Cummins 4B3.9-G12 Diesel Engine for Generator Set General data of Cummins 4B3.9-G12 Diesel Engine for Generator Set Engine Model Cummins 4B3.9-G12 Type 4 cylinder in line Displacement 3.9 L Bore&Stroke 102×120 mm Dry Weight 308 KG Dimension(L*W*H) 867*544*998mm Center of gravity from front face of block 373 mm Center of …