Delphi ES20177 Oxygen Sensor - Rear, Rear Left or Rear Right

Delphi ES20177 Heated Oxygen Sensor Overview

The Delphi ES20177 is a heated oxygen sensor designed for precise emission control in select Audi and Volkswagen models. Engineered with a flat connector and four wires, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated sensor type for faster response times
• Four-wire design for reliable signal transmission
• Flat connector shape for secure and easy installation
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Overall length of 1500 mm for proper fitment
• Includes oxygen sensor and instruction sheet
• Position-specific fitment: rear, rear left, rear right

Detailed Description of the Delphi ES20177 Oxygen Sensor

The Delphi ES20177 oxygen sensor is engineered to meet the emission control requirements of various Audi and Volkswagen vehicles, including the Audi A8 Quattro and Volkswagen Golf, Jetta, Passat, Phaeton, R32, and Touareg. Its heated sensor design allows the unit to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance under varying engine conditions. The flat connector shape facilitates a secure electrical connection, while the 18 x 1.5 mm thread size matches OEM specifications for straightforward installation. With an overall length of 1500 mm, this sensor fits the rear positions of the exhaust system, including rear left and rear right locations, depending on vehicle-specific requirements.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensors
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate sensor data
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

• Ensure vehicle compatibility with Audi and Volkswagen models listed
• Locate the sensor position: rear, rear left, or rear right as specified
• Use proper tools to avoid damaging the 18 x 1.5 mm threaded sensor
• Follow the included instruction sheet for wiring and installation guidance
• Verify electrical connections with the flat connector for secure fit

Quality Assurance and Warranty Information

Delphi manufactures the ES20177 oxygen sensor to meet strict OEM standards for durability and performance. Each sensor undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product quality.