The QST30-G2 is a 31 L 12-cylinder turbocharged - aftercooled engine rated at 1800 rpm. It powers generator sets from Katolight, including the D800FJZ4, D800FNZ4, D800FPZ4 and D800FRZ4. It holds 41 L (10.8 gal) of oil and 85 L (22.5 gal) of coolant.
| Oil capacity | 41.0 L |
|---|---|
| Coolant capacity | 85.0 L |
| Displacement | 31.0 L |
| Cylinders | 12 |
| Aspiration | Turbocharged - Aftercooled |
| Rated speed | 1800 rpm |