Caterpillar C175-16 vs Cummins QSK78G16
The Caterpillar C175-16 and Cummins QSK78G16 are both diesel generator engines in a similar power class. Both are rated at roughly 3,000 kVA. Displacement is 85.6 L versus 78 L. The table below compares their full specifications side by side.
| Specification | Caterpillar C175-16 | Cummins QSK78G16 |
|---|---|---|
| Headline rating | 3,000 kVA | 3,000 kVA |
| Standby (50 Hz) | 2,400 kWe | 2,400 kWe |
| Prime (50 Hz) | 2,180 kWe | 2,200 kWe |
| Standby (60 Hz) | 3,000 kWe | — |
| Prime (60 Hz) | 2,725 kWe | — |
| Displacement | 85.6 L | 78 L |
| Configuration | V16 | V18 |
| Cylinders | 16 | 18 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Final Tier 4 | 2g TA Luft |
| Dry weight | — | — |
| Origin | United States | United Kingdom |
Choosing between Caterpillar C175-16 and Cummins QSK78G16
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing.