Denso 234-4861 Oxygen Sensor - Downstream or Downstream Right

Overview of the Denso OE Style Oxygen Sensor 234-4861

The Denso OE Style Oxygen Sensor 234-4861 is designed specifically for select Volvo models, including the C30, C70, S40, S60, S80, V50, V70, XC70, and XC90. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

• Heated sensor type for faster warm-up and accurate readings
• Specific fit for Volvo vehicles to ensure proper installation and function
• Threaded mounting type with a 0.708-inch thread diameter for secure attachment
• 29.13-inch wiring harness length with 4 wires and a male connector for direct compatibility
• Part number 234-4861 for easy identification and replacement

Detailed Features and Specifications

This oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions sooner after engine start. The 29.13-inch wiring harness length provides sufficient reach for installation in the exhaust system of compatible Volvo models. With a 4-wire configuration and a male connector, the sensor integrates seamlessly with the vehicle’s existing wiring harness. The threaded mounting type with a 0.708-inch diameter ensures a secure and leak-free fit in the exhaust manifold or pipe.

About the Denso OE Style Product Line

The Denso OE Style line is engineered to meet original equipment specifications, providing a direct replacement for factory-installed parts. This ensures that the 234-4861 oxygen sensor maintains the performance and reliability expected from the original Volvo components. The OE Style line focuses on precise fitment and function, making it suitable for professional repairs and maintenance.

Common Applications and Problem Resolution

• Restores accurate oxygen sensing for improved fuel economy
• Helps resolve check engine light issues related to oxygen sensor faults
• Reduces harmful emissions by ensuring proper air-fuel mixture monitoring
• Prevents engine performance problems caused by faulty sensor readings
• Supports smooth engine idling and acceleration in Volvo C30, S60, XC90, and other compatible models

Installation Notes and Tips

When installing the Denso 234-4861 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the wiring harness length and connector type match the vehicle’s specifications before installation. Proper torque should be applied to the sensor to prevent leaks and ensure sensor longevity.

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards and original equipment specifications. While specific warranty details may vary, Denso parts typically come with a limited warranty covering defects in materials and workmanship. This ensures reliability and peace of mind when replacing oxygen sensors on Volvo vehicles.