Walker 250-23521 Oxygen Sensor - Downstream Front

Overview of Walker 250-23521 Oxygen Sensor for Nissan Maxima

The Walker 250-23521 oxygen sensor is designed specifically for Nissan Maxima models, providing precise emission control and engine performance monitoring. This heated oxygen sensor ensures accurate readings for optimal fuel efficiency and reduced emissions.

• Heated oxygen sensor with 3-wire configuration
• Specific fit for Nissan Maxima vehicles
• Threaded mounting type with 12.0 mm thread diameter
• Radiused polygon female connector for secure wiring harness connection
• Wiring harness length of 16.65 inches and overall length of 20.2 inches
• Wire gauge measurement of 20 for reliable electrical performance

Detailed Product Features and Specifications

This Walker Products OE oxygen sensor (part number 250-23521) is engineered with a heated sensor element to provide faster response times and improved accuracy in measuring oxygen levels in the exhaust gases. The sensor features a 3-wire design, which includes a heating element to maintain optimal operating temperature. Its specific fitment for Nissan Maxima models ensures compatibility and ease of installation. The sensor mounts via a threaded connection with a 12.0 mm diameter, providing a secure and leak-free fit. The wiring harness length of 16.65 inches and overall length of 20.2 inches allow for proper routing and connection within the vehicle's emission system. The radiused polygon female connector is designed to match the original equipment specifications, ensuring a reliable electrical connection.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is part of that line, ensuring it matches the fit, form, and function required by Nissan Maxima 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 Issues Addressed

• Restores accurate oxygen level readings for proper air-fuel mixture control
• Helps resolve engine performance issues such as rough idling or hesitation
• Reduces emissions by ensuring efficient catalytic converter operation
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel economy by maintaining optimal combustion conditions

Installation Notes and Tips

When installing the Walker 250-23521 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 12.0 mm threaded sensor to prevent damage. Verify the wiring harness connector matches the radiused polygon female design for a secure fit. Follow torque specifications recommended by Nissan for proper sensor mounting. It is advisable to inspect the wiring and connector for any damage before installation to ensure reliable sensor operation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. This part number 250-23521 undergoes rigorous testing to comply with OEM specifications. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Nissan Maxima vehicles.