Head to head
Caterpillar D3 vs Caterpillar D4K2
The Caterpillar D3 is the bigger machine by 1,194kg and has 9kW more power.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Caterpillar D3 is the bigger machine by 1,194kg.
- Engine power: the Caterpillar D3 has 9kW more power.
Specifications side by side
| Caterpillar D3 | Caterpillar D4K2 | |
|---|---|---|
| Operating weight | 9362kg (20,640lb) | 8,168kg (XL) / 8,476kg (LGP) |
| Engine power | 77.6kW (104hp) | 92hp (68.8kW), Cat C4.4 ACERT |
| Blade capacity | 2.19m3, or 2.34m3 with LGP tracks | 1.98m3 (XL) / 1.85m3 (LGP) |
| Engine | Cat C3.6 | - |
| Ground pressure | - | 38.6kPa (XL) / 29.2kPa (LGP) |
Sources: Caterpillar D3, Caterpillar D4K2. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D3 if...
- you want one that is the bigger machine by 1,194kg
- you want one that has 9kW more power
Caterpillar's smallest crawler dozer, used for fine grading, landscaping and confined-site work where a full-size dozer won't fit. Common in UK plant hire fleets alongside mini excavators.
Listed by
- B & T Plant Hire - Gravesend
- B & T Plant Hire Ltd - Morden
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
Common questions
What is the difference between the Caterpillar D3 and the Caterpillar D4K2?
The Caterpillar D3 is the bigger machine by 1,194kg and has 9kW more power. The Caterpillar D3 is a small crawler dozer; the Caterpillar D4K2 is a small crawler dozer.
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