Cummins GGMC GM 3.0L vs Weichai WP4D40E200NG
The Cummins GGMC GM 3.0L and Weichai WP4D40E200NG are both natural gas generator engines in a similar power class. The Weichai WP4D40E200NG is the higher-output unit (38 kVA vs 36 kVA). Displacement is 2.97 L versus 4.1 L. The table below compares their full specifications side by side.
| Specification | Cummins GGMC GM 3.0L | Weichai WP4D40E200NG |
|---|---|---|
| Headline rating | 36 kVA | 38 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | 30 kWe |
| Standby (60 Hz) | 29 kWe | — |
| Prime (60 Hz) | 26 kWe | — |
| Displacement | 2.97 L | 4.1 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| 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 GGMC GM 3.0L and Weichai WP4D40E200NG
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 WP4D40E200NG has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.