Cummins K38N-G8 vs Weichai 12M33D900E310NG
The Cummins K38N-G8 and Weichai 12M33D900E310NG are both natural gas generator engines in a similar power class. Both are rated at roughly 1,007 kVA. Displacement is 37.8 L versus 39.6 L. The table below compares their full specifications side by side.
| Specification | Cummins K38N-G8 | Weichai 12M33D900E310NG |
|---|---|---|
| Headline rating | 1,000 kVA | 1,013 kVA |
| Standby (50 Hz) | — | 810 kWe |
| Prime (50 Hz) | 800 kWe | 800 kWe |
| Standby (60 Hz) | — | 864 kWe |
| Prime (60 Hz) | 800 kWe | — |
| Displacement | 37.8 L | 39.6 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | China | China |
Choosing between Cummins K38N-G8 and Weichai 12M33D900E310NG
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 Weichai 12M33D900E310NG has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.