2011 Cummins ISL, School Bus, ECMs, Fits to: Thomas Built Saf-T-Liner HDX, (Used) 2011 Cummins ISL, ENGINE ECM- Part Number: P4993120, Serial Number: 1T2250A04002391, Family Number: ACEXH0408BAH, Displacement: 6.7L, Horsepower: 220, ESN: 73089709, Part Number: 5262981, CPL: 3071, E.C.S.: EGR, PTOX, SCRC, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Serial# 1T2250A04002381, Truck Year 2011, VIN 1T7YN4E24B1137948 1T7YN4E24B1137948