Walker 350-34256 Oxygen Sensor - Downstream, Upstream or Upstream Right

Overview of Walker Oxygen Sensor 350-34256

The Walker 350-34256 oxygen sensor is designed specifically for select Lexus and Toyota models, including the GS300, GS430, IS300, LS430, SC300, SC430, and Supra. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota models listed
• 15.28-inch wiring harness length for proper installation
• 20 gauge wire measurement with 4 wires for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 18.82 inches for correct fitment

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components that meet or exceed OEM specifications. The line emphasizes precise fitment and durability, making it suitable for maintaining factory-level emissions performance on compatible Lexus and Toyota vehicles.

Product Description and Attributes

The Walker 350-34256 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 15.28-inch wiring harness length and 20 gauge wire ensure stable electrical signals, while the 4-wire configuration supports both sensor heating and signal output. The radiused polygon male connector provides a secure and reliable connection to the vehicle’s wiring harness. Its threaded mounting type with an 18.0 mm diameter ensures proper installation and sealing in the exhaust system. The overall length of 18.82 inches is designed to fit the specified Lexus and Toyota models without modification.

Compatible Vehicles and Applications

• Compatible with Lexus GS300, GS430, IS300, LS430, SC300, SC430
• Compatible with Toyota Supra models
• Used to monitor oxygen levels in the exhaust for emissions control
• Helps maintain optimal air-fuel ratio for engine performance
• Supports compliance with emissions regulations

Installation Notes and Tips

• Ensure the vehicle is cool before installation to avoid burns
• Use proper tools to remove the old sensor and install the threaded sensor securely
• Verify connector type matches the vehicle harness (radiused polygon male)
• Check wiring harness length and routing to prevent damage or interference
• Follow vehicle manufacturer torque specifications for sensor installation

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet industry standards for emissions control components. The 350-34256 part number undergoes quality checks to ensure durability and reliable performance. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.