The higherbro 4X Oxygen Sensor is designed for use in various Chrysler, Dodge, Jeep, Ram, and Volkswagen models, including the 300, Magnum, Commander, Grand Cherokee, Liberty, Nitro, Avenger, Challenger, Charger, Durango, Grand Caravan, Journey, Ram 1500, and Routan. This set includes 4 oxygen sensors, specifically 2 upstream and 2 downstream sensors, made of high-quality Stainless Steel and Aluminum Oxide. The sensors are built for Flange Mount installation and have a maximum temperature rating of 800 degrees Celsius. The higherbro 4X Oxygen Sensor is backed by a one-year quality guarantee, ensuring customer satisfaction. Before purchasing, it is recommended to check the vehicle compatibility using the 'Select Your Vehicle' feature at the top of the product page.