Delphi ES11071 Oxygen Sensor - Rear

Delphi ES11071 Heated Oxygen Sensor Overview

The Delphi ES11071 is a heated oxygen sensor designed for rear position installation on select Hyundai and Kia vehicles. Engineered to provide accurate emissions data, this sensor supports optimal engine performance and helps maintain compliance with emission standards.

• Heated sensor type for faster response times
• 4-wire design ensuring reliable electrical connections
• Square connector shape for secure fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

This Delphi oxygen sensor (part number ES11071) features a heated element that allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. Its square connector shape and 18 x 1.5 mm thread size are designed to fit the rear exhaust position on Hyundai Optima, Sonata, and Kia Rondo models. This precise fitment helps maintain accurate air-fuel ratio readings critical for engine management systems.

Applications and Problem Resolution

The Delphi ES11071 oxygen sensor is used to monitor exhaust gases and provide feedback to the engine control unit (ECU). It helps address issues such as:

• Inaccurate air-fuel mixture readings causing poor fuel economy
• Increased emissions due to faulty sensor signals
• Check engine light triggered by oxygen sensor faults
• Engine performance problems related to exhaust gas monitoring

Installation Notes and Tips

When installing the Delphi ES11071 oxygen sensor, ensure the vehicle is compatible with this part number and position. Use proper tools to avoid damaging the sensor or threads. Follow the included instruction sheet carefully for wiring and torque specifications. It is recommended to disconnect the battery before installation to prevent electrical issues.

Quality Assurance and Warranty

Delphi manufactures the ES11071 oxygen sensor to meet OEM standards for durability and performance. This sensor undergoes rigorous testing to ensure reliable operation under various driving conditions. Warranty coverage details should be confirmed at the point of purchase, as they may vary by distributor.