2006 Caterpillar C7, School Bus, ECMs, Fits to: Thomas Built Saf-T-Liner HDX, 2006 Caterpillar C7. ECM. S/N-17256147E P/N-240-5302-01 HP-230 Engine Model-C7 CPL- PIN-70/70 For more information about this item call. We ship worldwide., Serial# SAP89767, Casting# SAP89767, Truck Year 2006 1T7YN4C2861274819