Caterpillar C15 vs Cummins QSNT-G4X
The Caterpillar C15 and Cummins QSNT-G4X are both diesel generator engines in a similar power class. Both are rated at roughly 500 kVA. Displacement is 15.2 L versus 14 L. The table below compares their full specifications side by side.
| Specification | Caterpillar C15 | Cummins QSNT-G4X |
|---|---|---|
| Headline rating | 500 kVA | 500 kVA |
| Standby (50 Hz) | 400 kWe | 400 kWe |
| Prime (50 Hz) | 360 kWe | 360 kWe |
| Standby (60 Hz) | 500 kWe | — |
| Prime (60 Hz) | 455 kWe | — |
| Displacement | 15.2 L | 14 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | Unregulated |
| Dry weight | — | — |
| Origin | United States | China |