Denso 234-4458 Oxygen Sensor - Upstream or Upstream Left

Denso OE Style Oxygen Sensor 234-4458

Denso 234-4458 is an OE Style heated oxygen sensor built for exact replacement and first-time fit. It is designed for upstream left applications on select Hyundai and Kia vehicles, including Santa Fe, Santa Fe XL, Sorento, and Sedona models.

The OE Style line focuses on direct-fit replacement parts that match factory specifications. This sensor uses a threaded mounting design, a 4-wire male connector, and a 12.60-inch wiring harness length for a factory-style installation on the correct application.

Key Features

• Heated oxygen sensor for upstream left or upstream positions
• Specific fit design for direct replacement on listed Hyundai and Kia applications
• 4-wire configuration with male connector
• Threaded mounting type with 0.708-inch thread diameter
• 12.60-inch wiring harness length
• Built to OE standards for accurate replacement fitment

Product Details

Denso 234-4458 is engineered for emissions control systems where precise oxygen sensor feedback is required. The sensor is manufactured and tested to OE-level standards, and Denso uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination. That protection supports stable engine operation, fuel efficiency, and long service life in the correct application.

Compatible With select Hyundai Santa Fe XL, Hyundai Santa Fe, Kia Sedona, Kia Sorento, Hyundai Azera, Kia Cadenza, and Hyundai Genesis Coupe applications. This part cross-references Bosch 18044 for the same application.

What This Oxygen Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback from a worn upstream sensor
• Reduced fuel economy caused by slow sensor response
• Rough idle or drivability issues tied to emissions feedback
• Failed emissions inspection due to sensor-related faults

Installation Notes

Verify the connector style, wire count, thread diameter, and upstream left or upstream position before installation. This is a specific-fit sensor, so matching the vehicle year, make, model, and sensor location is important for proper operation. Use the listed fitment to confirm the correct application for Hyundai Santa Fe XL, Hyundai Santa Fe, Kia Sedona, and Kia Sorento models.

• Fits 2013-2019 Hyundai Santa Fe XL, Upstream Left
• Fits 2010-2018 Hyundai Santa Fe, Upstream Left
• Fits 2014-2018 Kia Sedona, Upstream Left
• Fits 2011-2018 Kia Sorento, Upstream Left
• Fits 2012-2017 Hyundai Azera, Upstream Left
• Fits 2014-2017 Kia Cadenza, Upstream Left
• Fits 2013-2016 Hyundai Genesis Coupe, Upstream Left
• Fits 2011-2012 Kia Sedona, Upstream

Quality Assurance

Denso manufactures this OE Style oxygen sensor to strict original-equipment standards and tests each component for replacement accuracy and fit. The design is intended to deliver the correct part for the listed application the first time.