Cummins
QSB3.9-G2
QSB3.9 Series
This engine is no longer in production (discontinued 2026). Specifications and documentation remain archived for reference.
Power Ratings
kWm = mechanical power · kWe = electrical power (kWm × gen. eff.) · kVA = kWe ÷ 0.8 power factor
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 63 | 48 | 56 |
| Standby Power | 70 | 60 | 70 |
Technical Specifications
| Brand | Cummins |
| Model | QSB3.9-G2 |
| Series | QSB3.9 Series |
| Configuration | Inline 4 |
| Cylinders | 4 |
| Displacement | 3.9 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | China Nonroad Stage III |
| Country of Origin | China |
| Year Discontinued | 2026 |