The Cummins Heavy Duty NOx Sensor with Outlet Sensor is a practical and reliable solution for monitoring and reducing nitrogen oxide emissions in heavy-duty vehicles. Designed to fit most Detroit Diesel models, this sensor features an outlet sensor type and M20 by 1.5 thread size. With OEM and aftermarket numbers 2871974 and 2894943RX, this sensor ensures accurate and efficient NOx measurement. Improve your vehicle's environmental performance with this high-quality sensor, designed to meet industry standards and regulations.