Denso 234-4961 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4961

Denso 234-4961 is a specific-fit heated oxygen sensor built to OE-style standards for direct replacement on select Ford applications. It is engineered for accurate exhaust feedback, stable engine management, and consistent performance on downstream locations.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for direct replacement installation
• 4-wire configuration
• 15.16 in. wiring harness length
• OE Style construction for select Ford F-150 and Ford Mustang applications
• Part number 234-4961 for easy identification and ordering

Product Details

This Denso OE Style oxygen sensor is manufactured and tested to OE standards for exact replacement fit and dependable signal output. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long-term sensor durability and consistent engine performance. It is a direct-fit downstream oxygen sensor for 2015-2020 Ford F-150, 2021-2022 Ford F-150, and 2015-2020 Ford Mustang applications. The Denso 234-4961 is a practical choice when you need a replacement that matches the original sensor layout and connector style.

This part cross-references Bosch 16184 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect air-fuel feedback from a worn or contaminated sensor
• Reduced fuel economy caused by inaccurate exhaust readings
• Rough engine operation tied to faulty oxygen sensor data
• Emissions test failure caused by sensor performance issues

Installation Notes and Tips

• Verify the vehicle year, model, and downstream sensor location before ordering.
• Inspect the connector and harness routing to confirm the 15.16 in. lead length is appropriate for the application.
• Use proper oxygen sensor service tools to avoid damaging the sensor body or wiring.
• Clear diagnostic trouble codes after installation and confirm normal sensor operation with a scan tool.

Quality Assurance

Denso manufactures this OE Style oxygen sensor to strict original-equipment standards and tests each component for fit and function. The design focuses on precise replacement, reliable signal performance, and protection against common contamination sources that can shorten sensor life.