Walker 350-34543 Oxygen Sensor - Downstream, Downstream Front or Downstream Left

Overview of Walker 350-34543 Oxygen Sensor

The Walker 350-34543 oxygen sensor is designed specifically for select Audi and Volkswagen models, including the A3 Quattro, Passat, and RS7. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Audi and Volkswagen models
• 24.13-inch wiring harness length for flexible installation
• Radiused polygon male connector for secure connection
• Threaded mounting with 18.0 mm thread diameter
• Wire gauge measurement of 22 for reliable signal transmission
• Overall length of 27.68 inches for proper fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34543) is engineered to meet the exact specifications of various Audi and Volkswagen vehicles, including the A8 Quattro, Eos, R32, RS4, S6, S7, and S8. Featuring a heated sensor type, it allows for quicker sensor activation and improved emissions monitoring during cold starts. The sensor includes a 4-wire design with a radiused polygon male connector, ensuring a secure and precise electrical connection. Its 24.13-inch wiring harness length and 27.68-inch overall length provide ample reach for installation without modification. The threaded mounting type with an 18.0 mm diameter thread ensures compatibility with factory mounting points.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct replacement solution tailored for specific vehicle applications. The product line emphasizes durability and precise fitment, which helps maintain vehicle emissions compliance and engine efficiency.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for engine control units
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring proper combustion
• Reduces harmful emissions by maintaining optimal sensor function
• Prevents rough idling and engine performance issues caused by faulty sensors

Installation Notes and Tips

When installing the Walker 350-34543 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the radiused polygon male connector aligns correctly with the vehicle’s wiring harness connector. Thread the sensor carefully into the mounting hole to prevent cross-threading. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. The 350-34543 part undergoes rigorous testing to ensure durability and reliable performance under various operating conditions. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use.