Cummins QSK38-G31 vs Weichai 12M33D1500E310
The Cummins QSK38-G31 and Weichai 12M33D1500E310 are both diesel generator engines in a similar power class. Both are rated at roughly 1,682 kVA. Displacement is 38 L versus 39.6 L. The table below compares their full specifications side by side.
| Specification | Cummins QSK38-G31 | Weichai 12M33D1500E310 |
|---|---|---|
| Headline rating | 1,675 kVA | 1,688 kVA |
| Standby (50 Hz) | 1,340 kWe | 1,350 kWe |
| Prime (50 Hz) | 1,218 kWe | 1,215 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 38 L | 39.6 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage III / Unregulated | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | China | China |
Choosing between Cummins QSK38-G31 and Weichai 12M33D1500E310
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 12M33D1500E310 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.