Caterpillar G3412 vs Mitsubishi GS6R2
The Caterpillar G3412 and Mitsubishi GS6R2 are both natural gas generator engines in a similar power class. The Caterpillar G3412 is the higher-output unit (625 kVA vs 563 kVA). Displacement is 27 L versus 30 L. The table below compares their full specifications side by side.
| Specification | Caterpillar G3412 | Mitsubishi GS6R2 |
|---|---|---|
| Headline rating | 625 kVA | 563 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | 500 kWe | 450 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 27 L | 30 L |
| Configuration | V12 | L6 |
| Cylinders | 12 | 6 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Stationary | Unregulated |
| Dry weight | — | — |
| Origin | United States | Japan |
Choosing between Caterpillar G3412 and Mitsubishi GS6R2
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 Caterpillar G3412 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.