Walker 350-34013 Oxygen Sensor - Upstream or Upstream Left

Overview of Walker 350-34013 Oxygen Sensor

The Walker 350-34013 oxygen sensor is designed specifically for select BMW and Mercedes-Benz models, including the C43 AMG, C280, CLK320, CLK430, M3, SL500, and Z3. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for BMW and Mercedes-Benz models listed
• Threaded mounting type with 18.0 mm thread diameter
• 29.84-inch wiring harness length with 20-gauge wire
• Radiused polygon male connector for secure connection
• Overall length of 33.39 inches for proper installation

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 precise fitment and durability, ensuring that parts like the 350-34013 oxygen sensor integrate seamlessly with the vehicle’s existing systems for consistent performance and emissions compliance.

Technical Description and Attributes

The Walker 350-34013 oxygen sensor features a heated sensor type with a 4-wire configuration, allowing for faster sensor warm-up and improved accuracy in measuring exhaust oxygen levels. The sensor’s wiring harness length of 29.84 inches and overall length of 33.39 inches provide sufficient reach for installation in the specified BMW and Mercedes-Benz models. The 20-gauge wire ensures durability and resistance to electrical interference. The sensor mounts via a threaded connection with an 18.0 mm diameter, and the radiused polygon male connector guarantees a secure and precise fit, reducing the risk of connection issues.

Common Applications and Problem Resolution

• Restores accurate air-fuel ratio readings for BMW M3 and Mercedes-Benz SL500
• Resolves check engine light issues related to oxygen sensor faults
• Improves fuel efficiency and reduces emissions on C43 AMG and CLK430 models
• Eliminates rough idling and engine hesitation caused by faulty sensors
• Ensures compliance with emissions standards for Z3 and C280 vehicles

Installation Notes and Tips

When installing the Walker 350-34013 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 4-wire heated sensor requires proper wiring connections to function correctly. After installation, clear any diagnostic trouble codes and perform a test drive to confirm sensor operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 350-34013 part number undergoes rigorous testing to comply with OEM specifications. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship, supporting long-term use in BMW and Mercedes-Benz vehicles.