Walker 350-34178 Oxygen Sensor - Upstream

Overview of Walker 350-34178 Oxygen Sensor for BMW M3 and Z3

The Walker 350-34178 oxygen sensor is designed specifically for BMW M3 and Z3 models, providing precise emission control and engine performance monitoring. This heated oxygen sensor ensures accurate readings for optimal fuel mixture adjustments.

• Heated oxygen sensor type for faster response times
• Specific fit for BMW M3 and Z3 vehicles
• 29.84-inch wiring harness length for flexible installation
• 20 gauge wire measurement with 4 wires for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 33.39 inches for proper fitment

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components that meet or exceed OEM specifications. The line emphasizes durability and precise fitment, ensuring compatibility with specific vehicle models like the BMW M3 and Z3. Using parts from this product line helps maintain emission standards and engine efficiency.

Product Description and Attributes

The Walker 350-34178 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving emission control accuracy. The 4-wire design includes a dedicated heater circuit and signal wires, enhancing sensor reliability. The wiring harness length of 29.84 inches offers sufficient reach for installation without excess slack. The radiused polygon male connector ensures a secure and stable electrical connection, reducing the risk of signal loss. The sensor mounts via a threaded fitting with an 18.0 mm diameter, matching OEM specifications for BMW M3 and Z3 models.

Common Applications and Issues Addressed

• Helps correct air-fuel mixture for improved engine performance
• Reduces harmful emissions by providing accurate oxygen level data
• Prevents engine misfires caused by faulty sensor readings
• Resolves check engine light triggers related to oxygen sensor faults
• Supports fuel economy by enabling proper combustion control

Installation Notes and Tips

When installing the Walker 350-34178 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. The 29.84-inch wiring harness length allows for flexible routing, but avoid sharp bends or contact with hot engine components. Tighten the sensor to the recommended torque specification to prevent leaks.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 350-34178 part number undergoes rigorous testing to comply with emission control requirements for BMW M3 and Z3 vehicles. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship.