Walker 350-34504 Oxygen Sensor - Upstream

Overview of Walker Oxygen Sensor 350-34504 for Mazda 626

The Walker Products Aftermarket oxygen sensor 350-34504 is designed specifically for the Mazda 626, providing precise emission control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector for secure installation.

• Heated oxygen sensor for accurate emissions feedback
• Specific fit for Mazda 626 models
• 10.16-inch wiring harness length with 4 wires of 20 gauge
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon female connector for reliable connection
• Overall length of 13.7 inches for proper fitment

Detailed Product Description

The Walker Products Aftermarket oxygen sensor part number 350-34504 is engineered to meet the exact specifications required by Mazda 626 vehicles. This heated sensor uses a 4-wire design with 20 gauge wiring to ensure fast warm-up times and accurate oxygen level readings. The 10.16-inch wiring harness length and radiused polygon female connector provide a secure and precise fit, minimizing installation issues. The threaded mounting type with an 18.0 mm diameter allows for straightforward replacement and compatibility with the vehicle’s exhaust system. The overall length of 13.7 inches ensures the sensor reaches the correct position for optimal performance.

Walker Products Aftermarket Line Information

Walker Products Aftermarket offers a range of emission control components designed to meet or exceed OEM standards. This product line focuses on delivering reliable sensors and parts that maintain vehicle emissions compliance and engine efficiency. The 350-34504 oxygen sensor is part of this line, providing a direct fit solution for Mazda 626 owners seeking a replacement sensor that aligns with factory specifications.

Common Applications and Issues Addressed

• Restores accurate air-fuel mixture readings for Mazda 626
• Helps resolve engine performance issues related to faulty oxygen sensors
• Reduces emissions by providing precise feedback to the engine control unit
• Prevents check engine light triggers caused by sensor failure
• Improves fuel economy by maintaining proper combustion control

Installation Notes and Tips

When installing the Walker oxygen sensor 350-34504 on a Mazda 626, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector shape and gender match the vehicle harness before installation. Properly torque the sensor to the manufacturer’s specifications to prevent exhaust leaks or sensor damage. Inspect wiring for any signs of wear or corrosion during replacement.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details for part number 350-34504 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship. This ensures reliable operation and peace of mind when replacing the oxygen sensor on your Mazda 626.