How many miles is a 1994 n14 cummins good for before needing a rebuild?

A 1994 Cummins N14 engine can typically last between 500,000 to 1,000,000 miles before needing a rebuild, depending on factors such as maintenance, driving conditions, and load. Regular oil changes, proper cooling, and adherence to service intervals can significantly extend its lifespan. However, individual experiences may vary, and some engines may require attention sooner.