18 400–405 kw diesel generator models side by side — power, phase, sound level, weight and fuel tank capacity, compiled from manufacturer specification sheets.
| Model | Standby | Phase | Sound | Weight | Fuel tank |
|---|---|---|---|---|---|
| Kohler 400REOZJ | 400.0 kW | 3 | — | — | — |
| Generac MD400 | 400.0 kW | 3-phase | — | 3016.0 kg | — |
| Kohler 400REOZJD | 400.0 kW | 3 | — | — | — |
| Kohler 400REOZJB | 400.0 kW | 3 | — | — | — |
| MTU 6R0225 DS400 | 400.0 kW | 3 | 89.2 dBA | 3464.0 kg | — |
| Caterpillar 3406 | 400.0 kW | 3 | — | 1470.0 kg | — |
| AKSA APD-ULV400 | 400.0 kW | 3PH | 76.0 dBA | — | — |
| Hipower HMW 405 T6U | 400.0 kW | 3 | 73.0 dBA | 5342.0 kg | 740.0 L |
| AKSA AD400 | 400.0 kW | 3 | 65.0 dBA | 2200.0 kg | 100.0 L |
| AKSA APD-ULJ400 | 400.0 kW | 3PH | — | — | — |
| AKSA APD-ULP400 | 400.0 kW | 3PH | — | — | — |
| Cummins/Onan DFN 400 kw | 400.0 kW | — | — | — | — |
| Volvo Penta BCV 500-50 E2 | 400.0 kW | 3 | — | — | 755.0 L |
| Cummins/Onan BCC 500-50 E2 | 400.0 kW | 3 | — | — | 760.0 L |
| MTU BCMU 500S-50 | 400.0 kW | 3 | — | — | 710.0 L |
| SDMO GS400UC | 400.0 kW | — | — | — | — |
| Kohler 400REZK | 400.0 kW | — | — | — | — |
| Atlas Copco QES 450 | 402.0 kW | — | 77.0 dBA | 4391.0 kg | 605.0 L |
Among 400–405 kW Diesel generators in this comparison, the AKSA AD400 is quietest at 65.0 dBA.
Among 400–405 kW Diesel generators in this comparison, the Caterpillar 3406 is lightest at 1470.0 kg dry weight.
Among 400–405 kW Diesel generators in this comparison, the Cummins/Onan BCC 500-50 E2 has the largest fuel tank at 760.0 L.
Not every model reports every spec — blanks mean the source document didn't state that figure, not that the value is zero.