Walker 350-34585 Oxygen Sensor - Downstream Left or Downstream Right

Overview of Walker 350-34585 Oxygen Sensor

The Walker 350-34585 oxygen sensor is designed specifically for select Audi and Volkswagen models, including the A4 Quattro, A5 Quattro, and Q5. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for Audi and Volkswagen models such as A4 Quattro, A5 Quattro, A6 Quattro, and Q5
• 18.23-inch wiring harness length with 20-gauge wire for durability
• Threaded mounting type with 18.0 mm thread diameter for secure installation
• Radiused polygon male connector for exact fit and connection
• Overall length of 21.77 inches to accommodate factory specifications

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components engineered to meet or exceed OEM specifications. The line emphasizes precise fitment and reliable sensor performance, making it suitable for maintaining emissions compliance and engine efficiency in specific vehicle applications.

Product Features and Specifications

The Walker 350-34585 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved sensor responsiveness. Its 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent operation under various driving conditions. The wiring harness length of 18.23 inches and 20-gauge wire gauge measurement provide durability and ease of routing during installation. The sensor’s radiused polygon male connector and threaded mounting type with an 18.0 mm thread diameter ensure a secure and precise fit for compatible Audi and Volkswagen models.

Compatible Vehicles and Applications

• Audi A4 Quattro, A5 Quattro, A6 Quattro, A7 Quattro, A8 Quattro, S4, S5, SQ5
• Volkswagen Polo, Q5, Vento

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor failure or slow response
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Use the correct tools to remove the old sensor and install the Walker 350-34585 oxygen sensor, taking care to avoid damaging the wiring harness or connector. Verify the radiused polygon male connector is fully seated and secure. Torque the sensor to manufacturer specifications to ensure proper sealing and function.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34585 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability and performance.