Peterbilt Caterpillar C15, Engine
| Engine capacity | 15,200 cm³ |
| Maximum power (range), hp | 355 - 600 |
| Maximum torque, N*m (kg*m) at rpm. | 2,779 (283) / 1200 |
| Fuel used | Diesel fuel |
| Engine type | In-line, 6-cylinder |
| Additional engine information | direct fuel injection |
| Maximum power, hp (kW) at rpm | 355 (261) / 2100 |
| Compression Ratio (Range) | 18 |
| Cylinder diameter (range), mm | 137.2 |
| Piston stroke (range), mm | 171.4 |
| Supercharger | Turbine |
| Number of valves per cylinder (range) | 4 |