Cummins C125N6 vs Yuchai YC6G205N-D30
The Cummins C125N6 and Yuchai YC6G205N-D30 are both natural gas generator engines in a similar power class. Both are rated at roughly 153 kVA. Displacement is 8.9 L versus 7.8 L. The table below compares their full specifications side by side.
| Specification | Cummins C125N6 | Yuchai YC6G205N-D30 |
|---|---|---|
| Headline rating | 156 kVA | 150 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | 120 kWe |
| Standby (60 Hz) | 125 kWe | — |
| Prime (60 Hz) | — | — |
| Displacement | 8.9 L | 7.8 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,800 RPM | 1,500 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Stationary | Unregulated |
| Dry weight | — | — |
| Origin | United States | China |
Choosing between Cummins C125N6 and Yuchai YC6G205N-D30
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 C125N6 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.