Walker 250-23131 Oxygen Sensor

Overview of Walker 250-23131 Oxygen Sensor

The Walker 250-23131 oxygen sensor is designed specifically for select Nissan and INFINITI models, including the Altima, Maxima, Pathfinder, Sentra, I35, Pickup, 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 design for precise readings
• Specific fit for Nissan and INFINITI vehicles
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure electrical connection
• Wiring harness length of 17.24 inches and overall length of 20.79 inches
• Wire gauge measurement of 20 for durability and signal integrity

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-23131) is engineered to meet the exact specifications of your vehicle’s original equipment. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings, which are critical for maintaining proper air-fuel mixture and reducing emissions. The sensor’s 3-wire configuration supports efficient heating and signal transmission, while the radiused polygon male connector ensures a reliable and secure fit. With a threaded mounting type and an 18.0 mm thread diameter, installation aligns with factory standards for Nissan and INFINITI models such as the Altima, Maxima, Pathfinder, Sentra, I35, Pickup, and QX4.

Walker Products OE Brand Line

The Walker Products OE line focuses on delivering emission control components that match original equipment quality and fitment. This oxygen sensor is part of that line, providing a direct replacement solution that maintains the integrity of your vehicle’s emissions system. Walker Products OE parts are designed to meet or exceed OEM standards, ensuring compatibility and performance for Nissan and INFINITI vehicles.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper engine management
• Helps resolve rough idling and poor fuel economy caused by faulty sensors
• Reduces emissions by ensuring correct air-fuel mixture adjustments
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine performance and drivability

Installation Notes and Tips

When installing the Walker 250-23131 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the connector’s radiused polygon male shape matches the vehicle harness for a secure connection. It is recommended to apply anti-seize compound on the threads to facilitate future removal. Follow vehicle-specific service manual instructions for torque specifications and sensor location.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. This part number 250-23131 undergoes rigorous testing to comply with OEM specifications. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship, providing confidence in the product’s longevity and function.