Generac SG035 vs Weichai WP4D44E201NG
The Generac SG035 and Weichai WP4D44E201NG are both natural gas generator engines in a similar power class. The Generac SG035 is the higher-output unit (44 kVA vs 38 kVA). Displacement is 4.5 L versus 4.1 L. The table below compares their full specifications side by side.
| Specification | Generac SG035 | Weichai WP4D44E201NG |
|---|---|---|
| Headline rating | 44 kVA | 38 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | 30 kWe |
| Standby (60 Hz) | 35 kWe | — |
| Prime (60 Hz) | 32 kWe | — |
| Displacement | 4.5 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 Generac SG035 and Weichai WP4D44E201NG
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 Generac SG035 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.