Walker 250-25029 Oxygen Sensor - Upstream

Overview of Walker Products OE Oxygen Sensor 250-25029

The Walker Products OE Oxygen Sensor 250-25029 is designed specifically for Mazda 3 and Mazda 5 models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

• Heated sensor type for faster response times
• Specific fit for Mazda 3 and Mazda 5 vehicles
• Threaded mounting type with 18.0 mm thread diameter
• 17.24 inches wiring harness length with 5 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Overall length of 20.79 inches for proper installation

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-25029) is engineered to meet the exact specifications of Mazda 3 and Mazda 5 models. Featuring a heated sensor element, it provides quicker warm-up times, which helps reduce emissions during cold starts. The sensor includes a 17.24-inch wiring harness with five 20-gauge wires, ensuring reliable electrical connectivity. Its radiused polygon male connector is designed for a secure and precise fit, minimizing the risk of disconnection or signal loss. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation and compatibility with factory mounting points.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that match or exceed factory specifications. This oxygen sensor is part of that line, ensuring it meets the durability and performance standards required for emission control systems in Mazda vehicles. Using a Walker Products OE sensor helps maintain the integrity of your vehicle’s emissions system and supports compliance with environmental regulations.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve rough idling and engine hesitation caused by faulty sensors
• Reduces increased emissions and failed emissions tests
• Prevents poor fuel economy linked to sensor malfunction
• Eliminates check engine light codes related to oxygen sensor faults

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old sensor carefully using an oxygen sensor socket. Verify the connector type matches the vehicle harness before installation. Thread the new sensor by hand initially to avoid cross-threading, then tighten to manufacturer torque specifications. Reconnect the wiring harness securely to the radiused polygon male connector.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, these sensors typically come with a limited warranty covering defects in materials and workmanship. Using this sensor helps maintain your Mazda 3 or Mazda 5’s emission system reliability and compliance.