Walker 350-34138 Oxygen Sensor

Overview of Walker 350-34138 Oxygen Sensor

The Walker 350-34138 oxygen sensor is designed specifically for select Audi and Volkswagen models, including the A4, A6, and Passat series. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated sensor type for faster response times
• Specific fit for Audi and Volkswagen vehicles
• 64.09 inches wiring harness length for flexible installation
• 22 gauge wire with 4-wire configuration
• Radiused polygon male connector for secure connection
• Threaded mounting with 18.0 mm thread diameter
• Overall length of 67.64 inches for proper fitment

Detailed Product Description

The Walker 350-34138 oxygen sensor is a heated sensor designed to provide reliable emissions feedback for specific Audi and Volkswagen models such as the A4 Quattro, A6 Quattro, S4, and Passat. Its 4-wire design includes a heating element that allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor features a radiused polygon male connector that ensures a secure and precise electrical connection, minimizing the risk of signal loss or corrosion. With a wiring harness length of 64.09 inches and an overall length of 67.64 inches, this sensor offers ample reach for installation in the engine bay. The threaded mounting type with an 18.0 mm thread diameter allows for straightforward replacement and compatibility with factory mounting points.

Walker Products Aftermarket Line

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable and vehicle-specific emission control components. Walker Products Aftermarket parts are engineered to meet or exceed OEM specifications, ensuring proper fit and function for emission sensors like the 350-34138. This line supports a wide range of applications, including the precise requirements of Audi and Volkswagen vehicles.

Common Applications and Issues Addressed

• Replacement for faulty or aging oxygen sensors in Audi A4, A6, and Volkswagen Passat models
• Helps resolve engine performance issues related to incorrect air-fuel mixture readings
• Reduces emissions by providing accurate feedback to the engine control unit
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel economy by maintaining optimal combustion efficiency

Installation Notes and Tips

When installing the Walker 350-34138 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. The 4-wire heated sensor requires proper wiring connections to function correctly. After installation, clear any diagnostic trouble codes and perform a test drive to confirm sensor operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. The 350-34138 part number undergoes rigorous testing to comply with emission control requirements. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use.