I was using information from my son and from Cummins. It is my understanding this is a new engine that also has a commercial version still under final testing and development. Both GM and Chrysler were looking at this engine before the automotive collapse so it fell near dead in its development until Nissan started looking at it. My son is a powertrain engineer at Chrysler currently assigned to the diesel programs. Here is the Cummins' release;
Cummins Engines This press release and this one (
NEW CUMMINS 5.0L V8 TURBO DIESEL BRINGS MANUFACTURING BACK TO DOWNTOWN COLUMBUS - Cummins Engines) seem to support what my son told me.
Both Cummins and Aisin provide outstanding commercial quality products but when profits drive a company and there is rush to market, mistakes can happen. The eight speed transmission RAM uses is a proven transmission used in luxury vehicle since 2008. At first RAM use it was running good until Chrysler decided to take over the transmission calibrations. This kind of stuff happens and is no reflection back to the supplier but to the integrator of the product. This is why I say unproven, I'm not concerned about the product (Cummins and Aisan) as much as the integration (Nissan).
My son did tell me Cummins will handle the warranty work (if any) on the engine, how the logistics work I don't know.