This is a new OEM Cummins ISX15 ECM ECU (part number 4993120RX) for CM2250 diesel engines. It features bolt-on mounting style, requires programming, has EEPROM memory, and comes with one ECM only. The material is aluminum with a metal surface finish, and it is designed for performance in the engine compartment. The connector type and terminal quantity are as shown in the pictures provided. Please confirm the part. Ecm has minor scratches.. Make sure program the ecm before installation with your engine serial no. Ecm fully tested, if any previous program installed for testing please delete it and install your program. With your engine serial no.