Denso 234-4859 Oxygen Sensor - Downstream or Upstream

Reliable Oxygen Sensor for Audi and Volkswagen Vehicles

The Denso OE Style Oxygen Sensor 234-4859 is designed specifically for select Audi and Volkswagen models, including the A6 Quattro, Allroad Quattro, Beetle, Golf, Jetta, TT, and TT Quattro. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance.

• Heated sensor type for faster response times
• Specific fit for Audi and Volkswagen models listed
• Threaded mounting type with 0.708 inch thread diameter
• 28.94-inch wiring harness length with 4 wires
• Male connector for secure electrical connection

About the Denso OE Style Product Line

The OE Style line from Denso offers oxygen sensors engineered to meet original equipment specifications. This ensures compatibility and reliable performance for emission control systems. The 234-4859 sensor maintains factory standards for fit, form, and function, making it a suitable replacement part for your Audi or Volkswagen vehicle.

Detailed Product Description

This Denso oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor’s 28.94-inch wiring harness and 4-wire configuration provide a direct fit with the vehicle’s existing wiring harness. Its threaded mounting type with a 0.708-inch diameter ensures secure installation in the exhaust system. The male connector is designed for a precise and reliable electrical connection, minimizing the risk of signal loss or corrosion.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for engine efficiency
• Reduces emissions by accurately monitoring exhaust gases
• Prevents engine performance issues related to faulty oxygen sensors
• Resolves check engine light triggers related to sensor failure
• Supports smooth operation of Audi A6 Quattro and Volkswagen Golf models

Installation Notes and Tips

When installing the Denso 234-4859 oxygen sensor, ensure the vehicle is 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. Proper torque should be applied to the threaded sensor to prevent exhaust leaks.

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 products typically come with a limited warranty covering defects in materials and workmanship. This ensures dependable performance and peace of mind when replacing your vehicle’s oxygen sensor.