Doosan GV158TI vs Generac SG275
The Doosan GV158TI and Generac SG275 are both natural gas generator engines in a similar power class. Both are rated at roughly 349 kVA. Displacement is 14.6 L versus 14.2 L. The table below compares their full specifications side by side.
| Specification | Doosan GV158TI | Generac SG275 |
|---|---|---|
| Headline rating | 353 kVA | 344 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | 282 kWe | — |
| Standby (60 Hz) | — | 275 kWe |
| Prime (60 Hz) | — | 248 kWe |
| Displacement | 14.6 L | 14.2 L |
| Configuration | V8 | L6 |
| Cylinders | 8 | 6 |
| Rated speed | 1,500 RPM | 1,800 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | U.S. EPA Stationary |
| Dry weight | — | — |
| Origin | South Korea | United States |
Choosing between Doosan GV158TI and Generac SG275
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 Doosan GV158TI has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.