Cummins 4B3.9-G11 vs Lister Petter SA427G1
The Cummins 4B3.9-G11 and Lister Petter SA427G1 are both diesel generator engines in a similar power class. The Cummins 4B3.9-G11 is the higher-output unit (25 kVA vs 23 kVA). The table below compares their full specifications side by side.
| Specification | Cummins 4B3.9-G11 | Lister Petter SA427G1 |
|---|---|---|
| Headline rating | 25 kVA | 23 kVA |
| Standby (50 Hz) | 20 kWe | 19 kWe |
| Prime (50 Hz) | 17 kWe | 17 kWe |
| Standby (60 Hz) | 25 kWe | 22 kWe |
| Prime (60 Hz) | 20 kWe | 20 kWe |
| Displacement | 3.9 L | — |
| Configuration | L4 | — |
| Cylinders | 4 | — |
| Rated speed | 1,500 / 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | — |
| Emissions | Unregulated | Euro Stage II |
| Dry weight | — | — |
| Origin | China | United Kingdom |