Walker 350-33012 Oxygen Sensor - Upstream Rear

Overview of Walker 350-33012 Oxygen Sensor for Mazda Millenia

The Walker 350-33012 oxygen sensor is designed specifically for the Mazda Millenia, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector for secure installation.

• Heated oxygen sensor with 3-wire configuration
• Specific fit for Mazda Millenia models
• Threaded mounting with 18.0 mm thread diameter
• Connector features a radiused polygon shape and female gender
• Wiring harness length of 11.34 inches and overall length of 14.88 inches
• Wire gauge measurement of 20 for reliable signal transmission

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-33012) is engineered to meet the exact specifications required by Mazda Millenia vehicles. The sensor’s heated design allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. With a 3-wire setup and a wire gauge of 20, it ensures accurate oxygen level readings for the engine control unit. The threaded mounting type with an 18.0 mm diameter provides a secure fit, while the radiused polygon female connector guarantees proper electrical connection. The wiring harness length of 11.34 inches and overall length of 14.88 inches are optimized for direct replacement without modification.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a balance of durability and performance tailored for specific vehicle applications like the Mazda Millenia. The product line emphasizes precise fitment and quality materials to support emission compliance and engine management systems.

Common Applications and Issues Addressed

• Restores accurate air-fuel mixture readings for Mazda Millenia engines
• Helps resolve rough idling and poor fuel economy
• Reduces emissions by ensuring proper catalytic converter function
• Eliminates check engine light codes related to oxygen sensor failure
• Prevents engine performance issues caused by faulty sensor signals

Installation Notes and Tips

When installing the Walker 350-33012 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Confirm the connector matches the radiused polygon female shape for a secure connection. It is recommended to apply anti-seize compound on the threads to facilitate future removal. Verify sensor wiring and routing to prevent interference with moving parts or heat sources.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet emission control standards and durability requirements. The 350-33012 part number is manufactured to provide consistent performance and reliability for Mazda Millenia vehicles. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region.