Walker 250-23503 Oxygen Sensor - Upstream

Overview of Walker 250-23503 Oxygen Sensor for Nissan Vehicles

The Walker 250-23503 oxygen sensor is designed specifically for Nissan D21 and Pathfinder 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 D21 and Pathfinder
• 68.43 inches wiring harness length for flexible installation
• Threaded mounting type with 12.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wire gauge measurement of 20 for reliable signal transmission
• Overall length of 71.97 inches for proper fitment

Detailed Product Features and Specifications

This Walker oxygen sensor (part number 250-23503) features a heated sensor type that allows for faster warm-up times and improved sensor response. The 3-wire design supports both signal and heater circuits, ensuring consistent operation under various engine conditions. The wiring harness length of 68.43 inches provides ample reach for installation in Nissan D21 and Pathfinder models. The sensor’s threaded mounting type with a 12.0 mm diameter thread ensures a secure and leak-free fit. The radiused polygon male connector is designed for a precise and reliable electrical connection, minimizing the risk of disconnection or corrosion. With a wire gauge measurement of 20, the sensor maintains signal integrity for accurate oxygen level readings.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM specifications. This oxygen sensor is part of the Walker Products OE series, which emphasizes durability and precise fitment for specific vehicle applications. Using a Walker Products OE sensor like the 250-23503 helps maintain factory-level performance and emission standards for Nissan D21 and Pathfinder vehicles.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensor readings
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate sensor data
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker 250-23503 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. Verify the connector type matches the vehicle harness before installation. Properly torque the sensor to manufacturer specifications to prevent leaks. Inspect wiring for damage and secure the harness to prevent strain or disconnection during operation.

Quality Assurance and Warranty

Walker oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 250-23503 part undergoes rigorous testing to comply with emission control requirements. While specific warranty details may vary, Walker Products OE parts typically come with a limited warranty covering defects in materials and workmanship.