Delphi ES20065 Oxygen Sensor - Front, Rear or Rear Right

Delphi ES20065 Heated Oxygen Sensor Overview

The Delphi ES20065 is a heated oxygen sensor designed for precise emission control in select Kia and Mazda vehicles. Engineered to provide accurate air-fuel mixture readings, this sensor supports optimal engine performance and reduced emissions.

• Heated sensor type for faster warm-up and improved efficiency
• 4-wire design ensuring reliable electrical connections
• Square connector shape for secure fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicle models
• Overall length of 810.0 mm for proper installation
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: front, rear, and rear right locations depending on vehicle

Technical Details and Compatibility

The Delphi ES20065 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving sensor response time and fuel management accuracy. Its 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape and 18 x 1.5 mm thread size are designed to match OEM specifications for a secure and leak-free installation. With an overall length of 810 mm, this sensor fits precisely in the designated mounting points on compatible vehicles.

This oxygen sensor is compatible with various Kia and Mazda models, including the Mazda Miata, Millenia, Protege, and Sephia. The sensor’s position-specific design accommodates front, rear, and rear right locations, depending on the vehicle’s emission system requirements.

Common Applications and Problem Resolution

• Helps correct inaccurate air-fuel ratio readings that cause poor fuel economy
• Addresses engine performance issues related to faulty oxygen sensors
• Reduces emissions by providing accurate feedback to the engine control unit
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine idling and acceleration by maintaining proper combustion

Installation Notes and Tips

• Ensure the vehicle is compatible with the Delphi ES20065 part number before installation
• Locate the sensor position (front, rear, or rear right) as specified for your vehicle model
• Use proper tools to avoid damaging the 18 x 1.5 mm threaded fitting
• Follow the included instruction sheet carefully for wiring and connector alignment
• Verify sensor operation after installation by checking for error codes or engine performance

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. The ES20065 undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to provide confidence in product quality.