Head to head
Caterpillar D4K2 vs Liebherr L556 XPower
The Caterpillar D4K2 is a small 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 D4K2 | Liebherr L556 XPower | |
|---|---|---|
| Operating weight | 8,168kg (XL) / 8,476kg (LGP) | 19,600 - 21,600 kg |
| Engine power | 92hp (68.8kW), Cat C4.4 ACERT | - |
| Blade capacity | 1.98m3 (XL) / 1.85m3 (LGP) | - |
| Ground pressure | 38.6kPa (XL) / 29.2kPa (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 D4K2, Liebherr L556 XPower. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D4K2 if...
Cat's smallest crawler dozer, used for grading, site clearance and landscaping where a larger machine would be too heavy or too wide. The LGP undercarriage option suits soft or wet ground.
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 D4K2 and the Liebherr L556 XPower?
The Caterpillar D4K2 is a small crawler dozer; the Liebherr L556 XPower is a large wheel loader with XPower power-split driveline.
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