Denso 234-4455 Oxygen Sensor - Downstream Right

Denso 234-4455 Oxygen Sensor Overview

Denso 234-4455 is an OE Style heated oxygen sensor built for specific-fit replacement on select Hyundai and Kia applications. It is engineered for the downstream right position and supports accurate exhaust monitoring for 2010-2018 Hyundai Santa Fe, 2013-2019 Hyundai Santa Fe XL, and 2011-2018 Kia Sorento.

As an OE-style Denso oxygen sensor, this part is precision built for direct replacement and first-time fit. The design includes an aluminum oxide trap layer that helps protect the ceramic element from silicone and lead contamination, supporting stable engine operation and fuel control.

Key Features

• OE Style replacement oxygen sensor for specific-fit applications
• Heated sensor design for faster operating temperature
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 thread diameter
• 24.41-inch wiring harness length
• Downstream right position coverage for select Hyundai Santa Fe, Hyundai Santa Fe XL, and Kia Sorento models

Product Details

Denso 234-4455 is built to match OE standards for fit, form, and function. It is a specific-fit oxygen sensor for the downstream right location on 2010-2018 Hyundai Santa Fe, 2013-2019 Hyundai Santa Fe XL, and 2011-2018 Kia Sorento. The heated sensor design helps the unit reach operating temperature efficiently, while the protective trap layer is engineered to reduce contamination-related wear and maintain consistent exhaust feedback. This part cross-references Bosch 18021 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn downstream sensor
• Reduced fuel economy caused by inaccurate exhaust feedback
• Rougher engine operation tied to aging emissions sensors
• Failed emissions inspection due to sensor-related faults

Installation Notes and Tips

Confirm the downstream right position before ordering, since this sensor is not universal. Match the connector style, wire count, and threaded mounting dimensions to the original part. For best results, inspect the harness routing and exhaust threads before installation on Hyundai Santa Fe, Hyundai Santa Fe XL, or Kia Sorento applications.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for direct replacement performance and consistent fitment. The OE Style line is designed to deliver the correct part for the application the first time.