Walker 350-34499 Oxygen Sensor - Downstream or Downstream Right

Overview of Walker 350-34499 Oxygen Sensor

The Walker 350-34499 oxygen sensor is designed specifically for select Audi and Volkswagen models, including the A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, Bora, Q5, Q5 Sportback, and Q7. This heated oxygen sensor provides accurate emissions monitoring to help maintain engine performance and comply with emission standards.

• Heated oxygen sensor with 4-wire design for precise readings
• Specific fit for Audi and Volkswagen models listed
• Threaded mounting type with 18.0 mm thread diameter
• 25.12-inch wiring harness length with radiused polygon male connector
• Wire gauge measurement of 20 for reliable electrical conductivity
• Overall length of 28.66 inches for proper installation depth

Detailed Product Description

This Walker oxygen sensor (part number 350-34499) is engineered to meet the exact specifications required by various Audi and Volkswagen vehicles. Featuring a heated sensor type, it ensures faster warm-up times and more accurate oxygen level readings under different operating conditions. The sensor includes a 4-wire configuration, which supports both the heating element and signal transmission for optimal performance. The radiused polygon male connector and 25.12-inch wiring harness length provide a secure and precise connection to the vehicle’s wiring system. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation and a tight seal to prevent exhaust leaks.

Walker Products Aftermarket Line

Walker Products Aftermarket offers a range of emission control components designed to meet or exceed OEM standards. This oxygen sensor is part of their aftermarket line, which focuses on providing reliable, vehicle-specific replacement parts for emission systems. The 350-34499 sensor reflects Walker’s commitment to quality and compatibility, ensuring proper fitment and function for Audi and Volkswagen models requiring this specific sensor type.

Common Applications and Issues Addressed

• Restores accurate air-fuel mixture readings for engine control units
• Helps resolve check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing correct emissions data
• Reduces harmful exhaust emissions by maintaining proper sensor function
• Prevents rough idling and engine performance issues caused by faulty sensors

Installation Notes and Tips

• Ensure vehicle compatibility with Audi and Volkswagen models listed before installation
• Use appropriate tools to avoid damaging the 18.0 mm threaded mounting
• Verify connector orientation matches the radiused polygon male connector for secure fit
• Inspect wiring harness length (25.12 inches) to confirm routing without tension or interference
• Allow the sensor to reach operating temperature for accurate diagnostics after installation

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details for part number 350-34499 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to ensure long-term reliability in emission control applications.