Walker 350-341018 Oxygen Sensor - Downstream

Overview of Walker Oxygen Sensor 350-341018

The Walker 350-341018 oxygen sensor is designed specifically for select BMW and Mini models, including the 220i, Cooper, Cooper Clubman, Cooper Countryman, i8, X1, and X2. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance through precise air-fuel mixture measurement.

• Heated sensor type for faster response times
• Specific fit for BMW and Mini vehicles
• Threaded mounting with 18.0 mm thread diameter
• 21.65-inch wiring harness length with 4 wires
• Radiused polygon male connector for secure connection
• Overall length of 24.60 inches for proper installation
• 20 gauge wire for reliable signal transmission

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components engineered to meet or exceed OEM specifications. The line emphasizes precise fitment and durability, making it suitable for maintaining factory-level emissions performance in BMW and Mini vehicles.

Product Features and Specifications

The Walker 350-341018 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its 4-wire design supports both the sensor signal and heater circuit, ensuring consistent performance. The radiused polygon male connector provides a secure and reliable electrical connection, while the threaded mounting type with an 18.0 mm diameter ensures proper installation and sealing in the exhaust system. The wiring harness length of 21.65 inches and overall length of 24.60 inches accommodate the specific routing requirements of compatible BMW and Mini models.

Common Applications and Problem Resolution

• Restores accurate oxygen sensing for proper air-fuel mixture control
• 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
• Supports fuel economy improvements by maintaining sensor responsiveness

Installation Notes and Tips

When installing the Walker 350-341018 oxygen sensor, ensure the vehicle is compatible with the specific fitment for BMW and Mini models listed. Use appropriate tools to avoid damaging the threaded mounting or connector. Verify the wiring harness routing matches factory specifications to prevent strain or disconnection. It is recommended to replace the sensor when the engine is cool to avoid burns and to apply anti-seize compound on the threads if not pre-applied.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. The 350-341018 part number 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.