Walker 350-33093 Oxygen Sensor - Upstream

Overview of Walker 350-33093 Oxygen Sensor

The Walker 350-33093 oxygen sensor is designed specifically for select BMW models, including the 325e, 325es, 535i, 635CSi, and 735i. 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 sensor type for faster response times
• Specific fit for BMW 325e, 325es, 535i, 635CSi, and 735i models
• Threaded mounting type with 18.0 mm thread diameter
• 17.24 inches wiring harness length with 3 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Overall length of 20.79 inches for proper installation

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The line emphasizes precise fitment and quality construction, ensuring compatibility and durability for emission sensors like the 350-33093 oxygen sensor.

Product Features and Specifications

The Walker 350-33093 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving emission readings shortly after engine start. It includes a 3-wire configuration with 20 gauge wiring, which supports accurate signal transmission. The sensor’s radiused polygon male connector ensures a secure and stable electrical connection, reducing the risk of signal loss or corrosion. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the designated exhaust port. With an overall length of 20.79 inches and a wiring harness length of 17.24 inches, this sensor fits precisely in the exhaust system of compatible BMW models.

Compatible Vehicles and Applications

• BMW 325e
• BMW 325es
• BMW 535i
• BMW 635CSi
• BMW 735i

This oxygen sensor is designed to replace the factory sensor in these specific BMW models, helping to maintain proper engine function and emissions compliance.

Common Issues Addressed by the Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor failure

Installation Notes and Tips

When installing the Walker 350-33093 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. Properly route the wiring harness to prevent contact with hot exhaust components or moving parts. Torque the sensor to manufacturer specifications to ensure a secure fit and prevent exhaust leaks.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet or exceed OEM standards for fit, form, and function. The 350-33093 part number undergoes rigorous quality control to ensure reliable performance in emission control systems. Warranty coverage details should be confirmed with the product documentation or supplier, as they may vary.