Caterpillar C175-20 vs Cummins QSK95G4
The Caterpillar C175-20 and Cummins QSK95G4 are both diesel generator engines in a similar power class. Both are rated at roughly 3,832 kVA. Displacement is 107 L versus 95 L. The table below compares their full specifications side by side.
| Specification | Caterpillar C175-20 | Cummins QSK95G4 |
|---|---|---|
| Headline rating | 3,900 kVA | 3,763 kVA |
| Standby (50 Hz) | 3,120 kWe | 3,010 kWe |
| Prime (50 Hz) | 2,800 kWe | 2,690 kWe |
| Standby (60 Hz) | 3,900 kWe | — |
| Prime (60 Hz) | 3,500 kWe | — |
| Displacement | 107 L | 95 L |
| Configuration | V20 | V16 |
| Cylinders | 20 | 16 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Stationary | Unregulated |
| Dry weight | — | — |
| Origin | United States | United States |
Choosing between Caterpillar C175-20 and Cummins QSK95G4
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. The Caterpillar C175-20 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.