Walker 350-34437 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Overview of Walker 350-34437 Oxygen Sensor

The Walker 350-34437 oxygen sensor is designed specifically for select BMW and Land Rover models, providing precise emissions control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector for secure installation.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for BMW 3 Series, 5 Series, Z Series, and Land Rover Range Rover, X3, X5
• 36.54-inch wiring harness length with 20-gauge wire
• Thread diameter of 18.0 mm for threaded mounting
• Radiused polygon female connector for reliable connection
• Overall length of 40.08 inches for proper fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34437) is engineered to meet the exact specifications of various BMW and Land Rover vehicles, including models such as the BMW 320i, 328i, 330i, 525i, and Land Rover Range Rover, X3, and X5. The sensor is heated, which allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire design supports both the sensor signal and heater circuit, ensuring accurate oxygen level readings and optimal engine management.

The sensor’s wiring harness length of 36.54 inches and overall length of 40.08 inches provide sufficient reach for installation in the designated engine compartments. The 20-gauge wire ensures durability and resistance to heat and vibration. The threaded mounting type with an 18.0 mm thread diameter allows for secure attachment to the exhaust system. The radiused polygon female connector ensures a precise and stable electrical connection, minimizing the risk of disconnection or signal loss.

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, designed to provide consistent performance and durability for specific vehicle applications. By using Walker Products Aftermarket parts, technicians and vehicle owners can maintain proper emissions function and engine efficiency with components tailored to their vehicle’s requirements.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in BMW 3 Series and 5 Series models
• Restores accurate air-fuel mixture readings for improved engine performance
• Helps resolve check engine light triggers related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter operation
• Prevents rough idling and poor fuel economy caused by sensor malfunction

Installation Notes and Tips

• Ensure vehicle compatibility with the specific BMW or Land Rover model before installation
• Use proper tools to avoid damaging the threaded sensor or connector
• Check wiring harness routing to prevent contact with hot exhaust components
• Verify connector engagement to avoid electrical issues
• Follow manufacturer torque specifications for sensor mounting

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable operation and longevity. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain compliance with emissions regulations and supports vehicle performance.