Delphi ES20159 Oxygen Sensor - Front, Rear, Rear Left or Rear Right

Delphi ES20159 Heated Oxygen Sensor Overview

The Delphi ES20159 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 fast response
• Square connector shape for secure and reliable connection
• Thread size of 18 x 1.5 mm for proper fitment
• Overall length of 820.0 mm to accommodate various installation points
• Includes oxygen sensor and instruction sheet for installation guidance
• Compatible with front, rear, rear left, and rear right positions

Technical Details and Compatibility

The Delphi ES20159 oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving emission control efficiency. Its 4-wire setup supports both sensor heating and signal transmission, enhancing durability and accuracy. The square connector shape ensures a secure fit with the vehicle’s wiring harness, reducing the risk of disconnection or signal loss. With a thread size of 18 x 1.5 mm and an overall length of 820 mm, this sensor fits specific mounting locations on Hyundai Sedona, Sonata, and Kia XG300 and XG350 models. The package includes the sensor itself along with an instruction sheet to assist with proper installation.

Compatible Vehicles and Applications

• Hyundai Sedona oxygen sensor replacement
• Hyundai Sonata emission control sensor upgrade
• Kia XG300 front and rear oxygen sensor fitment
• Kia XG350 rear left and rear right sensor installation

Common Issues Addressed by the Delphi ES20159

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture data
• Increased emissions failing vehicle inspections
• Engine performance problems such as rough idling or hesitation
• Sensor heater circuit malfunctions causing delayed sensor response

Installation Notes and Tips

When installing the Delphi ES20159 oxygen sensor, ensure the engine is cool to avoid burns. Use the correct 18 x 1.5 mm thread size socket to prevent damage to the sensor or mounting threads. Verify the square connector is fully seated and locked to maintain a stable electrical connection. Follow the included instruction sheet carefully for position-specific installation, as this sensor fits front, rear, rear left, and rear right locations on compatible Hyundai and Kia models.

Quality Assurance and Warranty

Delphi manufactures the ES20159 oxygen sensor to meet OEM specifications for reliable performance and durability. The heated sensor design supports consistent operation under varying engine conditions. This part is backed by Delphi’s quality standards, ensuring it meets emission control requirements for Hyundai Sedona, Sonata, and Kia XG300 and XG350 vehicles. Warranty coverage details should be confirmed at the point of purchase.