The DELPHI NOx Sensor and NOx Catalyst (ANS1066-12B1) is a critical component for modern vehicle emission control systems. It plays a vital role in reducing harmful nitrogen oxide (NOx) emissions, ensuring your vehicle meets stringent environmental standards. This integrated unit combines the functions of a NOx sensor, which measures the levels of NOx in the exhaust stream, and a NOx catalyst, which chemically converts these harmful gases into less harmful substances like nitrogen and water. This dual functionality ensures efficient emission control and helps maintain optimal engine performance. Engineered by DELPHI, a trusted name in automotive technology, this part is built to exacting standards for durability and reliability. Its precise calibration ensures accurate readings and effective catalytic conversion, contributing to a cleaner exhaust and a healthier environment.