Denso 234-8039 Oxygen Sensor - Downstream or Downstream Right

Denso OE Style Oxygen Sensor 234-8039

Denso 234-8039 is an OE Style heated oxygen sensor built for direct replacement on select Ford and Lincoln applications. It is engineered for exact fitment, stable signal performance, and reliable exhaust monitoring on downstream positions.

Key Features

• Heated oxygen sensor with a 4-wire design
• Specific fit for direct replacement installation
• Threaded mounting with a 0.697 in. thread diameter
• 24.76 in. wiring harness length
• Female connector for OE-style electrical connection
• Built to Denso OE standards for fit and function
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

OE Style Construction

Denso’s OE Style line is built for drivers and technicians who need a replacement sensor that matches the original application closely. The 234-8039 uses a heated sensing element and a specific-fit design to support accurate exhaust feedback on downstream systems. This helps maintain proper engine management on vehicles such as the Ford Edge, Ford Fusion, Ford Explorer, and Lincoln MKZ.

This part cross-references Bosch 16260 for the same application.

Vehicle Fitment

• Fits 2021-2022 Ford F-250 Super Duty, Downstream Left
• Fits 2022 Ford F-350 Super Duty, Downstream Left
• Fits 2017-2020 Ford Edge, Downstream
• Fits 2019-2020 Ford Fusion, Downstream
• Fits 2017 Ford Fusion, Downstream
• Fits 2017-2020 Ford GT, Downstream
• Fits 2017-2020 Lincoln MKZ, Downstream
• Fits 2017-2019 Ford Escape, Downstream
• Fits 2016-2019 Ford Explorer, Downstream
• Fits 2016-2019 Ford Transit-150, Downstream Right
• Fits 2016-2019 Ford Transit-250, Downstream Right
• Fits 2016-2019 Ford Transit-350, Downstream Right
• Fits 2016-2019 Ford Transit-350 HD, Downstream Right
• Fits 2017-2019 Lincoln MKC, Downstream
• Fits 2019 Lincoln Nautilus, Downstream
• Fits 2016-2018 Ford Focus, Downstream
• Fits 2018 Ford Fusion, Downstream
• Fits 2017 Ford Taurus, Downstream
• Fits 2016 Ford Edge, Downstream
• Fits 2016 Ford Taurus, Downstream
• Fits 2016 Lincoln MKT, Downstream

Common Replacement Uses

• Restores oxygen sensor signal issues caused by age or contamination
• Addresses downstream sensor fault codes on supported Ford and Lincoln vehicles
• Helps correct fuel control and emissions monitoring concerns
• Supports repair of drivability problems tied to inaccurate exhaust readings
• Replaces a worn OE-style sensor on threaded downstream locations

Installation Notes

Verify the connector style, wire count, thread diameter, and downstream position before installation. This sensor is a specific-fit replacement for threaded mounting locations, so matching the vehicle application is important for proper installation on Ford F-250 Super Duty, Ford Explorer, and Lincoln MKZ models.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent replacement quality. The design includes a protective aluminum oxide trap layer to help shield the sensing element from contamination and support long service life.