Delphi ES20184 Oxygen Sensor - Rear

Delphi Heated Oxygen Sensor for Mercury Quest and Nissan Villager

The Delphi ES20184 oxygen sensor is designed to provide accurate emissions control for select Mercury and Nissan vehicles. This heated oxygen sensor features a 4-wire design and a square connector shape, ensuring reliable performance and compatibility with rear exhaust positions.

Key Features of Delphi ES20184 Oxygen Sensor

• Heated sensor type for faster warm-up and improved efficiency
• 4-wire configuration for precise signal transmission
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Overall length of 670 mm suitable for rear position installation
• Includes oxygen sensor and instruction sheet for reference

Detailed Description of the Delphi ES20184 Oxygen Sensor

The Delphi ES20184 oxygen sensor is engineered to meet the emission control requirements of Mercury Quest and Nissan Villager models. Its heated sensor design allows the unit to reach optimal operating temperature quickly, reducing emissions during cold starts. The 4-wire setup supports both the sensor signal and heater circuit, enhancing responsiveness and durability. The square connector shape ensures a secure electrical connection, minimizing the risk of disconnection or signal loss. With a thread size of 18 x 1.5 mm and an overall length of 670 mm, this sensor is specifically designed for rear exhaust placement, maintaining proper fitment and function.

Common Applications and Issues Addressed

• Helps regulate air-fuel mixture for improved engine performance
• Reduces harmful emissions by providing accurate oxygen level data
• Addresses rough idling caused by faulty oxygen sensors
• Prevents check engine light triggers related to exhaust sensor faults
• Improves fuel economy by ensuring proper combustion efficiency

Installation Notes and Tips

When installing the Delphi ES20184 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the correct 18 x 1.5 mm thread size to avoid cross-threading. Confirm the sensor is installed in the rear exhaust position as specified for Mercury Quest and Nissan Villager models. Connect the 4-wire harness securely to the square connector to maintain proper electrical contact. Refer to the included instruction sheet for detailed installation guidance.

Quality Assurance and Warranty Information

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20184 part number undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details are not provided here, Delphi products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or authorized sources for exact warranty terms.