Engineered for heavy-duty mountain transport and long-haul resource hauling, these engines feature large displacement and high-torque output, utilizing a compacted graphite iron (CGI) block and other robust structural designs to enhance durability under heavy loads; Equipped with an upgraded engine compression brake to handle long downhill descents and optimized high-thermal-efficiency combustion to reduce fuel consumption under heavy loads, these 13-14 L engines offer power outputs of 480-620 Ps and a maximum torque of up to 2,750 N·m, ensuring high power and safety.