Walker 250-24950 Oxygen Sensor - Downstream Left or Downstream Right

Overview of Walker Products OE Oxygen Sensor 250-24950

The Walker Products OE Oxygen Sensor 250-24950 is designed specifically for select Buick, Chevrolet, GMC, Isuzu, and Saab models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for models including Buick Rainier, Chevrolet Trailblazer, GMC Envoy, and more
• Threaded mounting type with 18.0 mm thread diameter
• Four-wire design with 20 gauge wire for reliable signal transmission
• Radiused polygon male connector for secure electrical connection
• Wiring harness length of 11.34 inches and overall length of 14.88 inches

Detailed Product Description

This oxygen sensor from Walker Products OE is engineered to meet the exact specifications of various GM and Isuzu vehicles, including the Buick Rainier, Chevrolet Trailblazer EXT, GMC Envoy XL, and Saab 9-7x. The heated sensor element allows for quicker activation and improved fuel efficiency by providing accurate oxygen level readings to the engine control unit. The four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent operation under different driving conditions. The radiused polygon male connector and threaded mounting type with an 18.0 mm diameter provide a secure and precise fit, reducing the risk of leaks or electrical issues.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts designed to match or exceed factory specifications. This oxygen sensor is part of that line, offering a direct replacement solution that maintains the integrity of the vehicle’s emissions system. Using a Walker Products OE sensor helps ensure compatibility and durability consistent with the original sensor installed by the manufacturer.

Common Applications and Issues Addressed

• Restores proper air-fuel mixture readings for improved engine performance
• Helps resolve check engine light codes related to oxygen sensor failure
• Reduces emissions by providing accurate exhaust gas data
• Prevents rough idling and poor fuel economy caused by faulty sensors
• Supports smooth operation of the vehicle’s catalytic converter system

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket for threaded removal and installation
• Verify connector type matches the vehicle’s wiring harness (radiused polygon male)
• Do not over-tighten; torque to manufacturer specifications for the 18.0 mm thread
• Inspect wiring for damage before installation to prevent electrical faults

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details may vary, these sensors typically come with a limited warranty covering defects in materials and workmanship. Using part number 250-24950 guarantees a sensor designed for precise fitment and function in Buick, Chevrolet, GMC, Isuzu, and Saab vehicles.