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. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our 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 Infiniti QX4 2001 Direct Fit Oxygen Sensor is designed to seamlessly replace your vehicle's original sensor, ensuring optimal engine performance and fuel efficiency. Built with advanced ceramic sensor elements, this OEM-quality sensor offers reliable, long-lasting operation. The 3-stage contaminant-resistant plasma jet and deposit trap overcoat provide superior protection against element poisoning, maintaining accurate air-fuel ratio feedback to your vehicle's ECU. This precise feedback helps reduce harmful emissions and ensures your vehicle operates efficiently under various driving conditions.
This oxygen sensor fits 2001 Nissan Pathfinder and Infiniti QX4 models, providing a straightforward installation process that restores your vehicle's diagnostic system accuracy. By maintaining proper air-fuel mixture control, it supports your vehicle's emissions compliance and engine responsiveness. Manufactured by NGK, a trusted brand in automotive sensor technology, this sensor is built to meet or exceed OE specifications, ensuring durability and consistent performance over time.
Designed for ease of installation and dependable operation, this sensor adheres to strict quality standards, making it an ideal choice for repairs and replacements. With a focus on resistance to failure and contamination, the NGK Infiniti QX4 2001 oxygen sensor is a reliable component that helps your vehicle run smoothly while minimizing emissions. Trust NGK's expertise and commitment to innovation for your automotive sensor needs.

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