Welcome to iRV2.
Sorry you're here with problems.
I worked at a Dodge dealer, for over 30 years and on Cummins for the last 14 years before I retired. Only dealt with two of the # 53 blocks, at that time both were over the 7/115,000 kms Dodge warranty and Cummins didn't get involved ,and I believe there is a " years " component to any Cummins involvement.
If you have the engine serial number you could call ; Cummins Care to be sure.