2012 Cummins ISB 6.7, School Bus, Engine Assys, Fits to: Thomas Built Saf-T-Liner HDX, (Used) 2011 Cummins ISL, ENGINE ASSEMBLY- Family Number: BCEXH0408BAH, Displacement: 6.7 Horsepower: 220, Ar. No./ CPL: 3071, ESN: 73223517, Part Number: 155307, E.C.S: EGR, PTOX, SCRC, 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 220, Serial# 73223517, Casting# 73223517 1T7YN4E27C1146919