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 Subaru Impreza 2001-1999 Wideband Air-Fuel Ratio Sensor (Part #24667) is engineered to deliver precise engine management and optimize fuel efficiency. As part of NGK's commitment to quality and performance, this sensor features an advanced ceramic sensing element that utilizes a 3-stage contaminant-resistant plasma jet and deposit trap overcoat, providing enhanced durability against poisoning and contaminants. This technology ensures the sensor maintains accurate readings over a longer lifespan, supporting your vehicle's emissions compliance and overall engine health.
This wideband oxygen sensor plays a vital role in the vehicle’s on-board diagnostic system by producing a linear output signal, allowing the engine control unit (ECU) to accurately monitor and adjust the air-fuel mixture in real time. Unlike conventional sensors that only switch between rich and lean states, this sensor provides continuous and precise data, enabling optimal combustion and reducing harmful emissions. It is designed specifically to fit Subaru Impreza models from 1999 to 2001, ensuring a straightforward installation and perfect compatibility.
Constructed with high-quality materials and cutting-edge ceramic technologies, the NGK sensor is a reliable choice for maintaining engine performance and fuel economy. Its robust design is resistant to contamination and failure, making it suitable for demanding driving conditions. Trust NGK, a leading manufacturer in OEM sensor technology, to deliver a component that supports your vehicle’s emission control system while providing efficient and consistent performance. This sensor is essential for those seeking to uphold environmental standards and ensure their Subaru Impreza operates at its best.

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