Walker 250-24491 Oxygen Sensor

Overview of Walker Products OE Oxygen Sensor 250-24491

The Walker Products OE Oxygen Sensor 250-24491 is designed for precise emission control in select Buick, Cadillac, Chevrolet, GMC, Hummer, and Saab vehicles. This heated oxygen sensor features a specific fitment to ensure optimal performance and compatibility with various models including the Chevrolet Silverado 1500, GMC Sierra 2500 HD, and Cadillac Escalade.

• Heated oxygen sensor with 4-wire design for accurate readings
• Specific fitment for select GM and Saab models
• 12.52-inch wiring harness length with 20 gauge wire
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Overall length of 16.06 inches for proper installation

Detailed Product Features and Specifications

This Walker oxygen sensor (part number 250-24491) is engineered with a heated sensor element to provide faster response times and improved fuel management. The 4-wire configuration includes two wires for the heater circuit and two for the sensor signal, ensuring reliable operation under various engine conditions. The wiring harness length of 12.52 inches and 20 gauge wire size support durability and ease of routing during installation. The sensor’s threaded mounting type with an 18.0 mm diameter allows for a secure fit in the exhaust system. The radiused polygon male connector ensures a precise and stable electrical connection, reducing the risk of signal loss or corrosion.

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, providing a direct replacement solution designed specifically for the vehicle makes and models listed. Using a Walker Products OE sensor helps maintain the integrity of the vehicle’s emission control system and supports compliance with environmental regulations.

Compatible Vehicles and Common Applications

• Buick 9-5 and Verano
• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche 2500, Camaro, Colorado, Corvette, Express 1500/2500/3500, Silverado 1500/2500/3500, Suburban 1500/2500, Trailblazer
• GMC Canyon, Envoy, Sierra 1500/2500/3500, Yukon, Yukon XL 1500/2500
• Hummer H2, H3, H3T
• Saab 9-7x

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor failure
• Engine performance problems such as rough idling or hesitation
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old oxygen sensor carefully using the appropriate oxygen sensor socket. Verify the thread size (18.0 mm) matches the exhaust port. Connect the radiused polygon male connector securely to the vehicle’s wiring harness. Avoid twisting or stretching the wiring harness during installation. After installation, clear any diagnostic trouble codes and verify sensor operation with a scan tool.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet original equipment standards for fit, form, and function. This part number 250-24491 undergoes rigorous testing to ensure durability and reliable performance in emission control systems. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region.