Walker 350-34054 Oxygen Sensor - Downstream Left

Overview of Walker 350-34054 Oxygen Sensor for Audi, Porsche, Volkswagen

The Walker 350-34054 oxygen sensor is designed specifically for select Audi, Porsche, and Volkswagen models, including the Cayenne, Q7, and Touareg. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance through precise air-fuel mixture measurement.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Audi Cayenne, Porsche Cayenne, Volkswagen Q7, and Touareg
• Threaded mounting type with 18.0 mm thread diameter
• Connector features a radiused polygon shape and male gender
• Wiring harness length of 49.72 inches and overall length of 53.27 inches
• Wire gauge measurement of 22 for reliable electrical conductivity

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34054) is engineered to meet the exact specifications required by Audi, Porsche, and Volkswagen vehicles such as the Cayenne, Q7, and Touareg. The sensor’s heated design allows it to reach operating temperature quickly, improving emissions control and fuel efficiency. Featuring a 4-wire setup, it provides accurate voltage signals to the engine control unit (ECU) for precise air-fuel ratio adjustments. The threaded mounting type with an 18.0 mm diameter ensures secure installation, while the radiused polygon male connector guarantees a proper electrical connection. With a wiring harness length of nearly 50 inches and an overall length exceeding 53 inches, this sensor accommodates the specific routing needs of the compatible vehicles.

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 designed to maintain factory performance and emissions compliance for Audi, Porsche, and Volkswagen models. The product line emphasizes precise fitment and durability, supporting vehicle systems that rely on accurate sensor data.

Common Applications and Issues Addressed

• Restores proper oxygen sensing for improved fuel economy
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by maintaining correct air-fuel mixture
• Prevents engine performance issues caused by faulty sensor readings
• Supports smooth engine idling and acceleration response

Installation Notes and Tips

Installation of the Walker 350-34054 oxygen sensor requires removal of the old sensor from the threaded mounting point. Ensure the engine is cool before beginning work to avoid burns. Use appropriate oxygen sensor socket tools to prevent damage to the sensor or wiring. Verify the connector’s radiused polygon shape and male gender match the vehicle’s harness for proper connection. 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 reliable performance and durability. While specific warranty details for part number 350-34054 should be confirmed at the point of purchase, Walker typically offers limited warranties covering defects in materials and workmanship to support long-term use in Audi, Porsche, and Volkswagen vehicles.