Cummins QSK38-G4 vs Mitsubishi S12R-Y2PTAW-1
The Cummins QSK38-G4 and Mitsubishi S12R-Y2PTAW-1 are both diesel generator engines in a similar power class. Both are rated at roughly 1,564 kVA. Displacement is 37.7 L versus 49.03 L. The table below compares their full specifications side by side.
| Specification | Cummins QSK38-G4 | Mitsubishi S12R-Y2PTAW-1 |
|---|---|---|
| Headline rating | 1,564 kVA | 1,563 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | — |
| Standby (60 Hz) | 1,251 kWe | 1,250 kWe |
| Prime (60 Hz) | 1,126 kWe | 1,125 kWe |
| Displacement | 37.7 L | 49.03 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | U.S. EPA Tier 2 |
| Dry weight | — | — |
| Origin | United States | Japan |