Denso 234-4666 Oxygen Sensor - Downstream or Upstream

Reliable Oxygen Sensor for Audi and Volkswagen Vehicles

The Denso OE Style 234-4666 oxygen sensor is designed specifically for select Audi and Volkswagen models, including the A4, A4 Quattro, Cabrio, EuroVan, Golf, Jetta, and Passat. This heated oxygen sensor ensures accurate emissions control and optimal engine performance.

• Heated sensor type for faster activation and improved efficiency
• Specific fit for Audi and Volkswagen models listed
• Threaded mounting type with 0.708-inch thread diameter
• Four-wire design with male connector for secure connection
• Wiring harness length of 52.36 inches for proper installation

About the Denso OE Style Product Line

The OE Style line from Denso offers direct replacement parts engineered to meet original equipment specifications. The 234-4666 oxygen sensor maintains factory-level quality and fitment, ensuring compatibility and reliable performance for emission control systems in Audi and Volkswagen vehicles.

Detailed Product Description

This Denso oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, reducing emissions during cold starts. The sensor’s four-wire configuration supports both the heating element and signal transmission, while the male connector ensures a secure and precise fit. With a 0.708-inch threaded mounting type, installation is straightforward and compatible with the specified vehicle models. The 52.36-inch wiring harness length provides adequate reach for proper routing within the engine bay.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces harmful emissions by providing accurate oxygen level data
• Prevents engine performance issues related to faulty sensors
• Resolves check engine light triggers caused by oxygen sensor faults
• Supports smooth engine idling and acceleration

Installation Notes and Tips

• Ensure vehicle compatibility with Audi A4, A4 Quattro, Cabrio, EuroVan, Golf, Jetta, or Passat models
• Use appropriate tools for threaded sensor removal and installation
• Verify connector type matches the vehicle’s wiring harness (male connector)
• Handle sensor carefully to avoid damage to the heated element
• Follow manufacturer torque specifications for mounting

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 234-4666 part number is backed by Denso’s quality assurance processes. Please refer to Denso’s warranty policy for specific coverage details.