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 Peugeot 405 1989-1991 Direct Fit Oxygen Sensor (Part Number 25531) is engineered to ensure your vehicle maintains optimal engine performance and fuel efficiency. Designed with advanced ceramic sensor elements, this oxygen sensor features a 3-stage contaminant-resistant plasma jet and deposit trap overcoat, which effectively protects against element poisoning and prolongs sensor life. This technology helps your vehicle's onboard diagnostic system accurately monitor and control the air-fuel mixture, reducing harmful emissions and supporting catalytic converter efficiency.
The sensor's precision design ensures seamless integration with your Peugeot 405, providing reliable feedback to the engine control unit (ECU) for smooth operation. Manufactured by NGK, a trusted leader in automotive sensors, this oxygen sensor is built to meet or exceed OEM specifications, ensuring a perfect fit and dependable performance. Whether you're performing routine maintenance or addressing specific engine issues, this sensor offers a durable and efficient solution to keep your vehicle running at its best.
The NGK oxygen sensor complies with Prop 65 standards, highlighting its safety and environmental responsibility. Easy to install, it is suitable for vehicles from 1989 through 1991 Peugeot 405 models, providing the necessary compatibility and performance for your specific application. Trust NGK for high-quality sensors designed for long-lasting durability and precise engine management.

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