This Bosch 15124 Premium O2 Sensor is a brand new, genuine product made in the USA. It is designed to measure the amount of oxygen in the exhaust gas of your vehicle, helping to ensure that your engine is running efficiently and producing clean emissions. The sensor is made by Bosch, a trusted name in automotive parts and accessories, and is specifically designed for use in exhaust and emission systems. With its high-quality construction and precise measurements, this oxygen sensor is an excellent choice for anyone looking to maintain the performance and health of their vehicle's engine.