Walker 350-34218 Oxygen Sensor - Downstream Left or Downstream Rear

Overview of Walker 350-34218 Oxygen Sensor

The Walker 350-34218 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 monitoring exhaust gases precisely.

• Heated sensor type for faster response times
• Specific fit for Chevrolet, GMC, Pontiac, and Saturn models
• 20.39-inch wiring harness length for convenient installation
• Four-wire design with 20 gauge wire for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 23.94 inches for proper fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34218) is engineered to meet the exact specifications of your vehicle’s original equipment. Featuring a heated sensor element, it provides quicker warm-up times, which helps reduce emissions during cold starts. The four-wire configuration includes a heater circuit and signal wires, ensuring accurate oxygen level readings for the engine control unit (ECU). The sensor’s radiused polygon male connector and threaded mounting type with an 18.0 mm diameter allow for a secure and precise fit in compatible vehicles.

Walker Products Aftermarket is a trusted line known for delivering reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of their commitment to providing quality replacement parts tailored to specific vehicle applications, including Chevrolet Aura, GMC Sierra 1500 HD, Pontiac G6, and Saturn models.

Compatible Vehicles and Applications

This oxygen sensor is compatible with a range of Chevrolet, GMC, Pontiac, and Saturn vehicles, including:

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

Common Issues Addressed by This Oxygen Sensor

• Engine performance problems due to inaccurate air-fuel mixture readings
• Increased emissions and failed emissions tests
• Check engine light triggered by faulty oxygen sensor signals
• Poor fuel economy caused by incorrect sensor data
• Rough idling or hesitation during acceleration

Installation Notes and Tips

When installing the Walker 350-34218 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector type matches the vehicle’s harness for a secure fit. Thread the sensor carefully to prevent cross-threading and torque to manufacturer specifications. It is recommended to inspect the wiring and connectors for damage before installation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.