Delphi ES10258 Oxygen Sensor

Delphi ES10258 Oxygen Sensor Overview

The Delphi ES10258 is a heated oxygen sensor designed for precise emission control in Mercedes-Benz 190E vehicles. This upstream sensor helps maintain optimal engine performance and emissions compliance by accurately monitoring exhaust gases.

• Heated sensor type for faster response times
• Three-wire configuration for reliable signal transmission
• Square and round connector shape for secure fitment
• Thread size of 18 x 1.5 mm for direct replacement
• Overall length of 325.0 mm to match factory specifications
• Includes oxygen sensor and instruction sheet

Technical Details and Compatibility

The Delphi ES10258 oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its three-wire setup ensures accurate data communication with the vehicle’s engine control unit. The sensor’s unique square and round connector shape provides a secure and precise connection, minimizing the risk of electrical issues. With a thread size of 18 x 1.5 mm and an overall length of 325.0 mm, this sensor is engineered to fit the upstream position on Mercedes-Benz 190E models without modification.

Applications and Problem Resolution

This oxygen sensor is specifically compatible with Mercedes-Benz 190E vehicles and is intended for the upstream position in the exhaust system. It addresses several common issues, including:

• Erratic engine performance due to faulty oxygen readings
• Increased fuel consumption caused by incorrect air-fuel mixture
• Check engine light activation related to emission control faults
• Failed emissions tests due to sensor malfunction
• Rough idling or hesitation during acceleration

Installation Notes and Tips

When installing the Delphi ES10258 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the thread. Verify the connector shape matches the vehicle harness before installation. Follow the included instruction sheet for proper torque specifications and wiring connections. It is recommended to inspect the exhaust system for leaks or damage during replacement.

Quality Assurance and Warranty

Delphi manufactures the ES10258 oxygen sensor to meet 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. Refer to the product documentation for exact warranty terms.