Walker 250-23156 Oxygen Sensor - Upstream Right

Overview of Walker 250-23156 Oxygen Sensor for Nissan Frontier and Xterra

The Walker 250-23156 oxygen sensor is designed specifically for Nissan Frontier and Xterra models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector for secure installation.

• Heated oxygen sensor with 3-wire configuration
• Specific fit for Nissan Frontier and Xterra vehicles
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length of 10.35 inches and overall length of 13.9 inches
• 20 gauge wire for reliable signal transmission
• Radiused polygon female connector for proper connection

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-23156) is engineered to meet the exact specifications of Nissan Frontier and Xterra models. The heated sensor type allows for faster warm-up times, improving emission control efficiency shortly after engine start. The sensor includes a 10.35-inch wiring harness and uses 20 gauge wire to maintain signal integrity. Its 3-wire design supports accurate oxygen level readings, which are critical for the vehicle’s engine control unit to adjust fuel mixture and reduce emissions. The radiused polygon female connector ensures a secure and precise fit, while the threaded mounting with an 18.0 mm diameter provides straightforward installation and reliable sensor positioning.

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, offering a direct replacement solution designed to maintain factory performance and emission standards for Nissan vehicles. Using Walker Products OE parts helps ensure compatibility and durability consistent with the original sensor installed by the manufacturer.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture adjustment
• Helps resolve engine performance issues related to faulty oxygen sensors
• Reduces emissions by providing precise feedback to the engine control unit
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by maintaining correct sensor operation

Installation Notes and Tips

When installing the Walker 250-23156 oxygen sensor, ensure the vehicle is compatible with this specific fitment for Nissan Frontier and Xterra models. Use proper tools to avoid damaging the 18.0 mm threaded mounting. Verify the connector shape and gender match the vehicle’s wiring harness to ensure a secure connection. It is recommended to replace the sensor when the engine is cool to prevent injury and to apply anti-seize compound on the threads if specified by the vehicle manufacturer.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards for emission control components. While specific warranty details for part number 250-23156 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability and performance.