Walker 350-34939 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Overview of Walker Oxygen Sensor 350-34939

The Walker 350-34939 oxygen sensor is designed specifically for select Buick, Cadillac, Chevrolet, and GMC vehicles. 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 various Buick, Cadillac, Chevrolet, and GMC models
• 12.32-inch wiring harness length with 20 gauge wire
• Four-wire configuration with radiused polygon male connector
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 15.87 inches for precise installation

Detailed Product Features and Specifications

This Walker oxygen sensor (part number 350-34939) features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor includes a 12.32-inch wiring harness made with 20 gauge wire, providing durability and reliable electrical connectivity. Its four-wire design supports both the sensor signal and heater circuit, ensuring consistent performance. The connector is a radiused polygon shape with a male gender, designed for a secure and specific fit. The sensor mounts via a threaded connection with an 18.0 mm diameter, and the overall length of 15.87 inches facilitates proper placement within the exhaust system.

Walker Products Aftermarket Line

Walker Products Aftermarket offers a range of emission control components engineered to meet or exceed OEM specifications. This oxygen sensor is part of their aftermarket line, providing a direct replacement solution tailored for specific vehicle applications. The focus on precise fitment and quality materials supports reliable emissions monitoring and compliance with environmental standards.

Compatible Vehicles and Common Applications

This oxygen sensor is compatible with a variety of Buick, Cadillac, Chevrolet, and GMC models, including but not limited to Acadia, ATS, Blazer, Camaro, Colorado, Corvette, Escalade, Impala, Malibu, Sierra, Silverado, Tahoe, and Yukon. It is designed to address issues such as:

• Check engine light triggered by faulty oxygen sensor
• Poor fuel economy due to incorrect air-fuel mixture readings
• Increased emissions and failed emissions tests
• Engine performance problems like rough idling or hesitation
• Heater circuit malfunctions affecting sensor operation

Installation Notes and Tips

When installing the Walker 350-34939 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the connector matches the radiused polygon male type for proper electrical connection. It is recommended to inspect the wiring harness for any damage and replace if necessary. Proper torque specifications should be followed to secure the sensor without over-tightening.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34939 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to ensure dependable operation throughout the sensor’s service life.