Denso 234-4854 Oxygen Sensor - Downstream, Downstream Left, Upstream or Upstream Left

Denso OE Style Oxygen Sensor 234-4854

Denso 234-4854 is an OE Style heated oxygen sensor built for specific-fit applications on select Hyundai and Kia vehicles. It is engineered for direct replacement service on models such as the Hyundai Sonata, Santa Fe, Azera, Veracruz, Genesis Coupe, and Kia Sedona, Sorento, Amanti, and Borrego.

With a threaded mounting design, 4-wire configuration, and male connector, this sensor is built to match the original installation layout for a clean repair. The Denso OE Style line focuses on exact fit and OE-level construction, helping restore accurate exhaust feedback on the vehicles listed below.

Key Features

• Heated oxygen sensor for specific-fit emission control applications
• OE Style replacement from Denso
• 4-wire design with male connector
• Threaded mounting type with 0.708 thread diameter
• Wiring harness length: 12.68
• Built to match original sensor placement on select Hyundai and Kia models

Product Details

Denso 234-4854 is manufactured and tested to OE standards for direct replacement use. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and consistent exhaust monitoring. This part cross-references Bosch 15337 and NTK 25671 for the same application. It is a direct-fit oxygen sensor for vehicles that require an OE-style heated sensor in upstream or downstream positions, depending on the application.

Vehicle Fitment

• Fits 2010-2012 Hyundai Genesis Coupe, Upstream Left
• Fits 2010-2012 Hyundai Genesis Coupe, Downstream
• Fits 2007-2012 Hyundai Veracruz, Upstream Left
• Fits 2007-2012 Hyundai Veracruz, Downstream Left
• Fits 2006-2011 Hyundai Azera, Upstream
• Fits 2006-2011 Hyundai Azera, Downstream Left
• Fits 2009-2011 Hyundai Genesis, Downstream
• Fits 2007-2010 Hyundai Entourage, Upstream
• Fits 2007-2010 Hyundai Entourage, Downstream Left
• Fits 2006-2010 Hyundai Sonata, Upstream
• Fits 2006-2010 Hyundai Sonata, Downstream Left
• Fits 2007-2009 Hyundai Santa Fe, Upstream Left
• Fits 2007-2009 Hyundai Santa Fe, Downstream Left
• Fits 2006-2010 Kia Sedona, Upstream
• Fits 2006-2010 Kia Sedona, Downstream Left
• Fits 2009-2011 Kia Borrego, Upstream Left
• Fits 2009-2011 Kia Borrego, Downstream
• Fits 2007-2009 Kia Amanti, Upstream
• Fits 2007-2009 Kia Amanti, Downstream Left
• Fits 2007-2009 Kia Sorento, Upstream Left

Common Issues This Part May Address

• Fault codes related to oxygen sensor performance
• Rough idle or inconsistent air-fuel feedback
• Reduced fuel economy caused by inaccurate exhaust readings
• Failed emissions inspection tied to a worn sensor
• Delayed sensor response on Hyundai Sonata, Santa Fe, or Kia Sedona applications

Installation Notes and Tips

Confirm the connector style, wire count, thread diameter, and sensor position before installation. This is a specific-fit sensor, so matching the exact upstream or downstream location is important for Hyundai Genesis Coupe, Hyundai Veracruz, and Kia Borrego applications. Inspect the harness routing and exhaust threads before installation to ensure proper seating and secure connection.

Quality Assurance

Denso OE Style sensors are built and tested to strict OE standards for replacement accuracy and consistent performance. The design emphasizes first-time fit and long service life in demanding emission control applications.