Denso 234-4429 Oxygen Sensor - Upstream Right

Denso OE Style Oxygen Sensor 234-4429

The Denso 234-4429 is an OE-style heated oxygen sensor built for specific applications and exact replacement fitment. It is engineered for upstream right locations on select Kia and Hyundai models, including Kia Optima, Kia Magentis, Kia Rondo, and Hyundai Santa Fe.

Denso’s OE Style line focuses on direct-fit replacement parts that match factory specifications. This oxygen sensor uses a threaded mounting design, a male connector, 4 wires, and a 12.28-inch wiring harness for a precise installation on the correct vehicle application.

Key Features

• OE Style replacement oxygen sensor for specific fitment
• Heated sensor design for faster operating response
• Threaded mounting type with 0.708-inch thread diameter
• 4-wire configuration with male connector
• 12.28-inch wiring harness length
• Built to Denso OE standards for exact replacement fit
• Part number: 234-4429

OE Style Construction

Denso’s OE Style product line is designed around factory-style replacement requirements, with precision-built components that match the original sensor layout. The sensor includes Denso’s aluminum oxide trap layer, which helps protect the ceramic element from silicone and lead contamination. That construction supports stable engine management performance, fuel efficiency, and long service life in the correct application. This part cross-references Bosch 15364 and NTK 25194 for the same application.

Fitment

• Fits 2007-2012 Kia Rondo, upstream right.
• Fits 2007-2010 Kia Magentis, upstream right.
• Fits 2006-2010 Kia Optima, upstream right.
• Fits 2007-2009 Hyundai Santa Fe, upstream right.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn upstream sensor
• Reduced fuel economy caused by slow sensor response
• Rough idle or drivability concerns tied to sensor contamination
• Emissions test failures linked to a faulty upstream oxygen sensor

Installation Notes and Tips

Confirm the vehicle year, make, model, and upstream right position before ordering. Match the connector style, wire count, and threaded mounting dimensions to the original sensor. For best results, inspect the harness routing and connector condition during replacement, and verify the sensor location against the vehicle’s exhaust layout.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for direct replacement performance and first-time fit. The 234-4429 is built for the specified Kia and Hyundai applications with factory-style dimensions and materials.