Delphi ES20357 Oxygen Sensor

OE-Style Oxygen Sensor for Hyundai and Kia

The Delphi ES20357 oxygen sensor is built for direct-fit emission control service on select Hyundai and Kia applications. With a heated design, 4-wire configuration, flat connector shape, and 18 x 1.5 mm thread size, it supports accurate exhaust monitoring across front and rear positions where specified by the vehicle application.

Delphi draws on OE heritage and decades of supplier experience, bringing production knowledge from original equipment development into this aftermarket oxygen sensor. The ES20357 is a practical replacement choice for Hyundai Genesis, Sonata, Azera, Veracruz, and Kia Sedona, Sorento, Amanti, Borrego, and Entourage applications.

Key Features

• Heated oxygen sensor for faster operating temperature and signal response
• 4-wire design with flat connector shape
• 18 x 1.5 mm thread size for specified applications
• Overall length: 330.0
• Package contents: oxygen sensor and instruction sheet
• Fits front and rear positions where listed in the application data
• Delphi ES20357 replacement for select Hyundai and Kia vehicles

Detailed Description

The Delphi ES20357 is an emission control sensor used to monitor exhaust oxygen content and support engine management decisions. It is engineered for select Hyundai Genesis Coupe, Veracruz, Azera, Genesis, Sonata, Santa Fe, Entourage, and Kia Sedona, Amanti, Borrego, Sorento applications, with position-specific coverage that includes front left, front right, rear, rear left, and rear right locations as listed. This part cross-references DENSO Auto Parts (e.g., 234-4854) for the same application.

Built with Delphi OE experience behind it, this oxygen sensor is a direct replacement option for drivers servicing emissions-related faults on Hyundai Sonata and Kia Sedona platforms, as well as other listed Hyundai and Kia models. The ES20357 part number is also referenced in interchange listings for multiple OE and aftermarket numbers, helping simplify replacement matching.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the engine control system
• Slow or unstable sensor response after exhaust heat-up
• Emissions test failures tied to sensor output issues
• Rough running or fuel trim concerns caused by faulty exhaust readings

Installation Notes and Tips

Verify the exact position before ordering, since this sensor is listed for multiple locations including front left, front right, rear, rear left, and rear right depending on the vehicle. Confirm connector shape, wire count, thread size, and overall length against the original sensor before installation. Use the application tab to match the correct fitment for your Hyundai or Kia model, including Hyundai Genesis Coupe, Sonata, Azera, Veracruz, and Kia Sedona or Sorento applications.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and knowledge developed through long-term supplier experience with major automakers. The ES20357 reflects that background in a service replacement oxygen sensor for select Hyundai and Kia emissions systems.