Delphi ES20143 Oxygen Sensor - Rear

Overview of Delphi ES20143 Heated Oxygen Sensor

The Delphi ES20143 is a heated oxygen sensor designed for precise emission control in select Mercury and Nissan vehicles. Engineered to meet OEM specifications, this sensor ensures accurate air-fuel mixture readings for optimal engine performance and reduced emissions.

• Heated oxygen sensor with 4-wire design for reliable operation
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with rear sensor locations
• Overall length of 1290 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance

Detailed Product Description

The Delphi ES20143 oxygen sensor is a heated type sensor featuring a 4-wire configuration that allows for faster warm-up times and improved sensor response. Its square connector shape ensures a secure electrical connection, minimizing the risk of signal loss or corrosion. The sensor’s thread size of 18 x 1.5 mm is designed specifically for rear position installation, making it compatible with the exhaust systems of Mercury Quest and Nissan Villager models. With an overall length of 1290 mm, this sensor fits precisely to maintain accurate exhaust gas readings.

Compatible Vehicles and Applications

This oxygen sensor is compatible with the following vehicles:

• Mercury Quest (rear oxygen sensor)
• Nissan Villager (rear oxygen sensor)

Common Issues Addressed by the Delphi ES20143 Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor degradation
• Engine performance issues related to exhaust gas monitoring
• Failed emissions tests linked to sensor malfunction

Installation Notes and Tips

When installing the Delphi ES20143 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the included instruction sheet for proper wiring and torque specifications. Verify the square connector aligns correctly to prevent electrical issues. It is recommended to inspect the exhaust system for leaks before installation to ensure accurate sensor readings.

Quality Assurance and Warranty

Delphi manufactures the ES20143 oxygen sensor to meet strict quality standards, ensuring durability and reliable performance. This sensor is backed by Delphi’s warranty coverage, providing confidence in its long-term functionality when installed according to manufacturer guidelines.