Walker 350-34343 Oxygen Sensor - Downstream Left or Downstream Right

Overview of Walker 350-34343 Oxygen Sensor

The Walker 350-34343 oxygen sensor 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 Buick, Chevrolet, GMC, Isuzu, and Saab vehicles
• Threaded mounting type with 18.0 mm thread diameter
• 11.34 inches wiring harness length with 4 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Overall length of 14.88 inches for proper installation

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34343) is engineered to meet the exact specifications required by your vehicle’s emission system. The heated sensor element allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire design includes a dedicated heater circuit, ensuring consistent sensor performance under various driving conditions. The radiused polygon male connector provides a reliable electrical connection, while the threaded mounting type with an 18.0 mm diameter ensures a secure fit in the exhaust manifold or pipe.

Compatible Vehicles and Applications

This oxygen sensor is compatible with specific models including Buick 9-7x, Chevrolet Trailblazer and Trailblazer EXT, GMC Envoy, Envoy XL, and Rainier, Isuzu Ascender, Saab 9-7x, Chevrolet Express 1500 and SSR, and GMC Savana 1500. Using the correct sensor like the Walker 350-34343 helps maintain proper air-fuel mixture and supports emission compliance.

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
• Increased emissions and failed emissions tests
• Engine hesitation or rough idling caused by sensor malfunction
• Reduced engine performance and drivability issues

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use proper tools to avoid damaging the 18.0 mm threaded mounting
• Verify connector type matches the radiused polygon male connector for a secure fit
• Check wiring harness length (11.34 inches) to confirm compatibility with your vehicle’s harness routing
• Follow manufacturer torque specifications when installing the sensor

Quality Assurance and Warranty

Walker Products Aftermarket parts are manufactured to meet or exceed OEM standards. The 350-34343 oxygen sensor undergoes rigorous testing to ensure durability and reliable performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to provide confidence in your purchase.