Engen Os 3SL-300-LL
Built: 2013 · Series: Other models
More machines from model year 2013
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
Engen Os 3SL-300-LL – EU class O4 trailer: 28,000 kg gross vehicle weight, 5,790 kg unladen weight, 2,550 mm wide, built 2013
With a gross vehicle weight of 28,000 kg, the Engen Os 3SL-300-LL falls into EU trailer class O4, the heavy trailers and semi-trailers above 10 tonnes hauled in heavy-goods transport with their own air brake system behind trucks or tractor units. Vehicles of this weight class carry their load across several axles and need a correspondingly load-bearing chassis.
Read on 3 more paragraphs
The 3SL-300-LL was built in 2013 and has an unladen weight of 5,790 kg; against a gross vehicle weight of 28,000 kg, that leaves a payload of 22,210 kg. Width is 2,550 mm.
Trailers of this size carry the actual load volume in road haulage, while the towing vehicle supplies drive and steering. From class O3 upward, the EU requires a dedicated air brake system with sound lines and working brake cylinders on every axle so that braking takes hold reliably along the whole length of the vehicle. A trailer of this weight class is towed by a truck, not a car.
When buying used, an air-braked trailer of this size lives or dies on the brake system: check lines, brake cylinders and linings on every axle for corrosion, leaks and wear. Inspect the chassis and frame for rust and cracks, along with axle bearings, suspension, tyres and tread depth, lighting, and the coupling to the towing vehicle. With a build year of 2013, also check the condition of brake lines and axle suspension after many years in service.
Sources: SpecCodex-Register: Kennwerte des Modells Engen Os 3SL-300-LL
Technical data
Dimensions and weights
| Width | 2,550 mmcorrect |
|---|---|
| Wheelbase | 611 mmcorrect |
| Unladen weight | 5,790 kgcorrect |
| Gross vehicle weight | 28,000 kgcorrect |
Drivetrain and chassis
| Top speed | 100 km/hcorrect |
|---|
Frequently asked questions
How much does the Engen Os 3SL-300-LL weigh?
The unladen weight is 5,790 kg.
What is the gross vehicle weight of the Engen Os 3SL-300-LL?
28,000 kg.
Up to what speed is the Engen Os 3SL-300-LL approved?
Approved up to 100 km/h.
When was the Engen Os 3SL-300-LL built?
Production years: 2013.
What to check before buying
- Search the frame and welds at the axle mounts — that is where cracks start.
- Check the brakes and the last inspection in the papers.
- Work the gross weight against the towing vehicle before buying.
- Compare the chassis number with the papers.
- Look at the floor, cover or body from the inside — rust does not show from outside.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 7 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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Sources: RDW — Dutch national vehicle register (retrieved August 2026) · How we check the data
Trailer in 3D section
Turn the model, look inside and click an assembly — each one is explained.
