Walker 250-23122 Oxygen Sensor - Upstream Left

Overview of Walker 250-23122 Oxygen Sensor for Nissan and Infiniti

The Walker 250-23122 oxygen sensor is designed specifically for select Nissan and Infiniti models, including the Pathfinder and QX4. 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 Nissan Pathfinder and Infiniti QX4
• 35.94-inch wiring harness length for flexible installation
• 20-gauge wire for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 39.49 inches for proper fitment

Detailed Product Description and Attributes

This Walker Products OE oxygen sensor (part number 250-23122) features a heated sensor element that allows for faster warm-up times and improved emissions monitoring. The sensor includes a 35.94-inch wiring harness with 20-gauge wires, providing durability and consistent electrical performance. Its 3-wire design supports both the sensor signal and heater circuit, essential for maintaining accurate readings under various operating conditions.

The connector is a radiused polygon shape with a male gender, ensuring a precise and secure fit with the vehicle’s wiring harness. The sensor mounts via a threaded connection with an 18.0 mm diameter, matching factory specifications for the Nissan Pathfinder and Infiniti QX4 models. The overall length of 39.49 inches accommodates proper placement within the exhaust system.

Walker Products OE Line Information

The Walker Products OE line focuses on delivering emission control components that meet original equipment specifications. This oxygen sensor is engineered to match the fit, form, and function of the factory-installed sensor, supporting compliance with emissions standards and maintaining vehicle performance. Choosing a Walker Products OE sensor helps ensure compatibility and reliability for Nissan and Infiniti vehicles.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing correct exhaust gas readings
• Reduces emissions by enabling effective catalytic converter operation
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket or wrench for installation
• Verify connector type matches the vehicle harness before installation
• Apply anti-seize compound on threads if not pre-coated
• Torque sensor to manufacturer specifications to prevent leaks

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and original equipment specifications. This part number 250-23122 undergoes rigorous testing to ensure durability and performance in Nissan Pathfinder and Infiniti QX4 applications. Warranty coverage details should be confirmed with the product documentation or supplier.