(Used) 2006 Cummins ISB, ENGINE ASSEMBLY- Serial Number: 3017534, Part Number: 3944124, Family Number: DR1581-RX, Horsepower: 185, ESN: 60258256, CPL: 2687, Engine: P-27221, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921