70 The product is a 2001 Nissan Pathfinder QX4 Engine Control Unit (ECU) with the part number MEC14-170. It is a plug and play unit that does not require any programming. The ECU is a direct replacement for Nissan and Infiniti vehicles, offering a manufacturer warranty of 60 days. Made in the United States, this ECU is a crucial component for controlling the engine functions of the vehicle, ensuring optimal performance and efficiency. It also includes a key, suggesting it may be part of the vehicle's anti-theft system.