Kenworth K-125
Built: 1973 · Series: Other models
More machines from model year 1973
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
Kenworth – other models: the collective page of trucks outside the named ranges, from the long-nose W900 to the T370, six- and eight-cylinder engines of 6.7 to 14.6 litres displacement, 257 to 356 kW
This page gathers Kenworth trucks the register could not assign to a named range – among them the W900, the marque's long-nose classic, and the medium-duty T370. Kenworth, founded in 1923 in the US state of Washington and part of the commercial-vehicle group PACCAR since 1945, still builds its heavy trucks in Renton near Seattle and in Chillicothe, Ohio. The W900, with its long bonnet and upright grille, has been the flagship of American long-haul trucks since the 1960s, made famous by numerous films and haulier fleets; the T370 is a shorter-bonneted chassis for distribution and construction-site transport.
Read on 3 more paragraphs
The register lists here 10 versions with 257 to 356 kW from six- to eight-cylinder engines of 6,700 to 14,600 cm³, unladen weights from 5,560 to 11,500 kg, gross weights from 11,900 to 23,144 kg, lengths from 5,800 to 11,000 mm and widths from 2,450 to 2,600 mm.
Kenworth ranks alongside Peterbilt, also a PACCAR brand, and Freightliner among the best-known truck makers of North America; the W900 remains sought after among long-haul drivers and fleet operators for its individual configurability despite its age, while ranges such as the T370 are tailored to municipal and construction-site use.
On these vehicles, rust on the frame and cab suspension, the condition of the engine and gearbox (often Cummins or PACCAR engines with manual Eaton-Fuller gearboxes), the condition of the brake system and, on tractor units, the fifth wheel count; parts run through the Kenworth and PACCAR dealer network.
Sources: SpecCodex register, model data: Kenworth (weitere Modelle), Kenworth (manufacturer), Zulassungsdaten Traficom (Finnland)
Technical data
Engine
| Power | 257 kWcorrect |
|---|---|
| Cylinders | 6correct |
| Displacement | 14,000 cm³correct |
Dimensions and weights
| Length | 8,140 mmcorrect |
|---|---|
| Width | 2,540 mmcorrect |
| Unladen weight | 8,080 kgcorrect |
Drivetrain and chassis
| Gears | 13correct |
|---|
Where this model stands
Power-to-weight ratio: 31.8 kW/t (257 kW / 8.1 t)
Stronger than 43% 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 Kenworth K-125 have?
The Kenworth K-125 delivers 257 kW.
How much does the Kenworth K-125 weigh?
The unladen weight is 8,080 kg.
What engine does the Kenworth K-125 have?
6 cylinders, 14,000 cm³ displacement.
What are the dimensions of the Kenworth K-125?
8,140 mm × 2,540 mm.
When was the Kenworth K-125 built?
Production years: 1973.
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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 8 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.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Other models in this series
Sources: Traficom — Finnish vehicle register (retrieved August 2026) · How we check the data
Truck in 3D section
Turn the model, look inside and click an assembly — each one is explained.
