Delphi ES20221 Oxygen Sensor - Front Left, Front Right or Rear

Delphi ES20221 Heated Oxygen Sensor Overview

The Delphi ES20221 is a heated oxygen sensor designed for precise emission control in select Hyundai and Kia 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 440.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Compatible with front left, front right, and rear positions depending on vehicle

Detailed Product Description

The Delphi ES20221 oxygen sensor is engineered to meet the emission control requirements of Hyundai and Kia models such as the Amanti, Santa Fe, Sedona, Sorento, and XG350. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings. 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 factory specifications for straightforward installation. With an overall length of 440.0 mm, this sensor fits precisely in the designated mounting locations, including front left, front right, and rear positions depending on the vehicle’s configuration.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces harmful emissions by providing accurate feedback to the engine control unit
• Resolves engine performance issues such as rough idling or hesitation
• Prevents check engine light triggers related to oxygen sensor faults
• Supports compliance with emission regulations for Hyundai and Kia vehicles

Installation Notes and Tips

• Ensure the sensor is installed in the correct position (front left, front right, or rear) as specified for your vehicle model
• Use the included instruction sheet for proper torque specifications and wiring connections
• Verify the connector shape matches the vehicle harness to avoid installation issues
• Inspect the thread size and sensor length to confirm compatibility before installation
• Allow the sensor to reach operating temperature for accurate readings after installation

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20221 part number 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 product quality.