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 Hyundai Sonata 2011 Direct Fit Oxygen Sensor (Part Number 25201) is designed to ensure optimal engine performance and emissions compliance. As a critical component of your vehicle's on-board diagnostic system, this oxygen sensor provides precise feedback to the ECU to maintain the ideal air-fuel ratio. This results in improved fuel efficiency and reduced harmful emissions, supporting your vehicle’s environmental and performance standards. Crafted with advanced ceramic sensor technology, the sensor features a contaminant-resistant plasma jet and deposit trap overcoat that protects against element poisoning, ensuring longer-lasting reliable operation. This makes it a dependable replacement for your vehicle's original sensor, helping to maintain smooth engine operation and prevent costly repairs. The sensor’s direct-fit design simplifies installation, making it suitable for compatible 2011-2013 Hyundai Sonata and Kia Optima models. Trust NGK’s expertise in OEM-quality sensors to deliver consistent performance and durability, backed by years of experience in sensor manufacturing. The sensor complies with Prop 65 regulations and is produced with high-quality materials to meet strict automotive standards. Whether you're restoring your vehicle or replacing a faulty sensor, the NGK Hyundai Sonata 2011 Oxygen Sensor is engineered to keep your vehicle running efficiently and cleanly. Proper installation and use of this sensor will help your vehicle pass emissions tests and maintain optimal fuel economy, contributing to a healthier environment and better driving experience.

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