The product is a 1999 Jeep Grand Cherokee ECM engine computer with the manufacturer part number 56041424AE. This performance part is designed specifically for vehicles, providing enhanced functionality and improved performance. As an essential component of the vehicle's electrical system, this ECM will ensure efficient and reliable operation of the engine, making it a crucial component for any Jeep Grand Cherokee owner looking to upgrade their vehicle's performance. The item is used in good working condition. Please match the part numbers. No returns. It may need to be programmed. Thank you.