Im selling a good used take off 2004 Caterpillar C7 ECM. The part number is hard to make out, but the best I can tell it is 239-8277-00. It came from a 2004 School bus I recently parted out. It was parked in May 2019 due to age. I drove the bus in over 70 miles and it had no issues whatsoever, had the Cat C7 Acert and was a 250Hp engine. It was in good working order when removed, shipping is free to the lower 48 United states. What you see in the pictures is what you get.