Walker 250-23135 Oxygen Sensor - Upstream Left

Overview of Walker 250-23135 Oxygen Sensor for Nissan and Infiniti

The Walker 250-23135 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
• 34.57 inches wiring harness length for flexible installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wire gauge measurement of 20 for reliable signal transmission
• Overall length of 38.11 inches for proper fitment

Detailed Features and Specifications

This Walker Products OE oxygen sensor (part number 250-23135) is engineered with a heated sensor element to provide faster response times and improved fuel efficiency. The 3-wire design supports both sensor heating and signal output, ensuring consistent performance under various operating conditions. The wiring harness length of 34.57 inches allows for convenient routing within the engine bay, while the 20-gauge wire ensures durability and signal integrity. The sensor’s threaded mounting type with an 18.0 mm diameter thread provides a secure and precise fit in the exhaust system. Additionally, the radiused polygon male connector is designed to match factory specifications, facilitating straightforward installation without modifications.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering emission control components that meet or exceed original equipment specifications. This oxygen sensor is part of that line, ensuring compatibility and reliable operation for Nissan Pathfinder and Infiniti QX4 vehicles. Walker Products OE parts are designed to integrate seamlessly with factory systems, supporting emissions compliance and engine management requirements.

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 economy by providing precise exhaust gas readings
• Reduces emissions by maintaining optimal combustion conditions
• Prevents engine performance problems caused by faulty sensor signals

Installation Notes and Tips

When installing the Walker 250-23135 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent seizing. Verify the radiused polygon male connector aligns correctly with the vehicle’s wiring harness connector to avoid damage. The wiring harness length of 34.57 inches provides flexibility, but routing should avoid excessive heat or moving parts. Proper torque specifications should be followed to secure the sensor without over-tightening.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. This part number 250-23135 undergoes rigorous testing to comply with emissions regulations and OEM fitment requirements. Warranty coverage details should be confirmed with the product documentation or supplier, reflecting Walker’s commitment to quality and customer satisfaction.