NGK Audi A8 Quattro 2009-2008 Direct Fit 5-Wire Wideband A/F Sensor

This NGK 5-wire wideband Air-Fuel Ratio (A/F) sensor is designed to help your vehicle's computer (ECU) make precise adjustments to the air-fuel mixture. It fits a range of vehicles, including many Audi A8 Quattro, Porsche Cayenne, and Volkswagen Touareg models. Unlike older switching sensors that just tell the ECU if the mix is rich or lean, this wideband sensor gives a linear output. This means the ECU knows exactly how rich or lean the mixture is, allowing it to keep combustion as close to ideal as possible. This not only helps your engine run at its best but also improves fuel efficiency and reduces harmful emissions.

NGK, a major supplier of original equipment sensors, builds these units with an advanced ceramic sensor element. This element features a special overcoat that acts as a deposit trap and is resistant to contaminants, helping to prevent poisoning and ensuring the sensor works correctly for longer. Because NTK controls the ceramic material from start to finish, they can ensure a high level of performance and reliability. This sensor is a direct fit, meaning it's made to install without modification on the compatible vehicles.