Delphi ES20112 Oxygen Sensor - Front

Delphi ES20112 Heated Oxygen Sensor Overview

The Delphi ES20112 is a heated oxygen sensor designed for precise emission control in select Chevrolet, Geo, and Suzuki 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 front position installation
• Overall length of 380.0 mm for correct placement
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

The Delphi ES20112 oxygen sensor features a heated sensor type that allows for faster warm-up times, improving emission control efficiency shortly after engine start. Its 4-wire design supports both the sensor signal and heater circuit, ensuring consistent sensor operation. The square connector shape provides a secure electrical connection, reducing the risk of disconnection or signal loss. With a thread size of 18 x 1.5 mm, this sensor is designed for front position installation, making it compatible with specific models such as the Chevrolet Metro, Geo Metro, Suzuki Swift, Suzuki Tracker, and Suzuki Vitara.

Applications and Problem Resolution

This oxygen sensor is used to monitor the oxygen levels in the exhaust gases, enabling the engine control unit to adjust the air-fuel ratio for efficient combustion. It helps address issues such as:

• Inaccurate air-fuel mixture readings causing poor fuel economy
• Increased emissions due to faulty sensor signals
• Engine performance problems like rough idling or hesitation
• Check engine light triggered by oxygen sensor faults
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

When installing the Delphi ES20112 oxygen sensor, ensure the engine is cool to avoid burns. Use the correct thread size (18 x 1.5 mm) to avoid cross-threading. Verify the square connector matches the vehicle’s wiring harness for a proper fit. It is recommended to apply anti-seize compound on the sensor threads to facilitate future removal. Follow the included instruction sheet carefully for proper torque specifications and wiring connections.

Quality Assurance and Warranty

Delphi manufactures the ES20112 oxygen sensor to meet OEM standards for durability and performance. The sensor undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product quality.