Walker 350-64019 Oxygen Sensor - Upstream

Overview of Walker 350-64019 Oxygen Sensor for Mazda 3

The Walker 350-64019 oxygen sensor is designed specifically for Mazda 3 models, providing precise emission control and engine performance monitoring. This heated oxygen sensor ensures accurate air-fuel mixture readings to help maintain optimal engine efficiency.

• Heated sensor type for faster response times
• Specific fitment for Mazda 3 vehicles
• 15.67-inch wiring harness length for convenient installation
• 20 gauge wire measurement with 4 wires for reliable signal transmission
• Radiused polygon female connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 19.21 inches for proper placement

Walker Products Aftermarket Line Details

The Walker Products Aftermarket line focuses on providing replacement emission control components that meet or exceed OEM specifications. This oxygen sensor from the Walker Products Aftermarket range is engineered to deliver consistent performance and durability, ensuring compatibility and reliable operation within Mazda 3 emission systems.

Product Description and Technical Specifications

The Walker 350-64019 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its 4-wire design includes a dedicated heater circuit and signal wires, enhancing sensor accuracy and longevity. The 15.67-inch wiring harness length offers flexibility during installation, while the radiused polygon female connector ensures a secure and corrosion-resistant connection. The sensor mounts via an 18.0 mm threaded fitting, compatible with the Mazda 3 exhaust system, and the overall length of 19.21 inches accommodates proper sensor positioning for accurate readings.

Common Applications and Issues Addressed

• Restores accurate oxygen level readings for engine control modules
• Helps resolve rough idling and poor fuel economy
• Reduces emissions by maintaining proper air-fuel mixture
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine performance and drivability

Installation Notes and Tips

• Ensure vehicle compatibility with Mazda 3 models before installation
• Disconnect the battery prior to sensor replacement to avoid electrical issues
• Use appropriate tools for threaded sensor removal and installation
• Do not over-tighten the sensor to prevent damage to threads
• Verify connector engagement with the radiused polygon female plug for secure fit

Quality Assurance and Warranty

Walker oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 350-64019 part number is backed by Walker Products Aftermarket's quality assurance processes. Please refer to Walker's official warranty policy for specific coverage details.