Walker 350-34030 Oxygen Sensor - Upstream

Overview of Walker 350-34030 Oxygen Sensor for BMW Models

The Walker 350-34030 oxygen sensor is designed specifically for select BMW vehicles, including the 325i, 325is, 325iX, and 528e models. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data to the engine control unit.

• Heated oxygen sensor with threaded mounting type
• Specific fit for BMW 325i, 325is, 325iX, and 528e
• 21.77-inch wiring harness length with 4 wires of 20 gauge
• Radiused polygon male connector for secure connection
• 18.0 mm thread diameter and 25.31-inch overall length

Detailed Features and Specifications

This oxygen sensor from Walker Products Aftermarket is engineered with a 21.77-inch wiring harness, providing sufficient length for installation in the designated BMW models. The sensor uses 20 gauge wire across four wires, supporting reliable electrical signals. Its heated sensor type allows for faster warm-up times, improving emissions control during cold starts. The connector features a radiused polygon shape with a male gender, ensuring a precise and secure fit. The sensor mounts via an 18.0 mm threaded connection, with an overall length of 25.31 inches to accommodate the specific engine bay layout of the BMW 325i, 325is, 325iX, and 528e.

Walker Products Aftermarket Line Information

The Walker Products Aftermarket line focuses on providing replacement emission control components that meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct fit and reliable performance for BMW vehicles. The product line emphasizes compatibility and durability, making it suitable for maintaining factory-level emissions standards.

Common Applications and Problem Resolution

• Restores accurate oxygen sensing for proper air-fuel mixture adjustment
• Helps resolve engine performance issues related to faulty oxygen sensors
• Reduces emissions by ensuring correct sensor feedback to the ECU
• Addresses check engine light triggers caused by sensor failure
• Improves fuel efficiency by maintaining optimal combustion

Installation Notes and Tips

When installing the Walker 350-34030 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer. Verify the radiused polygon male connector aligns correctly with the vehicle harness to avoid damage. The wiring harness length of 21.77 inches provides flexibility during installation but avoid excessive bending or stretching of wires.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for emission control components. While specific warranty details for part number 350-34030 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to ensure long-term reliability.