Cummins C70N6 vs Weichai WP4D77E300NG
The Cummins C70N6 and Weichai WP4D77E300NG are both natural gas generator engines in a similar power class. Both are rated at roughly 87 kVA. Displacement is 5.9 L versus 4.5 L. The table below compares their full specifications side by side.
| Specification | Cummins C70N6 | Weichai WP4D77E300NG |
|---|---|---|
| Headline rating | 88 kVA | 86 kVA |
| Standby (50 Hz) | — | 69 kWe |
| Prime (50 Hz) | — | 60 kWe |
| Standby (60 Hz) | 70 kWe | 69 kWe |
| Prime (60 Hz) | — | 63 kWe |
| Displacement | 5.9 L | 4.5 L |
| Configuration | L6 | L4 |
| Cylinders | 6 | 4 |
| Rated speed | 1,800 RPM | 1,500 / 1,800 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 C70N6 and Weichai WP4D77E300NG
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 Cummins C70N6 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.