Valmet 455/445-4
Built: 1989–1994 · Series: 55 er-Baureihe
More machines from model year 1989
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Valmet 55 series – Finnish farm tractors of the 1970s from Suolahti: 255 to 755(-4), 39 to 66 kW from three- and four-cylinder engines
The Valmet 55 series from Finland covers the three- and four-cylinder farm tractors of the 1970s. The type designations 255 to 755 give the range, the -4 suffix four-wheel drive; the models 455/445-4 and 755/755-4 show the parallel two- and four-wheel-drive versions of the same power class.
Read on 3 more paragraphs
The register lists here 5 versions with 39 to 66.2 kW from three- to four-cylinders of 3,298 to 4,397 cc, unladen weights from 2,670 to 3,760 kg, lengths from 3,710 to 4,515 mm, widths from 1,965 to 2,130 mm and heights from 2,460 to 2,690 mm, torque from 198 to 325 Nm at rated speeds of 2,150 to 2,350 rpm.
Valmet built its tractors at the Suolahti plant in central Finland, supplying mainly the Finnish and Scandinavian market; the 55 series covered the medium power class for the forestry and farming operations there. The parallel two- and four-wheel-drive versions let buyers choose, depending on the application, between economy and traction, depending on whether the work was mainly in the field or in the forest.
On the 55 series, what counts is the condition and compression of the three- or four-cylinder diesel, the condition of the four-wheel-drive clutch on the -4 models, the tightness of the hydraulics and lift, and rust on the cab and mudguards; parts today run through the successor network of Valtra.
Sources: SpecCodex register, model data: Valmet 55er-Baureihe, Valtra (Nachfolgemarke von Valmet, Hersteller)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 67 hp (49.3 kW)correct |
| Rated speed | 2,350 rpmcorrect |
| Torque | 227 Nmcorrect |
| Cylinders | 3correct |
| Displacement | 3,298 cm³correct |
| Bore | 108 mmcorrect |
| Stroke | 120 mmcorrect |
| Compression ratio | 16correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,710 mmcorrect |
|---|---|
| Width | 1,965 mmcorrect |
| Height | 2,460 mmcorrect |
| Wheelbase | 2,112 mmcorrect |
| Ground clearance | 405 mmcorrect |
| Unladen weight | 2,720 kgcorrect |
Drivetrain and chassis
| Drive | rear- or four-wheel drivecorrect |
|---|---|
| Gearbox | 8 V/4 R and 12 V/8 Rcorrect |
| Front tyres | 10.00-16 ASF (A: 11.2 R 24 AS)correct |
| Rear tyres | 16.9 R 30 AScorrect |
| Top speed | 30 km/hcorrect |
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|
Where this model stands
Power-to-weight ratio: 18.1 kW/t (49 kW / 2.7 t)
Power class: Universal (40–100 hp)
Stronger than 46% 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 Valmet 455/445-4 have?
The Valmet 455/445-4 delivers 67 hp.
How much does the Valmet 455/445-4 weigh?
The unladen weight is 2,720 kg.
What engine does the Valmet 455/445-4 have?
3 cylinders, 3,298 cm³ displacement, Diesel.
How fast does the Valmet 455/445-4 go?
Top speed is 30 km/h.
What are the dimensions of the Valmet 455/445-4?
3,710 mm × 1,965 mm × 2,460 mm.
When was the Valmet 455/445-4 built?
Production years: 1989–1994.
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 23 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
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
