Walker 350-34594 Oxygen Sensor - Upstream Left or Upstream Right

Overview of Walker Oxygen Sensor 350-34594 for BMW 530i and 540i

The Walker 350-34594 oxygen sensor is designed specifically for BMW 530i and 540i models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for BMW 530i and 540i models
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for reliable connection
• Wiring harness length of 20.2 inches and overall length of 23.74 inches
• Wire gauge measurement of 20 for durability and signal integrity

Detailed Product Description

The Walker 350-34594 oxygen sensor is engineered to meet the exact specifications required by BMW 530i and 540i vehicles. Featuring a heated sensor type, it helps the engine control module accurately monitor and adjust the air-fuel mixture for efficient combustion and reduced emissions. The sensor includes a 4-wire design, which supports heating elements and signal transmission, improving sensor response time and reliability.

The sensor’s threaded mounting type with an 18.0 mm diameter ensures a secure fit in the exhaust system. Its radiused polygon male connector provides a precise and stable electrical connection, minimizing the risk of disconnection or signal loss. The wiring harness length of 20.2 inches and overall length of 23.74 inches allow for proper routing and installation within the vehicle’s engine bay.

Walker Products Aftermarket Line

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components that meet or exceed OEM standards. The product line emphasizes compatibility and durability, making it a reliable choice for maintaining emission system performance in BMW vehicles.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel ratio management
• Helps resolve engine performance issues such as rough idling or hesitation
• Reduces emissions by ensuring correct catalytic converter operation
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by maintaining optimal combustion

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket for threaded removal and installation
• Verify connector type matches the vehicle harness before installation
• Do not over-tighten; follow torque specifications for 18.0 mm thread diameter
• Inspect wiring harness for damage and secure routing to prevent abrasion

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. The 350-34594 part number undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier.