Delphi ES20174 Oxygen Sensor

Delphi ES20174 Heated Oxygen Sensor Overview

The Delphi ES20174 is a heated oxygen sensor designed for precise emission control in select Mercedes-Benz models. Engineered with a 4-wire configuration and a round connector, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated oxygen sensor with 4 wires for fast response
• Round connector shape for secure and reliable connection
• Thread size of 18 x 1.5 mm for direct fitment
• Overall length of 900 mm to accommodate various installation positions
• Includes oxygen sensor and instruction sheet for installation guidance
• Compatible with front and rear positions including front left, front right, rear left

Technical Details and Compatibility

The Delphi ES20174 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving sensor response time and reducing emissions during cold starts. The 4-wire design supports both the sensor signal and heater circuit, ensuring consistent performance. Its round connector and standard 18 x 1.5 mm thread size provide a secure fit in the exhaust system. With an overall length of 900 mm, this sensor is suitable for multiple mounting locations including front, front left, front right, rear, and rear left positions.

This oxygen sensor is compatible with a range of Mercedes-Benz vehicles such as the C32 AMG, C55 AMG, C230, C240, C280, C320, C350, CLK55 AMG, CLK320, CLK430, CLK500, E55 AMG, E320, E430, E500, G55 AMG, G500, ML500, R500, and SLK55 AMG models. The part number ES20174 ensures you receive the correct sensor for these specific applications.

Common Applications and Problem Resolution

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensor readings
• Improves fuel economy by providing accurate feedback to the engine control unit
• Prevents increased emissions and failed emissions tests
• Addresses rough idling and poor acceleration linked to sensor failure

Installation Notes and Tips

When installing the Delphi ES20174 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use the included instruction sheet for proper wiring and positioning guidance. Apply anti-seize compound to the sensor threads if recommended, but avoid contaminating the sensor tip. Verify the connector is securely attached to prevent signal interruptions. Proper torque on the 18 x 1.5 mm threads is essential to avoid exhaust leaks.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM specifications for durability and performance. The ES20174 part number undergoes rigorous testing to ensure reliable operation under various driving conditions. This sensor typically comes with a limited warranty covering defects in materials and workmanship, providing confidence in its long-term functionality.