Challenger MT555B MFWD 2WD – specifications
Series: Other models
Build year not documented · Data origin: Directory data · sources
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The Challenger MT555B MFWD is a heavy tractor from the MT series, designed in the variant considered here as a two-wheel-drive model. The vehicle is powered by a six-cylinder diesel engine of the C6.6 ACERT type, which has a displacement of 6,600.7 cm³. The design aims for high traction and stable working conditions in the field, with the mechanical configuration tailored to the requirements of large agricultural areas.
The engine reaches its rated speed at 2,200 rpm and is equipped with turbocharging and aftercooling to increase power density. With an empty weight of 7,302.8 kg, the mass ensures good traction, while the ground clearance of 440.2 mm allows it to overcome obstacles on uneven terrain. The Auto Power transmission enables a maximum speed of 40.2 km/h, allowing for fast road travel between work sites. The lifting capacity of 6,479 kg permits the use of heavy mounted implements, supported by a pump flow rate of 180.2 l/min for hydraulic functions. The fuel tank holds 370.2 l, ensuring long working intervals without refueling stops.
Within the series, this model is positioned by its specific technical configuration. The PTO power of 130 hp defines the possible drive force for mounted or trailed implements. The onboard voltage of 24 V ensures the electrical supply for the onboard electronics. The dimensions, with a length of 4,840 mm and a width of 2,060.4 mm, determine maneuverability and transport dimensions. The wheelbase of 2,892.6 mm influences stability when pulling heavy loads. These parameters characterize the application range of this tractor within its respective weight class.
Challenger – other models: the collective page of tractors outside the named ranges, from the compacts MT225 to MT295 through the wheeled MT425 to MT695 to the tracked MT700 and MT800, 17 to 471 kW, Caterpillar
This page gathers the Challenger tractors the register could not assign to a named range – the brand Caterpillar founded in 1987 with the Challenger 65, the first agricultural tracked tractor with rubber belts, and sold in 2002 to AGCO, which used the name until 2022 for a complete tractor programme. The type logic of the AGCO era: MT stands for the brand, the first digit for the range – MT200 the compacts of Iseki manufacture, MT300 and MT400 the small and medium ones, MT500 and MT600 the four- and six-cylinder wheeled tractors created as sister models of the Massey Ferguson 5400 to 8400 in Beauvais, MT700 and MT800 the rubber-tracked tractors from Jackson, Minnesota, MT900 the articulated ones – the following digits the power step and B, C, D and E the generations; 2WD and MFWD distinguish rear- and four-wheel drive. The engines are Caterpillar (C6.6, C15, C18) in the tracked and articulated tractors of the early years, AGCO Power (Sisu) in the later ones and Iseki in the compacts; the register span of 1.1 to 18.1 litres shows that breadth.
Read on 3 more paragraphs
The register lists here 99 versions with 16.8 to 470.5 kW from three- to seven-cylinders of 1,123 to 18,124 cm³, PTO outputs from 18 to 533 hp, lift capacities from 268 to 8,845 kg, unladen weights from 720 to 27,216 kg and lengths from 1,480 to 7,570 mm.
The Challenger MT700 and MT800 remained to the last the benchmark of the tracked tractor against which John Deere set its 8RT and 9RT and Case IH the Quadtrac; since 2022 the machines run as Fendt MT.
On used tracked tractors the condition of rubber belts, rollers and drive wheels (the most expensive item) counts, on all of them operating hours, engine and exhaust aftertreatment, powershift or stepless transmission, hydraulics and electronics; parts run through AGCO and, for the Cat engines, through Caterpillar.
Sources: SpecCodex register, model data: Challenger (weitere Modelle), Challenger (AGCO, Hersteller)
Technical data
Engine
| Engine model | C6.6 ACERTcorrect |
|---|---|
| Rated speed | 2,200 rpmcorrect |
| Cylinders | 6correct |
| Displacement | 6,600.7 cm³correct |
| Aspiration | Turbocharged and Aftercooledcorrect |
| Coolant capacity | 25.7 lcorrect |
Dimensions and weights
| Length | 4,840 mmcorrect |
|---|---|
| Width | 2,060.4 mmcorrect |
| Wheelbase | 2,892.6 mmcorrect |
| Ground clearance | 440.2 mmcorrect |
| Unladen weight | 7,302.8 kgcorrect |
Drivetrain and chassis
| Gearbox type | Auto Powercorrect |
|---|---|
| Top speed | 40.2 km/hcorrect |
Working data
| Lifting capacity | 6,479 kgcorrect |
|---|---|
| Pump flow | 180.2 l/mincorrect |
| Hydraulic oil capacity | 70 lcorrect |
| Fuel tank capacity | 370.2 lcorrect |
Other data
| PTO output | 130 hpcorrect |
|---|---|
| System voltage | 24 Vcorrect |
More machines with this engine (C6.6 ACERT, 12)
Frequently asked questions
How much does the Challenger MT555B MFWD weigh?
The unladen weight is 7,303 kg.
What engine does the Challenger MT555B MFWD have?
6 cylinders, 6,601 cm³ displacement.
How fast does the Challenger MT555B MFWD go?
Top speed is 40.2 km/h.
What is the PTO output of the Challenger MT555B MFWD?
PTO output is 130 hp.
How much does the rear linkage of the Challenger MT555B MFWD lift?
The rear linkage lifts 6,479 kg.
What are the dimensions of the Challenger MT555B MFWD?
4,840 mm × 2,060 mm.
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.
- 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 19 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: RitchieSpecs equipment specifications (retrieved August 2026) · Data sources and cross-checks
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