Cummins L9G17 vs Isuzu 6UZ1X
The Cummins L9G17 and Isuzu 6UZ1X are both diesel generator engines in a similar power class. Both are rated at roughly 283 kVA. Displacement is 8.8 L versus 9.839 L. The table below compares their full specifications side by side.
| Specification | Cummins L9G17 | Isuzu 6UZ1X |
|---|---|---|
| Headline rating | 284 kVA | 282 kVA |
| Standby (50 Hz) | 227 kWe | 225.7 kWe |
| Prime (50 Hz) | 207 kWe | 205.2 kWe |
| Standby (60 Hz) | 232 kWe | 257.4 kWe |
| Prime (60 Hz) | 212 kWe | 234 kWe |
| Displacement | 8.8 L | 9.839 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Final Tier 4 / EU Stage V | Euro Stage IIIA / U.S. EPA Tier 3 |
| Dry weight | — | — |
| Origin | United States | Japan |
Choosing between Cummins L9G17 and Isuzu 6UZ1X
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 L9G17 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.