CUMMINS KTA38: AS THE OLD DIESEL ENGINE, WHY IT IS STILL IRREPLACEABLE?

When people think of diesel engines, most of them will associate them with "bulky", "high emission" or "will be eliminated by electrification".However, Cummins' classic KTA38 model has continued to be active in many harsh scenarios around the world, and has even become the "invisible champion" in certain fields.Where does its vitality come from?