The Oxygen Sensor by Walker Products (Part Number: 350-34399) comes with a 1-year warranty and is designed to accurately detect the oxygen level in your vehicle's exhaust system. Made by the reliable brand Walker Products, this sensor helps to ensure optimal engine performance and efficient emission control. The product may contain materials known to the State of California to cause cancer or birth defects. It is essential for maintaining your vehicle's exhaust system and adhering to emission regulations.