Cummins QSB6.7-G31 vs Hyundai DP086CC
The Cummins QSB6.7-G31 and Hyundai DP086CC are both diesel generator engines in a similar power class. Both are rated at roughly 281 kVA. Displacement is 6.7 L versus 7.5 L. The table below compares their full specifications side by side.
| Specification | Cummins QSB6.7-G31 | Hyundai DP086CC |
|---|---|---|
| Headline rating | 281 kVA | 280 kVA |
| Standby (50 Hz) | 225 kWe | 224 kWe |
| Prime (50 Hz) | 180 kWe | 203 kWe |
| Standby (60 Hz) | — | 257 kWe |
| Prime (60 Hz) | — | 233 kWe |
| Displacement | 6.7 L | 7.5 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | China | South Korea |
Choosing between Cummins QSB6.7-G31 and Hyundai DP086CC
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 QSB6.7-G31 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.