2007-2011 Audi S6 Oxygen Sensor by NGK NTK oxygen sensors heat up rapidly to meet the requirements of the vehicle to improve fuel economy and reduce emissions. All NGK/NTK oxygen sensors have OEM specified connectors and attaching hardware for easy installation. Dual-coated platinum element increases longevity and ensures the quickest response time. Features High-Quality Construction Benefits Convenient Replacement for OE Parts Applications 2007-2011 Audi S6 What’s In The Box? 1 – Oxygen Sensors Warranty NGK’s Limited Manufacturer Warranty