Walker 350-34625 Oxygen Sensor - Upstream Left or Upstream Right

Overview of Walker 350-34625 Oxygen Sensor for BMW Models

The Walker 350-34625 oxygen sensor is designed specifically for select BMW vehicles, including the 750iL, 850Ci, and 850i models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for BMW 750iL, 850Ci, and 850i
• Threaded mounting type with 18.0 mm thread diameter
• 17.44-inch wiring harness length with 4 wires of 20 gauge
• Female connector with radiused polygon shape for secure connection
• Overall length of 20.98 inches for proper installation

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The line emphasizes precise fitment and quality construction, ensuring compatibility and durability for emission sensors like the 350-34625.

Technical Description and Attributes

The Walker 350-34625 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. It includes a 17.44-inch wiring harness with four 20-gauge wires, facilitating a stable electrical connection. The sensor mounts via a threaded design with an 18.0 mm diameter, ensuring a secure fit in the exhaust system. The female connector with a radiused polygon shape provides a reliable and corrosion-resistant connection point. With an overall length of 20.98 inches, this sensor is engineered for precise installation in compatible BMW models.

Applications and Common Issues Addressed

• Helps maintain proper air-fuel mixture for BMW 750iL, 850Ci, and 850i
• Reduces engine misfires and rough idling caused by faulty oxygen sensors
• Improves emissions system performance to meet regulatory standards
• Prevents check engine light triggers related to oxygen sensor faults
• Supports optimal fuel economy by providing accurate exhaust gas data

Installation Notes and Tips

When installing the Walker 350-34625 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent seizing. Verify the connector matches the female radiused polygon shape for a secure fit. Proper routing of the 17.44-inch wiring harness is essential to avoid contact with hot exhaust components or moving parts. Follow BMW-specific torque specifications to avoid damage during installation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The 350-34625 part number is manufactured to provide consistent sensor output and reliable operation under normal driving conditions. Warranty coverage details should be confirmed with the product documentation or supplier, ensuring peace of mind with your purchase.