Walker 250-23157 Oxygen Sensor - Upstream Left

Overview of Walker 250-23157 Oxygen Sensor for Nissan Frontier and Xterra

The Walker Products OE 250-23157 oxygen sensor is designed specifically for Nissan Frontier and Xterra models. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine control unit.

• Heated oxygen sensor with 3-wire configuration
• Specific fit for Nissan Frontier and Xterra
• 32.01 inches wiring harness length for flexible installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon female connector for secure connection
• Wire gauge measurement of 20 for reliable signal transmission
• Overall length of 35.55 inches for proper fitment

Detailed Features and Specifications

This Walker oxygen sensor (part number 250-23157) features a heated sensor element that allows for faster warm-up times and improved emissions control. The 3-wire design supports both sensor heating and signal output, ensuring consistent performance. The wiring harness length of 32.01 inches provides sufficient reach for installation in the engine bay of Nissan Frontier and Xterra vehicles. The sensor’s threaded mounting type with an 18.0 mm diameter allows for secure and precise placement in the exhaust system. Additionally, the radiused polygon female connector ensures a reliable electrical connection, minimizing the risk of signal loss or corrosion.

Walker Products OE Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM specifications. This oxygen sensor is engineered to match the exact fit and function required by Nissan Frontier and Xterra models, providing a direct replacement that supports proper emissions control and engine management systems.

Common Applications and Problem Resolution

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Resolves check engine light issues related to oxygen sensor faults
• Helps reduce harmful emissions by maintaining proper sensor function
• Prevents engine performance problems caused by faulty sensor signals
• Supports smooth engine idling and acceleration by providing correct data

Installation Notes and Tips

When installing the Walker 250-23157 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 exhaust leaks. Check for any wiring damage and secure the harness to prevent movement or abrasion.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. This part number 250-23157 is backed by Walker’s quality assurance protocols, providing confidence in its reliability for Nissan Frontier and Xterra applications.