Walker 350-33051 Oxygen Sensor - Upstream

Overview of Walker 350-33051 Oxygen Sensor

The Walker 350-33051 oxygen sensor is designed specifically for select Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data.

• Heated sensor type for faster response times
• Specific fit for multiple GM vehicles including Chevrolet Tahoe and GMC Yukon
• Threaded mounting type with 18.0 mm thread diameter
• 10.35-inch wiring harness length with 3 wires of 20 gauge
• Radiused polygon female connector for secure electrical connection
• Overall length of 13.9 inches for proper installation depth

Detailed Product Description

This Walker oxygen sensor (part number 350-33051) is engineered to meet the exact specifications of various GM vehicles such as the Chevrolet C1500 Suburban, Buick Park Avenue, and Pontiac Safari. Featuring a heated sensor element, it quickly reaches operating temperature to provide reliable oxygen level readings. The sensor’s 3-wire design and 20 gauge wiring ensure stable signal transmission, while the radiused polygon female connector offers a secure and precise fit. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation and compatibility with factory mounting points.

Walker Products Aftermarket is known for delivering emission control components that meet or exceed OEM standards. This oxygen sensor is part of their aftermarket line, providing a direct replacement solution that supports emission system efficiency and engine management accuracy.

Common Applications and Issues Addressed

• Restores proper air-fuel ratio monitoring in Buick, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring accurate sensor feedback
• Reduces harmful emissions by maintaining correct sensor operation
• Eliminates rough idling or engine hesitation caused by faulty oxygen sensors

Installation Notes and Tips

• Verify compatibility with your specific make and model before installation
• Use proper tools to avoid damaging the 18.0 mm threaded sensor mount
• Ensure the wiring harness is routed away from heat sources and moving parts
• Check connector alignment for the radiused polygon female plug to ensure a secure connection
• Follow vehicle manufacturer torque specifications when tightening the sensor

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet emission control standards and provide reliable performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using the Walker 350-33051 oxygen sensor helps maintain compliance with emission regulations and supports long-term vehicle operation.