This emissions valve is a crucial part for your Ford Explorer 4.0L from 2004-2010. It is designed to regulate the flow of exhaust gases and ensure your vehicle meets emissions standards. With a part number of 4L2E9Y456H3A and 4L2Z9D475A, this high-quality valve will help your engine run smoothly and efficiently. It's a must-have for anyone looking to maintain their vehicle's performance and pass emissions tests.