Cummins QSK50-G4 vs VMAN DE58A5
The Cummins QSK50-G4 and VMAN DE58A5 are both diesel generator engines in a similar power class. Both are rated at roughly 1,704 kVA. Displacement is 50.3 L versus 57.2 L. The table below compares their full specifications side by side.
| Specification | Cummins QSK50-G4 | VMAN DE58A5 |
|---|---|---|
| Headline rating | 1,700 kVA | 1,708 kVA |
| Standby (50 Hz) | 1,360 kWe | 1,366 kWe |
| Prime (50 Hz) | 1,232 kWe | 1,242 kWe |
| Standby (60 Hz) | 1,500 kWe | — |
| Prime (60 Hz) | 1,365 kWe | — |
| Displacement | 50.3 L | 57.2 L |
| Configuration | V16 | V12 |
| Cylinders | 16 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | Unregulated |
| Dry weight | — | — |
| Origin | United States | China |
Choosing between Cummins QSK50-G4 and VMAN DE58A5
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 VMAN DE58A5 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.