Audi Oxygen O2 Sensor - Pre Cat Upstream 079906262Q

This authentic OEM Oxygen O2 Sensor - Pre Cat Upstream (Part Number 079906262Q) is designed for precise compatibility with select Audi models, including the 2011-2016 Audi RS5 and 2011-2012 Audi A8 Quattro, both equipped with the 4.2L V8 engine. Positioned upstream of the catalytic converter in the engine compartment, this sensor plays a critical role in measuring the oxygen levels in the exhaust gases, allowing the engine control unit to optimize air-fuel ratios for improved efficiency and emissions control. Common issues resolved by replacing a damaged or worn O2 sensor include poor fuel economy, rough idling, and increased emissions. This genuine part is sourced directly from salvage vehicles, ensuring its authenticity and factory specifications. Alternative terminologies include upstream oxygen sensor and front oxygen sensor, reinforcing its primary function within the vehicle’s exhaust system. For optimal performance, consider this essential replacement when tackling exhaust-related issues.