Walker 250-23091 Oxygen Sensor - Downstream or Upstream

Overview of Walker 250-23091 Oxygen Sensor for Subaru Vehicles

The Walker 250-23091 oxygen sensor is designed specifically for Subaru Forester, Impreza, and Legacy models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated oxygen sensor with 3-wire configuration
• Specific fit for Subaru Forester, Impreza, and Legacy
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure wiring harness connection
• Wiring harness length of 13.31 inches and overall length of 16.85 inches
• 20 gauge wire for reliable signal transmission

Detailed Features and Specifications

This Walker Products OE oxygen sensor (part number 250-23091) features a heated sensor type that allows for quicker activation and more accurate readings under various operating conditions. The sensor includes a 3-wire setup with 20 gauge wiring, ensuring consistent electrical performance. Its radiused polygon male connector provides a precise and secure fit, reducing the risk of connection issues. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in compatible Subaru models. The wiring harness length of 13.31 inches and overall length of 16.85 inches are designed to match factory specifications for a direct replacement.

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 compatibility and performance tailored to Subaru vehicles. Using a Walker Products OE sensor helps maintain the integrity of the vehicle’s emission control system and supports compliance with environmental regulations.

Common Applications and Problem Resolution

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve check engine light issues related to oxygen sensor faults
• Improves fuel efficiency by providing precise exhaust gas data
• Reduces harmful emissions by ensuring proper catalytic converter function
• Prevents engine performance problems caused by faulty sensor readings

Installation Notes and Tips

When installing the Walker 250-23091 oxygen sensor, ensure the vehicle is compatible with this specific fit for Subaru Forester, Impreza, and Legacy models. Use appropriate tools to avoid damaging the 18.0 mm threaded mounting. Verify the radiused polygon male connector aligns correctly with the vehicle’s wiring harness. It is recommended to inspect the wiring and connector for any damage before installation to ensure optimal sensor performance.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable operation and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using this sensor supports maintaining the vehicle’s emission system integrity and helps meet regulatory requirements.