Walker 350-35054 Oxygen Sensor - Downstream, Upstream or Upstream Left

Overview of Walker 350-35054 Oxygen Sensor

The Walker 350-35054 oxygen sensor is designed specifically for select BMW and Mercedes-Benz models, including the 535i, 535i xDrive, 740i, 740Li, CLK63 AMG, E320, and X6. 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 5-wire configuration
• Specific fit for BMW and Mercedes-Benz models
• 48.74 inches wiring harness length for flexible installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wire gauge measurement of 20 for reliable signal transmission
• Overall length of 52.28 inches

Detailed Product Features and Specifications

This Walker Products Aftermarket oxygen sensor (part number 350-35054) features a heated sensor type that allows for faster warm-up times and improved emissions monitoring. The sensor includes a 5-wire design, which supports both the sensor signal and heater circuit, ensuring consistent operation under various driving conditions. The wiring harness length of 48.74 inches provides ample reach for installation in the engine bay, while the 20-gauge wire ensures durability and signal integrity.

The sensor’s mounting type is threaded with an 18.0 mm diameter, compatible with the exhaust system fittings on the specified BMW and Mercedes-Benz models. The connector is a radiused polygon shape with a male gender, designed to fit securely with the vehicle’s wiring harness, reducing the risk of disconnection or corrosion.

Walker Products Aftermarket Line Information

The Walker Products Aftermarket line focuses on providing reliable emission control components that meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct replacement solution engineered for specific vehicle applications. The product line emphasizes quality construction and precise fitment to maintain vehicle emissions compliance and engine efficiency.

Common Applications and Problem Resolution

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Resolves check engine light issues related to oxygen sensor faults
• Improves fuel economy by ensuring correct sensor feedback
• Reduces harmful emissions by maintaining proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Walker 350-35054 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 shape and wire count match the vehicle’s harness before installation. Properly torque the sensor to manufacturer specifications to prevent exhaust leaks. It is recommended to inspect wiring and connectors for damage during replacement.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. This part number 350-35054 undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region.