Delphi ES20094 Oxygen Sensor

Delphi ES20094 Heated Oxygen Sensor Overview

The Delphi ES20094 is a heated oxygen sensor designed for precise emission control in a variety of General Motors and related 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 multiple GM models
• Overall length of 410.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Compatible with front and rear positions on various vehicles

Technical Details and Compatibility

The Delphi ES20094 oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving sensor response time and reducing emissions during cold starts. The 4-wire setup supports both the sensor signal and heater circuit, ensuring consistent performance. Its square connector shape and 18 x 1.5 mm thread size provide a secure fit in the exhaust system. With an overall length of 410 mm, this sensor fits correctly in the exhaust ports of multiple vehicles.

This sensor is compatible with a wide range of makes and models including Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, and Saturn. Specific models include the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, Buick Rainier, and Saturn Aura among others. The Delphi ES20094 is suitable for front, front left, front right, rear, rear left, and rear right positions, making it a versatile choice for emission control needs.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensor readings
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate sensor data
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Delphi ES20094 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use the included instruction sheet for proper wiring and torque specifications. Verify the sensor’s thread size (18 x 1.5 mm) matches the vehicle’s exhaust port. Confirm the correct sensor position (front or rear) based on the vehicle’s service manual. Avoid over-tightening to prevent damage to the sensor or exhaust manifold.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The ES20094 part number undergoes rigorous testing for accuracy and longevity. While specific warranty details may vary, Delphi typically offers a limited warranty covering defects in materials and workmanship. Refer to the product documentation for exact warranty terms.