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 Astro 2000-2002 Direct Fit Oxygen Sensor Part Number 21516 is engineered to enhance your vehicle's engine performance and fuel efficiency. This OEM-quality sensor plays a vital role in your vehicle's on-board diagnostic system by providing accurate, real-time feedback to the engine control unit (ECU). With its advanced ceramic sensor element, it helps maintain the optimal air-fuel ratio, resulting in smoother acceleration, improved fuel economy, and reduced emissions. The sensor's design incorporates a 3-stage contaminant-resistant plasma jet and deposit trap overcoat, which offers superior protection against element poisoning and prolongs sensor life. This ensures reliable operation even in demanding driving conditions, making it a dependable replacement part for your vehicle.

Features:

OEM-Quality Design: Ensures reliable fit and function for your Chevrolet Astro and GMC Yukon models from 2000 to 2002.

Advanced Ceramic Sensor Element: Features a 3-stage contaminant-resistant plasma jet and deposit trap overcoat, protecting against poisoning and contamination.