Walker 350-34391 Oxygen Sensor - Downstream

Overview of Walker Oxygen Sensor 350-34391 for Mazda CX-7

The Walker 350-34391 oxygen sensor is designed specifically for the Mazda CX-7, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for Mazda CX-7 models
• 26.1-inch wiring harness length with 4 wires of 20 gauge
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for reliable connection
• Overall length of 29.65 inches for proper placement

Detailed Product Description

The Walker 350-34391 oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. This sensor is a heated type, which helps it reach operating temperature faster, improving fuel efficiency and reducing emissions. The 4-wire design with 20 gauge wiring ensures stable signal transmission and durability. Its 26.1-inch wiring harness length and 29.65-inch overall length allow for proper routing and fitment within the Mazda CX-7 engine bay. The sensor mounts via an 18.0 mm threaded connection, compatible with the vehicle’s exhaust system, and features a radiused polygon male connector to ensure a secure and precise electrical connection.

Common Applications and Issues Addressed

• Helps maintain optimal air-fuel mixture for efficient combustion
• Reduces harmful emissions by providing accurate oxygen level data
• Prevents engine performance issues related to faulty sensors
• Addresses check engine light triggers related to oxygen sensor faults
• Supports proper operation of the vehicle’s emission control system

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate tools for the 18.0 mm threaded sensor to prevent damage
• Verify connector type matches the vehicle’s wiring harness (radiused polygon male)
• Inspect wiring harness length (26.1 inches) for proper routing without tension
• Follow vehicle manufacturer torque specifications when installing the sensor

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet or exceed OEM specifications for fit, form, and function. The 350-34391 sensor undergoes rigorous testing to ensure durability and reliable performance in emission control applications. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Mazda CX-7 vehicles.