Delphi ES20226 Oxygen Sensor - Rear, Rear Left or Rear Right

Delphi Heated Oxygen Sensor for Lexus and Toyota Vehicles

The Delphi ES20226 oxygen sensor is designed to provide accurate emissions monitoring for select Lexus and Toyota models. This heated oxygen sensor ensures optimal engine performance and emissions control by delivering precise air-fuel mixture data to the vehicle’s engine control unit.

• Heated sensor type for faster activation 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 OEM specifications
• Overall length of 800 mm for proper installation
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: rear, rear left, and rear right

Technical Details and Compatibility

The Delphi ES20226 oxygen sensor features a heated element that allows the sensor to reach operating temperature quickly, reducing emissions during cold starts. Its 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape matches factory wiring harnesses for a secure and reliable connection. With a thread size of 18 x 1.5 mm and an overall length of 800 mm, this sensor fits precisely in the designated rear positions of compatible vehicles.

This oxygen sensor is compatible with various Lexus and Toyota models, including the Highlander, RX330, RX350, RX400h, and RX450h. It is designed to replace the rear oxygen sensors on the left or right side, depending on your vehicle’s specific requirements.

Common Applications and Problem Resolution

• Helps resolve check engine light issues related to oxygen sensor faults
• Improves fuel efficiency by providing accurate air-fuel ratio data
• Reduces harmful emissions by ensuring proper catalytic converter function
• Addresses rough idling or poor engine performance caused by faulty sensors
• Prevents failed emissions tests due to sensor malfunctions

Installation Notes and Tips

When installing the Delphi ES20226 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the included instruction sheet for guidance on sensor location and wiring connections. Apply anti-seize compound to the sensor threads if recommended by the vehicle manufacturer to facilitate future removal. Verify the sensor’s connector matches the factory harness before installation to avoid compatibility issues.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. The ES20226 part number undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to provide confidence in your purchase.