Walker 250-21031 Oxygen Sensor - Upstream

Overview of Walker 250-21031 Oxygen Sensor for Honda Civic

The Walker 250-21031 oxygen sensor is designed specifically for Honda Civic models, providing precise emission control monitoring. This non-heated sensor ensures accurate air-fuel mixture readings to help maintain optimal engine performance and emissions compliance.

• Wiring harness length: 15.28 inches
• Wire gauge measurement: 20 gauge
• Sensor type: Non heated
• Specific fit for Honda Civic
• Single wire configuration
• Radiused polygon male connector
• Thread diameter: 18.0 mm
• Overall length: 18.82 inches
• Threaded mounting type

Walker Products OE Brand Line Details

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality parts. Walker Products OE components are engineered to meet or exceed factory specifications, ensuring compatibility and reliable performance for emission control systems. The 250-21031 sensor reflects this commitment by matching the exact fit and function required for Honda Civic vehicles.

Product Description and Specifications

The Walker 250-21031 oxygen sensor features a non-heated design with a single 20-gauge wire, making it suitable for specific Honda Civic applications. Its 15.28-inch wiring harness length and radiused polygon male connector provide a secure and precise connection. The sensor mounts via an 18.0 mm threaded fitting, with an overall length of 18.82 inches to fit OEM locations accurately. This sensor is engineered to monitor exhaust oxygen levels, enabling the engine control unit to adjust fuel delivery for efficient combustion and reduced emissions.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for Honda Civic engines
• Helps resolve rough idling and poor fuel economy
• Reduces emissions by ensuring proper catalytic converter function
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine performance and drivability

Installation Notes and Tips

When installing the Walker 250-21031 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent seizing. Connect the radiused polygon male connector securely to the corresponding harness on the Honda Civic. Verify wiring harness length and routing to avoid tension or damage during operation.

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 250-21031 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability in emission control applications.