Delphi ES20407 Oxygen Sensor - Rear, Rear Left or Rear Right

Delphi ES20407 Heated Oxygen Sensor Overview

The Delphi ES20407 is a heated oxygen sensor designed for precise emission control in select Ford, Lincoln, and Mercury vehicles. This sensor helps maintain optimal engine performance and reduces harmful emissions by accurately monitoring oxygen levels in the exhaust system.

• Heated sensor type for faster warm-up and improved accuracy
• Four-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 475.0 mm for proper installation
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: rear, rear left, and rear right locations

Detailed Product Description

The Delphi ES20407 oxygen sensor is engineered to meet the emission control requirements of various Ford, Lincoln, and Mercury models, including the Escape, Explorer, F-150, Flex, Fusion, Mariner, Milan, MKS, MKT, MKZ, Mustang, and Taurus. Its heated sensor design allows the unit to reach operating temperature quickly, improving sensor response time and fuel efficiency. The four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance under varying engine conditions. The square connector shape and 18 x 1.5 mm thread size provide a secure and precise fit, while the 475 mm overall length accommodates the specific rear positions in the exhaust system. This oxygen sensor is supplied with an instruction sheet to assist with proper installation.

Common Applications and Issues Addressed

• Helps resolve poor fuel economy caused by incorrect air-fuel mixture readings
• Reduces engine hesitation and rough idling linked to faulty oxygen sensors
• Assists in lowering vehicle emissions to meet regulatory standards
• Prevents check engine light triggers related to oxygen sensor faults
• Supports optimal catalytic converter function by providing accurate exhaust data

Installation Notes and Tips

• Ensure the sensor is installed in the correct rear position (rear, rear left, or rear right) as specified for your vehicle model
• Use proper tools to avoid damaging the 18 x 1.5 mm threads during installation
• Disconnect the battery before installation to prevent electrical shorts
• Verify connector compatibility with the square connector shape to ensure a secure connection
• Follow the included instruction sheet carefully for torque specifications and wiring details

Quality Assurance and Warranty

Delphi oxygen sensors, including the ES20407, are manufactured to meet OEM standards for durability and performance. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship. This sensor undergoes rigorous testing to ensure reliable operation in emission control systems of compatible Ford, Lincoln, and Mercury vehicles.