(Used) 2003 Cummins ISC 8.3, ENGINE ASSEMBLY- Serial Number: 6A04000503, Part Number: P3965953-NX, DC: 4212, Displacement: 8.3L, Horsepower: 275, Engine: P-41250, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921