The Volvo 29 Inch Long Temperature Sensor is a reliable and efficient solution for maintaining proper ATS functionality without compromising fuel consumption. With its direct OE replacement number of 21164414, this sensor is easy to install and fits most Volvo makes and models. Tested and accredited by a third party, as well as at the Dinex Test Center, it ensures accurate exhaust emission control. Sold individually, this sensor is a practical choice that directly replaces OE sensors, making it an environmentally friendly option.