Denso 234-4863 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4863

Denso 234-4863 is an OE Style heated oxygen sensor built for specific-fit replacement in select Volvo applications. It is engineered to match factory-style fitment and signal performance for downstream exhaust monitoring, with a threaded mounting design and 4-wire male connector for direct replacement service.

Key Features

• OE Style replacement oxygen sensor for precise fit and function
• Heated sensor design for faster operating temperature and stable readings
• Specific fit application with threaded mounting type
• 4-wire configuration with male connector
• 29.88-inch wiring harness length for application-specific routing
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination
• Built and tested to OE standards for replacement use

Product Details

This Denso oxygen sensor is designed for downstream use on select Volvo C70, S60, V70, and S70 models. The Denso OE Style line focuses on exact replacement fitment, and part number 234-4863 follows that approach with application-specific threading, connector style, and harness length. For drivers searching for a Volvo C70 downstream oxygen sensor, Volvo S60 downstream oxygen sensor, or Volvo V70 downstream oxygen sensor, this part provides a direct-fit service option.

Denso’s OE-style construction is intended to support accurate exhaust feedback and consistent engine management. The protective trap layer is used to reduce contamination risk from silicone and lead exposure, helping preserve sensor response over time. This part cross-references Bosch 16197 and NTK 25592 for the same application.

Vehicle Fitment

• Fits 1999-2004 Volvo C70, downstream
• Fits 2001-2004 Volvo S60, downstream
• Fits 1999-2004 Volvo V70, downstream
• Fits 1999-2000 Volvo S70, downstream

Common Issues This Sensor May Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect exhaust oxygen readings affecting fuel control
• Reduced fuel economy caused by a worn or slow-responding sensor
• Emissions test failures tied to sensor performance
• Rougher engine operation from inaccurate exhaust feedback

Installation Notes and Tips

Confirm the connector style, thread diameter, and downstream location before installation. Because this is a specific-fit sensor, verify the vehicle year, model, and exhaust position against the fitment list for Denso 234-4863. Inspect the harness routing and connector condition during replacement to ensure a secure installation.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and first-time fit. The OE Style line is built to deliver the correct part and fit for the listed Volvo applications.