Walker 250-24698 Oxygen Sensor - Downstream, Upstream, Upstream Left or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-24698

The Walker Products OE Oxygen Sensor 250-24698 is designed for precise emission control in select Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, and Saab vehicles. This heated oxygen sensor ensures accurate air-fuel mixture readings to maintain optimal engine performance and emissions compliance.

• Heated sensor type for faster response times
• Specific fit for models including Buick LaCrosse, Chevrolet Impala, GMC Canyon, and Saab 9-5
• Threaded mounting with 18.0 mm thread diameter
• 17.24-inch wiring harness length with 4 wires of 20 gauge
• Radiused polygon female connector for secure electrical connection
• Overall length of 20.79 inches for proper fitment

Detailed Product Features and Specifications

This oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire configuration supports both sensor heating and signal transmission. With a 17.24-inch wiring harness and a radiused polygon female connector, the sensor ensures a reliable and secure connection to the vehicle’s wiring system. The threaded mounting type with an 18.0 mm diameter thread provides a secure fit in the exhaust system. The overall length of 20.79 inches is engineered to match the specific fitment requirements of various models.

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 from the Walker Products OE line is engineered to provide consistent performance and durability, making it suitable for emission control systems in specific vehicle makes and models.

Compatible Vehicles and Common Applications

• Buick LaCrosse, Regal
• Cadillac STS
• Chevrolet Impala, Malibu, Express 3500
• GMC Canyon, Envoy, Envoy XL, Savana 3500, Sierra
• Hummer H3, H3T
• Isuzu i-280, i-290, i-350, i-370
• Saab 9-5, 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 malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor failure

Installation Notes and Tips

Ensure the vehicle is cool before installation to avoid burns. Use the correct tools to remove the old sensor and install the new one with the 18.0 mm threaded mounting. Verify the connector matches the radiused polygon female design for proper electrical connection. Avoid damaging the wiring harness during installation and confirm the sensor is securely threaded to prevent exhaust leaks.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, these sensors typically come with a limited warranty covering defects in materials and workmanship. Refer to the product documentation for exact warranty terms.