Head to head
Caterpillar D6K LGP vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 680kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 680kg.
Specifications side by side
| Caterpillar D6K LGP | Komatsu D51PX | |
|---|---|---|
| Operating weight | 13.5 tonnes | 14,180kg |
| Engine | Cat C6.6 ACERT, 97kW | - |
| Blade | 6-way blade, 3.08m front width | - |
| Track width | 760mm | - |
| Class | - | 14 tonne |
Sources: Caterpillar D6K LGP, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D6K LGP if...
A low ground pressure version of Cat's D6K dozer, built with wider tracks to work on soft or wet ground without sinking in. Groundworks and landfill contractors use the LGP variant over the standard D6K where the site itself, not just the job, dictates the machine.
Listed by
- Eco Plant Hire And Sales Ltd - Peterborough, Whittlesey
Buy or hire the D51PX if...
- you want one that is the bigger machine by 680kg
A mid-size dozer built with wider, low ground pressure tracks for soft or wet ground. Groundworks and landfill contractors choose the PX variant over a standard-track D51 where the ground itself would otherwise bog a machine down.
Listed by
- B & T Plant Hire - Gravesend
- B & T Plant Hire Ltd - Morden
Common questions
What is the difference between the Caterpillar D6K LGP and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 680kg. The Caterpillar D6K LGP is a low ground pressure track-type bulldozer; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
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