Sisu NA-140
Built: 1988-1990 · Series: NA-140
More machines from model year 1988
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Sisu NA-140 – the collective page of the Finnish off-road truck, known in service as the Nasu: eight-cylinder engines, 3,520 to 6,460 cm³, gross weights of 6,800 to 7,200 kg, BT and M versions
This collective page gathers the NA-140 range from the Finnish truck maker Sisu, an off-road truck that became known in the Finnish armed forces under the nickname Nasu. Sisu, whose name means stamina and toughness in Finnish, has built trucks and off-road vehicles for decades tailored specifically to Finland's climate and terrain; the NA-140 was among the brand's rugged military and forestry trucks. The suffixes BT and M in the type designation mark different body and equipment variants of the chassis.
Read on 3 more paragraphs
The register lists 5 versions with 116 to 142 kW from eight-cylinder engines of 3,520 to 6,460 cm³ displacement, unladen weights from 4,800 to 5,200 kg and gross weights from 6,800 to 7,200 kg; length is a constant 7,550 mm, width a constant 1,910 mm.
Sisu trucks such as the NA-140 shaped Finland's military and forestry vehicle fleet for decades and were valued for their off-road capability and winter suitability, in a niche barely served by the large European manufacturers.
On a used Sisu NA-140, rust on the frame and load platform, the condition of the eight-cylinder engine and the transfer case, the function of the four-wheel-drive clutch, and the seal of the cab after decades of off-road use all count; parts run through Sisu Auto and specialist Finnish military-vehicle workshops.
Sources: SpecCodex register, model data: Sisu NA-140, Sisu Auto (manufacturer), Zulassungsdaten Traficom (Finnland)
Technical data
Engine
| Power | 142 kWcorrect |
|---|---|
| Cylinders | 8correct |
| Displacement | 3,520 cm³correct |
Dimensions and weights
| Length | 7,550 mmcorrect |
|---|---|
| Width | 1,910 mmcorrect |
| Unladen weight | 4,850 kgcorrect |
| Gross vehicle weight | 6,800 kgcorrect |
Drivetrain and chassis
| Gears | 6correct |
|---|
Where this model stands
Power-to-weight ratio: 29.3 kW/t (142 kW / 4.8 t)
Stronger than 18% of the trucks in the register — out of 25,242 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Sisu NA-140 have?
The Sisu NA-140 delivers 142 kW.
How much does the Sisu NA-140 weigh?
The unladen weight is 4,850 kg.
What is the gross vehicle weight of the Sisu NA-140?
6,800 kg.
What engine does the Sisu NA-140 have?
8 cylinders, 3,520 cm³ displacement.
What are the dimensions of the Sisu NA-140?
7,550 mm × 1,910 mm.
When was the Sisu NA-140 built?
Production years: 1988-1990.
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.
- 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 9 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.
The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.
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Other models in this series
Sources: Traficom — Finnish vehicle register (retrieved August 2026) · How we check the data
Truck in 3D section
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