Delphi ES20403 Oxygen Sensor - Rear

Overview of Delphi ES20403 Oxygen Sensor for Honda Civic

The Delphi ES20403 is a heated oxygen sensor designed specifically for the rear position on Honda Civic models. This sensor plays a critical role in monitoring exhaust gases to optimize engine performance and emissions control.

• Heated oxygen sensor for accurate and fast response
• 4-wire design with a square connector shape for secure fitment
• Thread size of 18 x 1.5 mm for direct replacement
• Overall length of 620 mm to match factory specifications
• Includes oxygen sensor and instruction sheet for installation guidance

Detailed Product Description

The Delphi ES20403 oxygen sensor is engineered to meet the specific requirements of Honda Civic vehicles. Featuring a heated sensor type, it ensures quicker warm-up times and reliable readings under various operating conditions. The 4-wire configuration supports both the sensor signal and heater circuit, improving durability and performance. Its square connector shape and 18 x 1.5 mm thread size allow for straightforward installation in the rear exhaust position. With an overall length of 620 mm, this sensor fits precisely without modification.

Applications and Problem Solving

This oxygen sensor is compatible with Honda Civic models requiring a rear oxygen sensor replacement. It is designed to address issues such as:

• Erratic or poor fuel economy due to faulty oxygen readings
• Check engine light triggered by oxygen sensor faults
• Increased emissions from improper air-fuel mixture
• Engine performance problems related to exhaust gas monitoring

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate tools to avoid damaging the sensor or threads
• Verify connector shape matches the vehicle harness for proper connection
• Follow the included instruction sheet for torque specifications and wiring

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for fit, form, and function. The ES20403 part number undergoes rigorous testing to ensure durability and accurate sensor output. Warranty coverage details should be confirmed with the product documentation or supplier.