Peterbilt Cummins ISX15 600, Engine
| Engine capacity | 14,945 cm³ |
| Maximum power (range), hp | 600 |
| Maximum torque, N*m (kg*m) at rpm. | 2,508 (256) / 1200 |
| Fuel used | Diesel fuel |
| Engine type | In-line, 6-cylinder |
| Maximum power, hp (kW) at rpm | 600 (441) / 1800 |
| Compression Ratio (Range) | 17 |
| Cylinder diameter (range), mm | 140 |
| Piston stroke (range), mm | 165 |
| Supercharger | Turbine |
| Number of valves per cylinder (range) | 4 |