Walker 350-35041 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker 350-35041 Oxygen Sensor

The Walker 350-35041 oxygen sensor is designed for precise emission control in select Audi, BMW, Buick, and Volkswagen models. This heated oxygen sensor ensures accurate air-fuel mixture readings to maintain optimal engine performance and emissions compliance.

• Heated sensor type for faster response times
• Specific fit for models including BMW 545i, 645Ci, 745i, 745Li, Audi A8 Quattro, S3, Volkswagen Touareg, and more
• 21.18-inch wiring harness length with 5 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Threaded mounting with 18.0 mm thread diameter
• Overall length of 24.72 inches for proper installation depth

Detailed Product Description

This oxygen sensor from Walker Products Aftermarket, part number 350-35041, is engineered to meet the exact specifications of various European and American vehicles. The heated sensor element allows quicker activation, improving fuel efficiency and reducing emissions shortly after engine start. The 5-wire configuration and 20 gauge wire ensure reliable signal transmission, while the radiused polygon male connector provides a secure and precise fit. The threaded mounting type with an 18.0 mm diameter allows straightforward installation in the exhaust system. The wiring harness length of 21.18 inches and overall length of 24.72 inches are designed to accommodate the specific routing requirements of compatible vehicles.

Compatible Vehicles and Applications

This oxygen sensor is compatible with specific models from Audi, BMW, Buick, and Volkswagen, including:

• BMW 545i, 645Ci, 745i, 745Li, X5
• Audi A8 Quattro, Allroad Quattro, S3
• Buick Allure, LaCrosse, Rendezvous
• Volkswagen Touareg

It is intended for use in emission control systems to monitor oxygen levels in the exhaust gases, helping the engine control unit adjust fuel delivery for optimal combustion.

Common Issues Addressed by This Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Engine hesitation or rough idling caused by sensor malfunction
• Reduced engine performance linked to inaccurate oxygen sensing

Installation Notes and Tips

• Ensure the vehicle is compatible with part number 350-35041 before installation
• Use proper tools to avoid damaging the threaded mounting or connector
• Verify the connector shape and gender match the vehicle harness for a secure fit
• Inspect wiring harness length and routing to prevent strain or damage
• Follow manufacturer torque specifications for threaded installation

Quality Assurance and Warranty

Walker Products Aftermarket maintains strict quality control standards for the 350-35041 oxygen sensor to ensure reliable performance and durability. This sensor is manufactured to meet or exceed OEM specifications for fit, form, and function. Warranty coverage details should be confirmed with the product documentation or supplier.