Delphi ES20158 Oxygen Sensor - Front or Rear

Delphi ES20158 Oxygen Sensor Overview

The Delphi ES20158 is a heated oxygen sensor built for precise exhaust monitoring in compatible Hyundai and Kia applications. It draws on Delphi’s OE heritage and decades of supplier experience to deliver the fit and signal characteristics expected in modern emission control systems.

Compatible with front and rear sensor locations on select Hyundai Elantra, Accent, Tucson, Tiburon, and Kia Rio, Rio5, Soul, Sportage, Spectra, and Spectra5 applications, this Delphi oxygen sensor is a direct replacement option for vehicles that use a 4-wire, square-connector design.

Key Features

• Heated oxygen sensor for faster operating temperature and signal response
• 4-wire design for common OE-style sensor configurations
• Square connector shape for application-specific electrical connection
• 18 x 1.5 mm thread size for proper exhaust bung fitment
• Overall length: 375.0
• Includes oxygen sensor and instruction sheet
• Delphi ES20158 part number for easy identification and ordering

Detailed Description

Delphi ES20158 is engineered for emission control systems that rely on accurate oxygen content feedback to help the engine control module manage fuel delivery and catalyst performance. Delphi’s 100 years of OE experience is reflected in the sensor design, with aftermarket parts built from the company’s original equipment knowledge base. This oxygen sensor is listed for front and rear positions depending on the vehicle application, making it a practical replacement for select Hyundai Elantra, Accent, Tucson, Tiburon, and Kia Rio, Rio5, Soul, Sportage, Spectra, and Spectra5 models. If you are searching for a Delphi ES20158 oxygen sensor for Hyundai Elantra rear or Kia Rio front applications, verify the exact position in the vehicle-specific application tab before ordering.

This part cross-references Bosch 13461 and DENSO Auto Parts 234-4851 for the same application.

Common Issues This Part May Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback from a worn sensor
• Reduced catalyst efficiency monitoring accuracy
• Slow sensor response during closed-loop operation
• Emission control fault codes tied to front or rear sensor readings

Installation Notes and Tips

Confirm the vehicle’s exact sensor position before installation, since this part is listed for both front and rear locations across different applications. Match the 4-wire connector and square plug style to the original sensor, and verify the 18 x 1.5 mm thread size before threading into the exhaust bung. For best results, compare the original sensor length and routing path to the Delphi ES20158 before final installation.

Quality Assurance

Delphi builds this oxygen sensor using OE-based engineering knowledge developed through long-term supplier experience with major automakers. The included instruction sheet supports correct installation and application verification.