The Cummins 21 Inch Long Temperature Sensor is a reliable and efficient solution for maintaining proper ATS functionality without compromising fuel consumption. This sensor, which is 21 inches long, 1.56 inches wide, and 1.56 inches tall, is designed to directly replace OE sensors and fits most Cummins makes and models. It has been tested and accredited by a third party and is sold individually. With direct OE replacement numbers of 1804905, 1831943, 1897229PE, 2872467, 2897539, and 4984178, this sensor is easy to install and ensures optimal performance. Its exhaust emission norm of EPA 10 also makes it an environmentally friendly choice.