Denso 234-4958 Oxygen Sensor - Downstream or Downstream Rear

Denso OE Style Oxygen Sensor for Kia

Denso 234-4958 is an OE Style heated oxygen sensor built for direct replacement on select Kia applications. It is engineered for exact fit and stable signal performance, with a specific-fit design and 4-wire configuration for the listed downstream locations.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit for direct replacement on listed Kia applications
• 4-wire design with 38.07 in. wiring harness length
• OE Style construction for factory-style fit and function
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Detailed Description

Denso 234-4958 is part of Denso’s OE Style line, which focuses on exact replacement fitment and factory-style performance. This oxygen sensor is manufactured and tested to OE standards and uses a heated design to support accurate exhaust monitoring in downstream positions. The 38.07-inch harness length and specific-fit configuration help simplify replacement on the listed Kia Soul, Forte, Forte Koup, and Forte5 applications. This part cross-references Bosch (e.g., 16651, 18143) for the same application.

For drivers searching for a downstream oxygen sensor for 2014-2018 Kia Soul or a downstream rear oxygen sensor for 2014-2016 Kia Forte, Forte Koup, or Forte5, Denso 234-4958 provides the correct OE-style replacement format. The part number 234-4958 is also useful when verifying interchange and catalog lookup before ordering.

Vehicle Fitment

• Fits 2014-2018 Kia Soul, Downstream, OE Style
• Fits 2014-2016 Kia Forte, Downstream Rear, Loc. After Secondary Converter; OE Style
• Fits 2014-2016 Kia Forte Koup, Downstream Rear, Loc. After Secondary Converter; OE Style
• Fits 2014-2016 Kia Forte5, Downstream Rear, Loc. After Secondary Converter; OE Style

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect exhaust oxygen readings at the downstream sensor location
• Slow sensor response from a worn heated oxygen sensor
• Fuel economy loss caused by inaccurate air-fuel feedback
• Emissions test failures tied to sensor degradation

Installation Notes and Tips

Confirm the connector, wire count, and downstream mounting location before installation. Match the vehicle application to the listed fitment for Kia Soul, Kia Forte, Kia Forte Koup, or Kia Forte5, and verify the sensor position after the secondary converter where noted. Use the part number 234-4958 to confirm interchange before replacing the original sensor.

Quality Assurance

Denso manufactures and tests this OE Style oxygen sensor to strict original-equipment standards. The design includes an aluminum oxide trap layer to help protect the sensing element from contamination, supporting consistent operation and long service life in the specified applications.