Walker 350-34025 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker 350-34025 Oxygen Sensor

The Walker 350-34025 oxygen sensor is designed specifically for select BMW models, including the 325i, 325is, 530i, 540i, 740i, 740iL, and M3. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data.

• Heated sensor type for faster response times
• Specific fit for BMW 325i, 325is, 530i, 540i, 740i, 740iL, and M3 models
• 10.55-inch wiring harness length with 4 wires of 20 gauge
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon female connector for secure connection
• Overall length of 14.09 inches for proper installation

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34025) is engineered to meet the exact specifications of various BMW vehicles. Featuring a heated sensor element, it provides quicker warm-up times compared to non-heated sensors, which helps reduce emissions during cold starts. The sensor includes a 10.55-inch wiring harness with four 20-gauge wires, ensuring reliable electrical connectivity. Its radiused polygon female connector and threaded mounting type with an 18.0 mm thread diameter allow for a secure and precise fit. The overall length of 14.09 inches supports proper placement within the exhaust system.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, designed to provide dependable performance and compatibility with specific vehicle applications. By adhering to strict manufacturing and quality control processes, Walker ensures that this sensor integrates seamlessly with the vehicle’s emission system.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve rough idling and poor engine performance
• Reduces excessive emissions and improves fuel efficiency
• Eliminates check engine light codes related to oxygen sensor faults
• Prevents failed emissions tests due to sensor malfunction

Installation Notes and Tips

When installing the Walker 350-34025 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness or connector. Verify the connector’s radiused polygon shape and female gender match the vehicle’s harness for a proper connection. Thread the sensor carefully into the exhaust port to the specified 18.0 mm diameter to prevent cross-threading. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet emission control standards and vehicle-specific requirements. This part number 350-34025 is manufactured to provide consistent performance and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to ensure customer confidence in the product.