Denso 234-5007 Air / Fuel Ratio Sensor - Upstream

Denso OE Style Air/Fuel Ratio Sensor 234-5007

Denso 234-5007 is an OE Style heated air/fuel ratio sensor built for direct replacement on select Hyundai, Kia, Chevrolet, Pontiac, and Saturn applications. It is engineered for specific fitment and precise signal control, making it a practical choice for upstream sensor replacement on vehicles such as the Kia Forte, Hyundai Sonata, and Chevrolet Cobalt.

Key Features

• OE Style replacement air/fuel ratio sensor for upstream locations
• Heated sensor design for faster operating temperature
• Specific fit application for accurate installation and sensor placement
• 5-wire configuration with male connector
• Wiring harness length: 14.96 in.
• Thread diameter: 0.711 in.
• Built and tested to OE standards for replacement accuracy

OE Style Construction

The Denso OE Style line focuses on direct replacement parts that match original equipment fit and function. This sensor is precision-built for exact replacement and first-time fit, helping maintain proper air/fuel ratio feedback to the engine control system. Part number 234-5007 is listed for upstream use on multiple platforms, including 2021-2024 Kia Forte, 2015-2018 Hyundai Sonata, and 2008-2010 Chevrolet Cobalt.

This part cross-references Bosch 15388 and NTK 24325 for the same application.

Vehicle Fitment

• Fits 2021-2024 Kia Forte, Upstream
• Fits 2015-2018 Hyundai Sonata, Upstream
• Fits 2014-2018 Kia Forte5, Upstream
• Fits 2016-2018 Kia Optima, Upstream
• Fits 2015-2017 Hyundai Veloster, Upstream
• Fits 2017 Kia Forte Koup, Upstream
• Fits 2014-2016 Kia Forte Koup, Upstream
• Fits 2008-2010 Chevrolet Cobalt, Upstream
• Fits 2008-2010 Chevrolet HHR, Upstream
• Fits 2009-2010 Saturn Sky, Upstream
• Fits 2009 Pontiac Solstice, Upstream
• Fits 2007-2008 Pontiac Solstice, Upstream, 2nd Design; w/ 26" Downstream Sensor; OE Style
• Fits 2007-2008 Pontiac Solstice, Upstream, 1st Design; w/ 15" Downstream Sensor; OE Style
• Fits 2007-2008 Saturn Sky, Upstream, 2nd Design; w/ 37" Downstream Sensor; OE Style
• Fits 2007-2008 Saturn Sky, Upstream, 1st Design; w/ 15" Downstream Sensor; OE Style

Common Replacement Uses

• Replacing a failed upstream air/fuel ratio sensor
• Addressing check engine light concerns related to mixture feedback
• Restoring proper fuel trim response after sensor aging
• Correcting drivability issues tied to inaccurate oxygen sensing
• Replacing a damaged connector or worn sensor harness on OE-style applications

Installation Notes

Verify the vehicle year, make, model, and upstream position before ordering. Some Pontiac Solstice and Saturn Sky applications require design-specific matching based on downstream sensor length, so confirm the original sensor configuration against the vehicle listing. Use the existing connector style and thread size as reference points during installation.

Quality Assurance

Denso manufactures and tests this sensor to strict OE standards for replacement accuracy and consistent fit. The OE Style line is intended to deliver the correct part and fit for the listed applications, including Kia Forte, Hyundai Sonata, and Chevrolet Cobalt platforms.