Walker 350-35021 Oxygen Sensor - Upstream

Overview of Walker 350-35021 Oxygen Sensor for Mazda 6

The Walker 350-35021 oxygen sensor is designed specifically for Mazda 6 models, 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.

• Wiring harness length: 19.21 inches
• Wire gauge measurement: 20 gauge
• Heated sensor type for faster response
• Specific fit for Mazda 6
• Five-wire configuration
• Radiused polygon female connector
• Thread diameter: 18.0 mm
• Overall length: 22.76 inches
• Threaded mounting type

Detailed Product Description

This Walker oxygen sensor (part number 350-35021) is engineered to meet the exact specifications required for Mazda 6 vehicles. The heated sensor design ensures quicker warm-up times, improving fuel efficiency and reducing emissions. With a 20-gauge wire and a five-wire setup, this sensor provides reliable signal transmission to the engine control unit. The radiused polygon female connector and threaded mounting type allow for a secure and precise fit, minimizing installation issues. The wiring harness length of 19.21 inches and overall length of 22.76 inches are optimized for the Mazda 6’s engine bay layout.

Walker Products Aftermarket offers a comprehensive line of emission control components designed to meet or exceed OEM standards. This product line focuses on delivering reliable, vehicle-specific sensors that support proper engine management and emissions compliance.

Common Applications and Issues Addressed

• Restores accurate oxygen level readings for Mazda 6 engines
• Helps resolve rough idling and poor fuel economy
• Reduces engine hesitation and misfires related to faulty sensors
• Supports emission system compliance and reduces exhaust pollutants
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket for threaded installation
• Verify connector type matches the vehicle harness (radiused polygon female)
• Do not over-tighten; follow torque specifications for 18.0 mm thread diameter
• Inspect wiring harness for damage before installation

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards, ensuring durability and consistent performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using the Walker 350-35021 oxygen sensor helps maintain the integrity of your Mazda 6’s emission control system.