Walker 250-24488 Oxygen Sensor - Downstream Left or Downstream Rear

Overview of Walker 250-24488 Oxygen Sensor

The Walker 250-24488 oxygen sensor is designed specifically for select Chevrolet, GMC, Pontiac, and Saturn vehicles. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

• Heated sensor type for faster response times
• Specific fit for Chevrolet, GMC, Pontiac, and Saturn models
• 20.39-inch wiring harness length with 4 wires
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Overall length of 23.94 inches for proper installation
• Wire gauge measurement of 20 for durability and signal integrity

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. The 250-24488 oxygen sensor from this line is engineered to provide reliable emissions control and maintain vehicle performance consistent with the original sensor installed by the manufacturer.

Product Description and Features

This Walker oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving sensor accuracy and reducing emissions during cold starts. The sensor’s 4-wire configuration supports both the heating element and signal transmission, ensuring stable and precise readings. Its threaded mounting type with an 18.0 mm diameter allows for secure installation in the exhaust system. The radiused polygon male connector is designed for a specific fit, preventing loose connections and electrical issues. With a wiring harness length of 20.39 inches and an overall length of 23.94 inches, this sensor fits properly in the exhaust system of compatible vehicles.

Compatible Vehicles and Applications

• Chevrolet Aura and G6 models
• GMC Sierra 1500 HD, 2500, 3500, and their Classic and HD variants
• Chevrolet Silverado 1500 HD, 2500, 3500, including Classic and HD versions
• Chevrolet Suburban 1500 and 2500
• GMC Yukon XL 2500
• Pontiac and Saturn models as specified

Common Issues Addressed by This Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture data
• Increased emissions and failed emissions tests
• Engine performance problems such as rough idling or hesitation
• Sensor heater circuit malfunctions causing delayed sensor response

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the exhaust threads. Verify the connector type matches the vehicle harness to ensure proper electrical connection. Follow torque specifications for the threaded mounting to prevent leaks or sensor damage. It is recommended to inspect wiring and connectors for corrosion or damage during replacement.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. The 250-24488 part number undergoes rigorous testing to comply with emissions regulations. Warranty coverage details should be confirmed with the product documentation or supplier.