Delphi ES20053 Oxygen Sensor - Front, Rear or Rear Left

Delphi ES20053 Heated Oxygen Sensor Overview

The Delphi ES20053 is a heated oxygen sensor designed for precise emission control in select Acura and Honda vehicles. Engineered with a 4-wire configuration and a square connector shape, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated oxygen sensor with 4 wires for reliable operation
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Overall length of 425.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: front, rear, or rear left depending on vehicle model

Detailed Product Description

The Delphi ES20053 oxygen sensor is engineered to meet the emission control requirements of Acura and Honda models such as the Accord, Civic, Civic del Sol, and NSX. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings in the exhaust stream. The 4-wire design supports both sensor heating and signal transmission, improving responsiveness and durability. Its square connector shape ensures a secure electrical connection, while the 18 x 1.5 mm thread size matches OEM specifications for straightforward installation. With an overall length of 425.0 mm, this sensor fits precisely in the designated exhaust port locations, including front, rear, or rear left positions depending on the vehicle’s configuration.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces emissions by providing accurate feedback to the engine control unit
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by optimizing engine performance
• Prevents rough idling and engine hesitation caused by faulty sensors

Installation Notes and Tips

• Verify sensor position (front, rear, or rear left) specific to your Acura or Honda model before installation
• Use proper tools to avoid damaging the 18 x 1.5 mm threaded sensor
• Ensure the square connector is fully seated to prevent electrical issues
• Follow the included instruction sheet for torque specifications and wiring guidance
• Allow the engine to cool before removing the old sensor to avoid burns

Quality Assurance and Warranty

Delphi manufactures the ES20053 oxygen sensor to meet strict OEM standards for durability and performance. Each sensor 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 your replacement part.