NGK Audi A6 2009-2006 Direct Fit 5-Wire Wideband A/F Sensor

This NGK 5-wire wideband air-fuel ratio (A/F) sensor uses an advanced ceramic element with a 3-stage contaminant-resistant plasma jet and deposit trap overcoat. This design helps protect the sensor from poisoning, which is crucial for maintaining optimal engine performance, maximizing fuel efficiency, and reducing harmful emissions. Unlike standard oxygen sensors that only switch between rich and lean signals, this wideband sensor provides a linear output. This allows your vehicle's computer (ECU) to precisely determine the air-fuel mixture and make continuous adjustments to keep combustion closest to stoichiometric levels.

As the world's largest supplier of OEM oxygen sensors, NTK (NGK's technical division) brings OE application technology to this direct-fit replacement. They work with manufacturers from concept to production, ensuring the sensor is built to meet the specific needs of vehicles like the Audi A4, A6, A5, and Q5. The advanced ceramic technology used in its construction is a testament to their core expertise as a ceramics company, giving them complete control over the materials from raw form to the finished product.