Eicher Mammut 3551 HS / TL
Built: 1971–1973 · Series: Baureihe 51
More machines from model year 1971
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Eicher series 51 – 3151 Tiger II and Mammut 3551 HS/TL: Bavarian classics with 2,944 to 3,927 cc displacement, three- and four-cylinder engines and 2,150 to 2,800 kg
Series 51 belongs to Eicher's production in Bavaria, with plants at Forstern and Dingolfing, and lists here the 3151 Tiger II and the Mammut 3551 HS/TL. Both names continue Eicher's tradition of predator naming: Tiger II as the revised second generation of the Tiger name, Mammut denoting the more powerful types in the marque.
Read on 3 more paragraphs
The register lists 2 variants with 25.6 kW, or 35 hp, of power from three- and four-cylinder engines of 2,944 to 3,927 cc displacement at a rated speed of 2,000 rpm and 134 Nm of torque. Unladen weights fall between 2,150 and 2,800 kg, dimensions range from 3,180 to 3,670 mm in length, 1,650 to 1,960 mm in width and 1,550 to 1,720 mm in height.
By pairing the Tiger II with the Mammut, series 51 shows the transition between the mid and upper power classes within Eicher's 1960s line-up, competing directly with comparable models from Fendt and Deutz in the West German market.
When buying used, pay attention to the specific powertrain, as the three- and four-cylinder variants need different parts. Clutch, gearbox and hydraulic pump should be checked for wear and tightness, and the bodywork for rust around the wings and bonnet. Front axle bushings and steering linkage are worth inspecting for play built up over decades of field work. An active network of collectors and parts dealers exists for these Eicher classics.
Sources: SpecCodex register, model data: Eicher Baureihe 51
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 75 hpcorrect |
| Rated speed | 2,000 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 3,927 cm³correct |
| Cooling | air-cooledcorrect |
Dimensions and weights
| Length | 3,670 mmcorrect |
|---|---|
| Width | 1,960 mmcorrect |
| Height | 1,720 mmcorrect |
| Wheelbase | 2,440 mmcorrect |
| Unladen weight | 2,800 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 12V / 4Rcorrect |
| Front tyres | 6, 50 - 20correct |
| Rear tyres | 16, 9 - 34correct |
| Top speed | 27 km/hcorrect |
Origin and approval
| Units built | ca: 220correct |
|---|
Where this model stands
Power-to-weight ratio: 19.7 kW/t (55 kW / 2.8 t)
Power class: Universal (40–100 hp)
Stronger than 52% 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 Eicher Mammut 3551 HS / TL have?
The Eicher Mammut 3551 HS / TL delivers 75 hp.
How much does the Eicher Mammut 3551 HS / TL weigh?
The unladen weight is 2,800 kg.
What engine does the Eicher Mammut 3551 HS / TL have?
4 cylinders, 3,927 cm³ displacement, Diesel.
How fast does the Eicher Mammut 3551 HS / TL go?
Top speed is 27 km/h.
What are the dimensions of the Eicher Mammut 3551 HS / TL?
3,670 mm × 1,960 mm × 1,720 mm.
When was the Eicher Mammut 3551 HS / TL built?
Production years: 1971–1973.
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.
- 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 17 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
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