Cummins Recon engine usually carry a 1 year 100,000 mile warranty regardless of engine model. You can then buy extended coverages to provide warranty up to about 5 years or 500,000 miles. These extended coverages will not cover maintanence items ie; fuel pump, turbo, waterpump, fan hub.
I believe this is the same with new engines also.
If you purchase a VP-44 over the counter, I THINK, it will be warranted for 6 months unlimited mileage. I THINK this applies to new or reman alike.
We really need to ask a Cummins Warranty Administrator.
What are you thinking about?