Cummins QSK50G14 vs MTU MTU 12V4000 G14F
The Cummins QSK50G14 and MTU MTU 12V4000 G14F are both diesel generator engines in a similar power class. Both are rated at roughly 1,759 kVA. Displacement is 50 L versus 57.2 L. The table below compares their full specifications side by side.
| Specification | Cummins QSK50G14 | MTU MTU 12V4000 G14F |
|---|---|---|
| Headline rating | 1,760 kVA | 1,758 kVA |
| Standby (50 Hz) | 1,408 kWe | 1,406 kWe |
| Prime (50 Hz) | 1,300 kWe | 1,278 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 50 L | 57.2 L |
| Configuration | V16 | V12 |
| Cylinders | 16 | 12 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China III / U.S. EPA Tier 2 | Unregulated |
| Dry weight | — | — |
| Origin | United Kingdom | Germany |
Choosing between Cummins QSK50G14 and MTU MTU 12V4000 G14F
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 QSK50G14 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.