2016 Cummins ISB, School Bus, Engine Assys, Fits to: Thomas Built Saf-T-Liner HDX, (Used) 2015 Cummins ISB, ENGINE ASSEMBLY- Serial Number: 73833485, CPL 4516 Displacement: 6.7L, Horsepower: 200, Reference images for condition. For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921, Horse Power 200, Serial# 73833485, Casting# 73833485 1T7Y44D25G1095236