Walker 350-34259 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker 350-34259 Oxygen Sensor

The Walker 350-34259 oxygen sensor is designed specifically for select Chevrolet and GMC models, including trucks and SUVs like the Silverado 2500 and Yukon XL 2500. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance.

• Heated sensor type for faster response times
• Specific fit for Chevrolet and GMC trucks and SUVs
• 12.32-inch wiring harness length with 20 gauge wire
• Four-wire configuration with radiused polygon male connector
• Threaded mounting with 18.0 mm thread diameter
• Overall length of 15.87 inches for precise installation

Detailed Product Description

The Walker 350-34259 oxygen sensor is a heated sensor designed to provide reliable and accurate readings of oxygen levels in the exhaust system. Its four-wire design includes a 12.32-inch wiring harness made with 20 gauge wire, ensuring durability and proper electrical conductivity. The sensor features a radiused polygon male connector that matches the factory wiring harness for a secure connection. With a threaded mounting type and an 18.0 mm thread diameter, this sensor installs directly into the exhaust manifold or pipe, maintaining proper fitment and sealing.

This oxygen sensor is engineered for specific fitment on Chevrolet and GMC vehicles such as the C1500, C2500, Silverado 2500, Suburban 2500, Tahoe, Yukon, and various Express and Savana models. The overall length of 15.87 inches allows for proper positioning within the exhaust system to accurately monitor emissions and support engine control systems.

Walker Products Aftermarket Line

Walker Products Aftermarket offers a range of emission control components designed to meet or exceed OEM specifications. This product line focuses on delivering reliable sensors and parts that maintain vehicle emissions compliance and engine efficiency. The 350-34259 oxygen sensor is part of this line, providing a direct replacement solution for specific Chevrolet and GMC models to ensure proper emissions system function.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Chevrolet and GMC trucks and SUVs
• Helps resolve engine performance issues related to incorrect air-fuel mixture readings
• Addresses check engine light triggers caused by sensor malfunctions
• Supports emissions system compliance and reduces harmful exhaust emissions
• Improves fuel efficiency by providing accurate oxygen level data to the engine control unit

Installation Notes and Tips

• Ensure vehicle compatibility with Chevrolet and GMC models listed before installation
• Use proper tools to remove the old sensor and avoid damaging the threaded mounting area
• Verify the connector shape and gender match the factory harness for a secure fit
• Inspect wiring harness length and routing to prevent strain or damage
• Follow torque specifications for the 18.0 mm threaded sensor to ensure proper sealing

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet industry standards for durability and performance. While specific warranty details for part number 350-34259 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability in emission control applications.