Head to head
Caterpillar D6K2 vs Liebherr L556 XPower
The Caterpillar D6K2 is a medium crawler dozer. The Liebherr L556 XPower is a large wheel loader with xpower power-split driveline.
Last reviewed 13 September 2026
Specifications side by side
| Caterpillar D6K2 | Liebherr L556 XPower | |
|---|---|---|
| Operating weight | 29,258lb (XL) / 30,664lb (LGP) | 19,600 - 21,600 kg |
| Net power | Cat C4.4, 130hp | - |
| Blade capacity | 4.26yd3 (XL) / 4.98yd3 (LGP) | - |
| Tipping load | - | 9,300 - 13,750 kg |
| Bucket capacity | - | 2.80 - 10.00 m3 |
| Rated output ISO 14396 / ECE-R.120 | - | 183 kW / 249 HP |
Sources: Caterpillar D6K2, Liebherr L556 XPower. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D6K2 if...
A medium dozer for site grading, cut-and-fill and light earthmoving where a full-size dozer would be overkill. It is hired by groundworks and landscaping contractors needing precise grading as much as raw pushing power.
Listed by
- B & T Plant Hire - Gravesend
- B & T Plant Hire Ltd - Morden
Buy or hire the L556 XPower if...
A large wheel loader for quarry and bulk material handling work. Liebherr's XPower driveline splits power between hydrostatic and mechanical drive to cut fuel use on repetitive load-and-carry cycles.
Listed by
- ChapmanPlant - Bristol, Iron Acton
Common questions
What is the difference between the Caterpillar D6K2 and the Liebherr L556 XPower?
The Caterpillar D6K2 is a medium crawler dozer; the Liebherr L556 XPower is a large wheel loader with XPower power-split driveline.
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