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 Porsche 911 2002-2005 Direct Fit Oxygen Sensor (Part Number 25701) is engineered to optimize your vehicle’s engine performance and emissions control. Designed specifically for Porsche 911 models from 2002 to 2005, this sensor plays a crucial role in maintaining the ideal air-fuel mixture by providing real-time feedback to the vehicle's ECU. Accurate data from the oxygen sensor ensures efficient combustion, leading to improved fuel economy and reduced harmful emissions, aligning with vehicle standards and environmental regulations.

Crafted with advanced ceramic sensor elements, the NGK sensor features a 3-stage contaminant-resistant plasma jet and deposit trap overcoat that safeguards against element poisoning. This innovative design enhances durability and resistance to contamination, ensuring consistent and reliable performance over time. The direct-fit design guarantees an easy installation process, allowing for a seamless replacement that restores optimal sensor function without the need for complex modifications.

Manufactured with precision and quality control, the NGK oxygen sensor is a trusted OEM replacement that meets or exceeds original equipment standards. It is suitable for use in vehicles equipped with on-board diagnostic systems and is compatible with various Porsche 911 models within the specified years. This sensor helps detect catalytic converter efficiency issues and fuel delivery problems early, supporting your vehicle’s health and environmental compliance. Whether you're performing routine maintenance or addressing a check engine light, this sensor ensures your Porsche maintains peak performance and emissions standards.

Features: