Walker 250-23159 Oxygen Sensor - Upstream

Overview of Walker 250-23159 Oxygen Sensor

The Walker 250-23159 oxygen sensor is designed specifically for select INFINITI and Nissan models, including the Altima, Frontier, G20, and Xterra. 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 INFINITI and Nissan vehicles
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wiring harness length of 11.34 inches and overall length of 14.88 inches
• Wire gauge measurement of 20 for reliable signal transmission

Detailed Product Features and Specifications

This Walker Products OE oxygen sensor (part number 250-23159) 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 a radiused polygon male connector, ensuring a precise and secure fit. The wiring harness length measures 11.34 inches, providing adequate reach for installation in the exhaust system. The sensor’s overall length is 14.88 inches, and it mounts via a threaded connection with an 18.0 mm thread diameter, compatible with the specified Nissan and INFINITI models.

Walker Products OE Line Information

The Walker Products OE line focuses on delivering original equipment quality parts designed to meet or exceed factory specifications. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with the original sensor installed in your INFINITI or Nissan vehicle. Using a Walker Products OE sensor helps maintain proper emissions control and engine efficiency.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Nissan Altima, Frontier, G20, and Xterra
• Helps resolve engine performance issues related to incorrect air-fuel mixture
• Reduces emissions by providing accurate exhaust gas readings
• Prevents check engine light triggers caused by sensor malfunctions
• Improves fuel economy by ensuring proper sensor feedback

Installation Notes and Tips

When installing the Walker 250-23159 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Confirm the radiused polygon male connector is securely attached to the vehicle’s wiring harness. Verify the wiring harness length and overall sensor length fit the application without strain or interference.

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, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain compliance with emissions regulations and supports reliable vehicle operation.