Walker 250-25066 Oxygen Sensor - Upstream

Overview of Walker Products OE Oxygen Sensor 250-25066

The Walker Products OE Oxygen Sensor 250-25066 is designed specifically for Mazda 6 and CX-7 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 6 and CX-7 vehicles
• 29.06-inch wiring harness length for proper installation
• 20 gauge wire measurement with 5 wires for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 32.6 inches for correct positioning

Detailed Product Description

This oxygen sensor from Walker Products OE is engineered to meet the exact specifications required by Mazda 6 and CX-7 models. Featuring a heated sensor element, it provides quicker warm-up times compared to non-heated sensors, improving fuel efficiency and reducing emissions sooner after engine start. The 5-wire design with 20 gauge wiring ensures stable and accurate data transmission to the vehicle’s engine control unit. The radiused polygon male connector and threaded mounting type with an 18.0 mm diameter allow for a secure and precise fit, minimizing installation issues. The wiring harness length of 29.06 inches and overall length of 32.6 inches are tailored to fit the specific routing and mounting points on compatible Mazda vehicles.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with Mazda’s original components. The OE designation indicates that this sensor is designed for direct replacement without modification, supporting reliable emissions control and engine management systems.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensor readings
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate exhaust gas data
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker Products OE oxygen sensor 250-25066, ensure the vehicle is compatible with Mazda 6 or CX-7 models. Use proper tools to avoid damaging the threaded mounting or connector. Verify the wiring harness length and connector shape match the vehicle’s harness to ensure a secure connection. It is recommended to replace the sensor when the engine is cool to prevent burns and to apply anti-seize compound on the threads if not pre-applied.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details for part number 250-25066 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability.