Delphi ES10276 Oxygen Sensor

Delphi ES10276 Heated Oxygen Sensor Overview

The Delphi ES10276 is a heated oxygen sensor designed for precise emission control in select Mercedes-Benz vehicles. Engineered with a 4-wire configuration and a unique flat and round connector shape, this upstream sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated oxygen sensor with 4 wires for reliable signal and heater circuit
• Flat and round connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified Mercedes-Benz models
• Overall length of 755.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for reference
• Positioned for upstream installation to monitor exhaust gases before the catalytic converter

Technical Details and Compatibility

The Delphi ES10276 oxygen sensor is specifically designed for upstream placement in Mercedes-Benz 300CE, 300E, 300TE, and E320 models. Its heated sensor type allows for faster warm-up times, improving emission control efficiency shortly after engine start. The 4-wire design supports both the sensor signal and the integrated heater circuit, ensuring consistent operation under various driving conditions. The flat and round connector shape facilitates a secure electrical connection, reducing the risk of signal loss or corrosion. With a thread size of 18 x 1.5 mm and an overall length of 755.0 mm, this sensor fits precisely in the designated exhaust port, maintaining proper sensor positioning and function.

Common Applications and Problem Resolution

• Helps correct inaccurate air-fuel ratio readings that cause poor fuel economy
• Addresses engine performance issues related to faulty oxygen sensor signals
• Reduces increased emissions by providing accurate data to the engine control unit
• Prevents check engine light triggers related to oxygen sensor faults
• Supports proper catalytic converter operation by monitoring upstream exhaust gases

Installation Notes and Tips

When installing the Delphi ES10276 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18 x 1.5 mm thread to prevent damage to the sensor or exhaust manifold. Verify the connector shape matches the vehicle harness to ensure a secure connection. Follow the included instruction sheet for torque specifications and wiring guidance. Proper installation is critical for accurate sensor readings and emission control.

Quality Assurance and Warranty

Delphi oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The ES10276 part number is backed by Delphi's quality assurance processes, ensuring reliable operation in Mercedes-Benz 300CE, 300E, 300TE, and E320 models. Warranty coverage details should be confirmed at the point of purchase or with the manufacturer.