Walker 350-31028 Oxygen Sensor - Upstream

Overview of Walker 350-31028 Oxygen Sensor

The Walker 350-31028 oxygen sensor is designed specifically for select Ford and Mazda vehicles, including the Aspire and RX-7 models. This non-heated oxygen sensor features a threaded mounting type and a radiused polygon male connector, ensuring precise fitment and reliable performance.

• Wiring harness length: 12.32 inches
• Wire gauge measurement: 20 gauge
• Sensor type: Non heated
• Wire quantity: 1
• Connector shape: Radiused polygon
• Connector gender: Male
• Thread diameter: 18.0 mm
• Overall length: 15.87 inches
• Mounting type: Threaded

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing specific-fit emission control components. The line emphasizes compatibility and quality for replacement parts tailored to exact vehicle specifications, such as the Ford Aspire and Mazda RX-7. Using parts from this line helps maintain proper engine management and emissions control systems.

Product Description and Features

The Walker 350-31028 oxygen sensor is engineered to monitor exhaust oxygen levels accurately, helping the engine control module adjust fuel mixture for optimal combustion. Its non-heated design suits applications where heated sensors are not required. The sensor’s 18.0 mm threaded mounting ensures secure installation, while the radiused polygon male connector provides a reliable electrical connection. The 12.32-inch wiring harness length and 20 gauge wire support proper routing and signal integrity within the engine bay.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for Ford Aspire and Mazda RX-7 models
• Helps resolve engine performance issues related to incorrect air-fuel mixture
• Addresses check engine light triggers caused by faulty oxygen sensors
• Improves emissions control and reduces exhaust pollutants
• Prevents drivability problems such as rough idling or hesitation

Installation Notes and Tips

• Ensure the sensor thread diameter (18.0 mm) matches the vehicle’s exhaust port
• Use proper torque specifications to avoid sensor damage during installation
• Verify connector compatibility with the vehicle’s wiring harness (radiused polygon male)
• Inspect wiring harness routing to prevent heat or abrasion damage
• Disconnect the battery before installation to avoid electrical shorts

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet OEM standards for fit, form, and function. The 350-31028 part number is manufactured to provide consistent performance and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to ensure customer confidence in replacement emission control components.