Waukesha VGF48GSI/GSID (P48GSI/GSID) vs Weichai 12M33D900E310NG
The Waukesha VGF48GSI/GSID (P48GSI/GSID) and Weichai 12M33D900E310NG are both natural gas generator engines in a similar power class. Both are rated at roughly 1,022 kVA. Displacement is 48 L versus 39.6 L. The table below compares their full specifications side by side.
| Specification | Waukesha VGF48GSI/GSID (P48GSI/GSID) | Weichai 12M33D900E310NG |
|---|---|---|
| Headline rating | 1,031 kVA | 1,013 kVA |
| Standby (50 Hz) | — | 810 kWe |
| Prime (50 Hz) | — | 800 kWe |
| Standby (60 Hz) | 825 kWe | 864 kWe |
| Prime (60 Hz) | 750 kWe | — |
| Displacement | 48 L | 39.6 L |
| Configuration | V16 | V12 |
| Cylinders | 16 | 12 |
| Rated speed | 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | United States | China |
Choosing between Waukesha VGF48GSI/GSID (P48GSI/GSID) 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 Waukesha VGF48GSI/GSID (P48GSI/GSID) has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.