Cummins QSX15G9 vs Hyundai DP158CC
The Cummins QSX15G9 and Hyundai DP158CC are both diesel generator engines in a similar power class. Both are rated at roughly 623 kVA. Displacement is 15 L versus 15.1 L. The table below compares their full specifications side by side.
| Specification | Cummins QSX15G9 | Hyundai DP158CC |
|---|---|---|
| Headline rating | 625 kVA | 620 kVA |
| Standby (50 Hz) | — | 496 kWe |
| Prime (50 Hz) | — | 450 kWe |
| Standby (60 Hz) | 500 kWe | 558 kWe |
| Prime (60 Hz) | 450 kWe | 506 kWe |
| Displacement | 15 L | 15.1 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | Unregulated |
| Dry weight | — | — |
| Origin | United States | South Korea |
Choosing between Cummins QSX15G9 and Hyundai DP158CC
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 Cummins QSX15G9 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.