The NAVISTAR PDC Sensor, Renewed QLS Sensor 15.5 5012174R91 is a high-quality commercial truck part designed by NAVISTAR PDC. This sensor comes with a 6-month warranty and is sold as a single unit, making it a reliable and durable component for your vehicle. With the manufacturer part number 5012174R91, you can trust that this sensor is specifically designed to meet the needs of your commercial truck.