Walker 250-54081 Oxygen Sensor - Upstream

Overview of Walker 250-54081 Oxygen Sensor for Mazda Vehicles

The Walker 250-54081 oxygen sensor is designed specifically for select Mazda models, providing precise emissions control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector for secure installation.

• Heated oxygen sensor with 4 wires for accurate readings
• Specific fitment for Mazda vehicles ensuring compatibility
• 21.18-inch wiring harness length for flexible installation
• 20 gauge wire measurement for durability and signal integrity
• Thread diameter of 18.0 mm with threaded mounting type
• Radiused polygon female connector for reliable connection
• Overall length of 24.72 inches to accommodate various engine layouts

Detailed Product Description and Attributes

This Walker Products OE oxygen sensor (part number 250-54081) is engineered to meet the exact specifications required by Mazda vehicles. The sensor is heated, which allows it to reach operating temperature quickly, improving emissions control and fuel efficiency. It includes four wires with a 20 gauge measurement, ensuring consistent electrical performance and durability. The wiring harness length of 21.18 inches and overall length of 24.72 inches provide ample reach for installation in the engine bay. The sensor mounts via an 18.0 mm threaded connection, compatible with the original equipment setup. The connector features a radiused polygon shape with a female gender, designed to fit securely with the vehicle’s wiring harness.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory standards. This oxygen sensor is part of that line, ensuring it matches the fit, form, and function of the original sensor installed on Mazda vehicles. Using a Walker Products OE sensor helps maintain proper emissions control and engine management system performance.

Common Applications and Issues Addressed

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

Installation Notes and Tips

When installing the Walker 250-54081 oxygen sensor, ensure the engine is cool to avoid burns. Use the correct 18.0 mm socket for sensor removal and installation. Verify the connector’s radiused polygon female shape matches the vehicle harness before securing. Avoid twisting or damaging the wiring harness during installation. It is recommended to apply anti-seize compound on the threads if not pre-applied to facilitate future removal.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. This part is designed to provide reliable operation under normal driving conditions. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region.