The Upstream Nitrogen Oxide NOx Sensor is a key component for the 2013-2018 Dodge Ram 2500, 3500, 4500, and 5500 trucks. This sensor, with the OE/OEM Part Number 68210084AA and Manufacturer Part Number 4326873, is designed for easy installation and is a single sensor type. It is specifically an Upstream NOX Sensor, providing accurate readings for the nitrogen oxide levels in the vehicle's emissions system. Ideal for ensuring proper functionality and reducing harmful emissions, this sensor is a reliable choice for maintenance and repair of these specific truck models.