The Cummins 21.25 Inch Long Temperature Sensor is a reliable and efficient solution for maintaining proper ATS functionality without compromising fuel consumption. This sensor, sold individually, is a direct replacement for OE sensors and fits most Cummins makes and models. Tested and accredited by a third party, as well as at the Dinex Test Center, it ensures accurate temperature readings. With a length of 21.25 inches and dimensions of 1.56 inches wide and tall, it is easy to install. This sensor also meets EPA 10 exhaust emission norms, making it an environmentally friendly choice. Direct OE replacement numbers include 2596654C1, 4705559, and 4954574.