Walker 250-21026 Oxygen Sensor - Upstream

Overview of Walker Products OE Oxygen Sensor 250-21026

The Walker Products OE 250-21026 oxygen sensor is designed specifically for select Ford and Mazda vehicles, including the Aspire and RX-7 models. This non-heated oxygen sensor provides precise emissions control by monitoring exhaust gases and ensuring optimal engine performance.

• Wiring harness length: 12.32 inches
• Wire gauge measurement: 20 gauge
• Sensor type: Non-heated oxygen sensor
• Specific fit for Ford Aspire and Mazda RX-7
• Single wire configuration with radiused polygon male connector
• Thread diameter: 18.0 mm for threaded mounting
• Overall length: 15.87 inches

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor from the Walker Products OE series ensures compatibility and reliable performance for emission control systems in Ford and Mazda vehicles. The product line emphasizes precise fitment and durability, making it suitable for maintaining factory-level emissions standards.

Product Description and Specifications

This oxygen sensor (part number 250-21026) features a non-heated design with a single 20-gauge wire, making it a direct replacement for the original sensor in compatible vehicles. The wiring harness length of 12.32 inches and overall length of 15.87 inches provide adequate reach for installation in the exhaust system. The sensor mounts via an 18.0 mm threaded connection, ensuring secure and proper placement. The radiused polygon male connector facilitates a reliable electrical connection, reducing the risk of signal loss or corrosion.

Applications and Common Issues Addressed

• Helps maintain proper air-fuel mixture for Ford Aspire and Mazda RX-7 engines
• Reduces emissions by accurately monitoring oxygen levels in exhaust gases
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers caused by sensor failure
• Improves fuel efficiency by providing accurate feedback to the engine control unit

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate tools to avoid damaging the 18.0 mm threaded mounting
• Verify connector type matches the radiused polygon male connector on the sensor
• Check wiring harness length (12.32 inches) for proper routing and connection
• Follow vehicle-specific service manual instructions for sensor replacement

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. While specific warranty details for part number 250-21026 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship. This oxygen sensor supports compliance with emissions regulations for Ford Aspire and Mazda RX-7 vehicles.