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 Chevrolet Tracker 2001-2003 Direct Fit Oxygen Sensor (Part Number 21525) is engineered to optimize your vehicle's engine performance and fuel efficiency. Designed with advanced ceramic sensor elements, this OEM-quality sensor features a 3-stage contaminant-resistant plasma jet and deposit trap overcoat that protects against element poisoning, ensuring long-lasting reliability. As a critical component of the vehicle's on-board diagnostic system, it provides real-time feedback to the ECU, aiding in precise air-fuel ratio control and helping to reduce emissions. Proper functioning of this sensor can enhance engine responsiveness and contribute to lower harmful exhaust gases.
This oxygen sensor is crafted by NGK, a trusted leader in automotive sensor technology, working closely with OEM manufacturers from concept to production. Its direct fit design guarantees seamless installation in compatible Chevrolet Tracker models from 2001 to 2003 and select Suzuki Vitara vehicles, ensuring a hassle-free upgrade or replacement. The sensor's durable construction and contaminant-resistant features make it well-suited for demanding driving conditions, helping to maintain optimal vehicle operation over time.
Constructed with quality materials and precision engineering, this sensor complies with Prop 65 regulations to ensure safety and environmental responsibility. It does not require special freight handling, making it suitable for standard shipping options. Trust NGK's expertise as the sensor specialist for reliable, high-performance automotive sensors that meet or exceed OE standards, providing peace of mind on every drive.

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