Delphi ES20202 Oxygen Sensor - Rear

Delphi ES20202 Heated Oxygen Sensor Overview

The Delphi ES20202 is a heated oxygen sensor designed for precise emission control in select Lexus and Toyota vehicles. Engineered to meet OEM specifications, this sensor ensures accurate air-fuel mixture readings for optimal engine performance and reduced emissions.

• Heated sensor type for faster warm-up and improved efficiency
• 4-wire design for reliable electrical connections
• Square connector shape for secure fitment
• Thread size of 18 x 1.5 mm compatible with specified models
• Overall length of 510.0 mm for proper installation
• Positioned for rear placement in the exhaust system
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

The Delphi ES20202 oxygen sensor features a heated element that allows the sensor to reach operating temperature quickly, improving emission control accuracy shortly after engine start. Its 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape and 18 x 1.5 mm thread size are designed to fit securely in the rear exhaust position of compatible vehicles. This sensor is specifically compatible with Lexus Highlander, Toyota Highlander, Toyota RX300, and Toyota Supra models, providing a direct replacement that meets factory standards.

Applications and Problem Resolution

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces exhaust emissions by providing accurate oxygen level data
• Prevents engine performance issues related to faulty sensors
• Addresses check engine light triggers caused by oxygen sensor faults
• Improves fuel economy by enabling precise engine management

Installation Notes and Tips

When installing the Delphi ES20202 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the included instruction sheet for proper wiring and torque specifications. Verify the sensor’s rear exhaust position and connector compatibility before installation. It is recommended to use anti-seize compound on the threads to facilitate future removal. Proper installation will help maintain sensor accuracy and longevity.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet stringent quality standards and OEM specifications. The ES20202 part number undergoes rigorous testing to ensure durability and reliable performance in emission control systems. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product reliability.