Cummins B6.7G18 vs SDEC 6HTAA6.5-G34
The Cummins B6.7G18 and SDEC 6HTAA6.5-G34 are both diesel generator engines in a similar power class. Both are rated at roughly 233 kVA. Displacement is 6.7 L versus 6.5 L. The table below compares their full specifications side by side.
| Specification | Cummins B6.7G18 | SDEC 6HTAA6.5-G34 |
|---|---|---|
| Headline rating | 235 kVA | 231 kVA |
| Standby (50 Hz) | 188 kWe | 185 kWe |
| Prime (50 Hz) | 172 kWe | 167 kWe |
| Standby (60 Hz) | 205 kWe | — |
| Prime (60 Hz) | 188 kWe | — |
| Displacement | 6.7 L | 6.5 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Final Tier 4 / EU Stage V | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | United States / United Kingdom | China |
Choosing between Cummins B6.7G18 and SDEC 6HTAA6.5-G34
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 B6.7G18 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.