NTK is the world's largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle's on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. While conventional switching oxygen sensors only switch rich or lean, wideband oxygen (or Air-Fuel Ratio) sensors produce a linear output signal that allows the ECU determine exactly how rich or lean an engine is running and make continuous and precise adjustments of the air-fuel mixture to stay closest to stoichiometric, providing the best possible combustion and fewest emissions. A ceramics company at our core, NTK uses state-of-the art technology enabling complete control of the ceramics used in our wideband oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology. NTK is constantly improving sensor designs to provide excellent performance and improve resistance to failure. NTK works with their OEM manufacturers through each phase of development from concept to production.

ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning

The NGK Audi A8 Quattro 2005-2007 Wideband Air-Fuel Ratio Sensor (Part #24311) is a high-performance OEM replacement designed to optimize your vehicle's engine operation. This sensor plays a critical role in the vehicle's on-board diagnostic system by providing precise, linear signals that enable the ECU to finely tune the air-fuel mixture for maximum efficiency and minimal emissions. Unlike traditional switching sensors, this wideband sensor allows for continuous adjustments, helping your engine run more efficiently and with lower harmful exhaust emissions.
Constructed with advanced ceramic sensor elements, the NGK sensor features a three-stage contaminant-resistant plasma jet and deposit trap overcoat, which protects against poisoning and prolongs sensor life. This technological innovation ensures reliable performance even in challenging operating conditions, reducing the frequency of replacements and maintenance. Designed specifically for the 2005-2007 Audi A8 Quattro models, this direct-fit sensor offers a straightforward installation process, restoring optimal engine performance and fuel economy.
Trust the NGK brand for quality and durability, backed by extensive OE application support. Whether you're performing maintenance or restoring your vehicle’s emissions system, this sensor provides the critical accuracy needed for emissions compliance and engine efficiency. Proper installation and use of this sensor help ensure your vehicle adheres to environmental standards while delivering smooth, responsive driving experience.

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