Delphi ES20025 Oxygen Sensor - Front

Delphi ES20025 Heated Oxygen Sensor Overview

The Delphi ES20025 is a heated oxygen sensor designed for precise emission control in select Ford and Mercury vehicles. Engineered to meet OEM specifications, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated sensor type for faster warm-up and improved efficiency
• 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 models
• Overall length of 375.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Positioned for front placement in the exhaust system

Detailed Product Description

The Delphi ES20025 oxygen sensor is a heated sensor featuring a four-wire configuration that supports quicker sensor activation and stable voltage output. Its square connector shape ensures a secure connection, reducing the risk of electrical issues. The sensor’s thread size of 18 x 1.5 mm and overall length of 375.0 mm are designed to fit precisely in the front position of the exhaust system on compatible vehicles. This sensor is compatible with Ford Contour, Mercury Cougar, and Mercury Mystique models, providing accurate oxygen level readings to the engine control unit (ECU) for efficient fuel management and emission control.

Compatible Vehicles and Applications

• Ford Contour
• Mercury Cougar
• Mercury Mystique

Use of the Delphi ES20025 oxygen sensor helps address common issues such as:

• Erratic engine idling or stalling
• Increased fuel consumption
• Failed emissions tests
• Check engine light triggered by oxygen sensor faults
• Rough engine performance due to incorrect air-fuel mixture

Installation Notes and Tips

When installing the Delphi ES20025 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use the included instruction sheet for proper wiring and torque specifications. Verify the sensor’s square connector aligns correctly with the vehicle’s harness to prevent connection issues. It is recommended to inspect the exhaust threads and clean them before installation to ensure a proper seal.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The ES20025 part number undergoes rigorous testing to ensure durability and accurate performance under various operating conditions. Warranty coverage details should be confirmed with the point of purchase or Delphi’s official documentation.