Delphi ES20225 Oxygen Sensor - Front or Front Right

Delphi ES20225 Heated Oxygen Sensor Overview

The Delphi ES20225 oxygen sensor is designed for precise emission control in Mitsubishi vehicles, including the Lancer, Montero, and Montero Sport. This heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions compliance.

• Heated sensor type for faster warm-up and accurate readings
• Four-wire design for reliable signal transmission
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified Mitsubishi models
• Overall length of 755.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: front, front right, rear right

Detailed Product Description

The Delphi ES20225 oxygen sensor is engineered to meet the emission control requirements of Mitsubishi Lancer, Montero, and Montero Sport vehicles. Featuring a heated sensor element, it quickly reaches operating temperature to provide accurate oxygen level readings in the exhaust stream. The four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance under various driving conditions. The square connector shape and 18 x 1.5 mm thread size are designed for a secure and precise fit in the designated sensor locations, including front, front right, and rear right positions. With an overall length of 755.0 mm, this sensor fits correctly without modification, maintaining factory specifications.

Common Applications and Issues Addressed

• Helps resolve poor fuel economy caused by incorrect air-fuel mixture
• Reduces engine hesitation and rough idling related to faulty oxygen sensors
• Supports emission system compliance by providing accurate exhaust gas data
• Prevents check engine light triggers related to oxygen sensor faults
• Improves catalytic converter efficiency by maintaining proper sensor feedback

Installation Notes and Tips

• Ensure the sensor is installed in the correct position as specified for your Mitsubishi model
• Use proper torque settings to avoid damage to the sensor or exhaust components
• Disconnect the battery before installation to prevent electrical shorts
• Verify connector compatibility with the vehicle’s wiring harness
• Follow the included instruction sheet for detailed installation steps

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20225 part number undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product quality.