Delphi ES20420 Oxygen Sensor - Rear Left

Delphi Heated Oxygen Sensor for Lexus GS350, IS250, IS350

The Delphi ES20420 oxygen sensor is designed to provide accurate emissions data for select Lexus models. This heated sensor ensures quicker activation and reliable performance, helping maintain optimal engine efficiency and emissions control.

• Heated oxygen sensor type for faster response times
• Four-wire design for precise signal transmission
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified Lexus models
• Overall length of 1135.0 mm for correct installation
• Positioned for rear left placement on the exhaust system
• Includes oxygen sensor and instruction sheet for installation guidance

Product Details and Specifications

The Delphi ES20420 oxygen sensor is engineered to meet the specific requirements of Lexus GS350, IS250, and IS350 vehicles. Featuring a heated sensor element, it reaches operating temperature quickly, which improves fuel management and reduces emissions during cold starts. The four-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 provide a secure and direct fit in the rear left exhaust position, maintaining factory specifications. With an overall length of 1135.0 mm, this sensor fits precisely without modification.

Compatible Vehicles and Applications

• Compatible with Lexus GS350 models requiring rear left oxygen sensor replacement
• Suitable for Lexus IS250 vehicles needing a heated oxygen sensor with four wires
• Fits Lexus IS350 models with OEM thread size and connector specifications
• Designed for emission control sensor replacement in rear left exhaust position

Installation Notes and Tips

• Ensure the vehicle is cooled down before sensor removal to avoid burns
• Use appropriate tools to avoid damaging the sensor or exhaust threads
• Verify the connector shape matches the vehicle harness before installation
• Follow the included instruction sheet for proper torque specifications and wiring
• Check for any exhaust leaks after installation to maintain sensor accuracy

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20420 part number undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship. Refer to the product documentation for exact warranty terms.