Walker 350-34165 Oxygen Sensor - Upstream Front

Overview of Walker 350-34165 Oxygen Sensor for Mazda 626 and Millenia

The Walker 350-34165 oxygen sensor is designed specifically for select Mazda models, including the 626 and Millenia. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fitment for Mazda 626 and Millenia models
• 21.18-inch wiring harness length with 4 wires
• 20 gauge wire for reliable signal transmission
• Radiused polygon female connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 24.72 inches for proper installation

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34165) is engineered to meet the exact specifications required by Mazda 626 and Millenia 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 21.18-inch wiring harness with four 20-gauge wires, ensuring consistent and accurate data transmission to the vehicle’s engine control unit (ECU). The radiused polygon female connector is designed for a secure and precise fit, minimizing the risk of connection issues. Its threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, providing a direct replacement solution tailored for specific vehicle applications like the Mazda 626 and Millenia. The product line emphasizes compatibility and durability to support emission system efficiency and regulatory compliance.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces harmful emissions by providing accurate oxygen level readings
• Prevents engine performance issues related to faulty sensors
• Addresses check engine light triggers caused by sensor failure
• Improves fuel economy by ensuring optimal sensor operation

Installation Notes and Tips

When installing the Walker 350-34165 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector type matches the vehicle’s harness to ensure a secure connection. Thread the sensor carefully into the exhaust port to prevent cross-threading. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper sensor operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. The 350-34165 part undergoes rigorous testing to ensure durability and reliable performance in emission control systems. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Mazda 626 and Millenia vehicles.