where this model stands
Power-to-weight ratio: 15.2 kW/t (65 kW / 4.3 t)
Power class: Universal (40–100 hp)
Stronger than 60% 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 Deutz-Fahr DX 90 have?
The Deutz-Fahr DX 90 delivers 88 hp.
How much does the Deutz-Fahr DX 90 weigh?
The unladen weight is 4,275 kg.
What engine does the Deutz-Fahr DX 90 have?
5 cylinders, 4,712 cm³ displacement, Diesel.
How fast does the Deutz-Fahr DX 90 go?
Top speed is 25 km/h.
What are the dimensions of the Deutz-Fahr DX 90?
4,360 mm × 2,304 mm × 2,600 mm.
When was the Deutz-Fahr DX 90 built?
Production years: 1978–1982.
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 28 individual figures for this model. They come from 3 recorded sources; 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) · Latvian open data portal (retrieved August 2026) · Values adopted and presented in our own form; changes from the source are possible. · How we check the data
Tractor in 3D section
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