"Starting in 2019, the VM 3-liter V6 will have a new turbocharger with a low-friction bearing, low-friction pistons, a new injector nozzle, new piston bowl, and glow plugs with integrated combustion pressure sensors, to reduce emissions and increase efficiency."
https://www.allpar.com/mopar/V6/VM-RA-diesel.html
https://www.allpar.com/mopar/V6/VM-RA-diesel.html