The Cummins 31.30 Inch Long NOx Sensor OE 2894941 And 3687334 is a reliable and efficient solution for managing exhaust emissions. With dimensions of 31.30 inches long, 1.63 inches tall, and 2.56 inches wide, it meets EPA 10 standards for exhaust emissions. This sensor is sold individually and can be easily replaced with OE sensors. It has been rigorously tested at the Dinex Test Center and accredited by a third party. With a focus on emission control and urea consumption, it strikes a cost-effective balance. Installation is a breeze, and it fits most Cummins models. Direct OE replacement numbers are 2894941 and 3687334.