It is designed for a 10-21 Cummins ISB 6.7 engine with 220 HP and interchange part numbers CM2250 and CPL3335. The computer module is built with a bolt-on mounting style and female connector. Made of steel and manufactured in the United States, this ECM ECU is a crucial component for controlling and managing the diesel engine performance in trucks and vehicles. Part is in good/used condition! Thank you and have a nice day!