In-line cylinders with four valves each, intercooled air turbocharging, and a common rail direct fuel injection system define the 3.9-liter Cummins B-series engine.

Economy is one of the motor’s primary benefits. The fuel distributor, exhaust after-treatment system, and injection system all guarantee full fuel combustion. This guarantees the need for these kinds of power plants. Even at low shaft speeds, power and torque can reach their maximum values.
Specifications
| Engine’s type | diesel |
| Power output, hp / kW | 150/110 at 2500 rpm |
| Displacement, cc | 3920 |
| Number of cylinders | 4 |
| Valves | 16 |
| Torque output, Nm / rpm | 1200 – 1700 |
| Compression ratio (compression) | 17.3:1 |
| Cylinder bore, mm | 102 |
| Piston stroke, mm | 120 |
| Crankshaft bearings | 5 |
| Configuration | inline |
| Fuel type | diesel |
| Fuel system | direct injection |
| Turbine | turbo / charge air cooler |
| Euro standards | Euro 3 |
| Cylinder head | OHV |
| Timing mechanism | spur gear |
| Timing | rocker arm |
| Cooling | water |
