Delphi ES20377 Oxygen Sensor - Rear, Rear Left or Rear Right

Delphi ES20377 Heated Oxygen Sensor Overview

The Delphi ES20377 is a heated oxygen sensor designed for precise emission control in select Jaguar and Volvo vehicles. Engineered with a 4-wire configuration and a square connector, this sensor ensures accurate readings and reliable performance for rear exhaust positions.

• Heated oxygen sensor with 4 wires for efficient operation
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified models
• Overall length of 905.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: rear, rear left, and rear right

Technical Details and Compatibility

The Delphi ES20377 oxygen sensor is engineered to meet the emission control requirements of various Jaguar and Volvo models, including the Jaguar XF, XFR, XJ, XK, XKR, and XKR-S, as well as Volvo S40, S60, S80, V50, V70, and XC90. Its heated sensor type allows for faster warm-up times, improving fuel efficiency and reducing emissions. The 4-wire design supports both sensor heating and signal transmission, while the square connector ensures a secure electrical connection. The 18 x 1.5 mm thread size and 905 mm overall length are tailored for rear exhaust system installation, ensuring proper fit and function.

Common Applications and Problem Resolution

• Helps maintain optimal air-fuel mixture for efficient combustion
• Reduces engine misfires and rough idling caused by faulty sensors
• Prevents increased emissions and failed emissions tests
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel economy by providing accurate exhaust gas readings

Installation Notes and Tips

When installing the Delphi ES20377 oxygen sensor, ensure the vehicle is compatible with the specified fitment models. The sensor is designed for rear, rear left, or rear right positions, so verify the correct location before installation. Use the included instruction sheet for guidance on torque specifications and connector engagement. It is recommended to inspect the wiring harness and exhaust threads for damage or corrosion prior to installation to ensure optimal sensor performance.

Quality Assurance and Warranty

Delphi manufactures the ES20377 oxygen sensor to meet OEM standards for durability and accuracy. The heated sensor design supports consistent operation under varying temperature conditions. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects. Refer to the product documentation for exact warranty terms.