Walker 350-34253 Oxygen Sensor - Downstream or Upstream

Overview of Walker 350-34253 Oxygen Sensor

The Walker 350-34253 oxygen sensor is designed specifically for select Lexus and Toyota models, including the 4Runner, Land Cruiser, LX450, Previa, T100, and Tacoma. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota models listed
• 19.41-inch wiring harness length for proper installation
• 4-wire configuration with 20 gauge wire for reliable signal transmission
• Radiused polygon male connector for secure connection
• 18.0 mm thread diameter with flange mount for stable placement
• Overall length of 22.95 inches to accommodate vehicle design

Detailed Product Description

This oxygen sensor from Walker Products Aftermarket is engineered to meet the exact specifications required by your Lexus or Toyota vehicle. The heated sensor element allows the sensor to reach operating temperature quickly, improving emissions control during cold starts. The 4-wire design includes two wires for the heating element and two for the sensor signal, ensuring accurate and consistent readings. The radiused polygon male connector and flange mount provide a secure and precise fit, reducing the risk of leaks or sensor failure. With a wiring harness length of 19.41 inches and an overall length of 22.95 inches, this sensor is designed to fit seamlessly into the exhaust system of compatible models such as the Toyota Tacoma and Lexus LX450.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct replacement solution tailored for specific vehicle applications. By adhering to strict manufacturing and quality control processes, Walker ensures that each sensor provides consistent performance and durability for emission systems in Lexus and Toyota vehicles.

Common Applications and Issues Addressed

• Restores proper air-fuel ratio monitoring for improved fuel efficiency
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by providing accurate sensor data
• Prevents engine performance issues caused by faulty oxygen sensors
• Supports smooth engine operation and drivability

Installation Notes and Tips

When installing the Walker 350-34253 oxygen sensor, ensure the vehicle is cool to avoid burns. Use anti-seize compound on the sensor threads if not pre-applied to facilitate future removal. Verify the connector matches the radiused polygon male design for a secure fit. Follow torque specifications for the 18.0 mm flange mount to prevent damage. Proper routing of the 19.41-inch wiring harness is essential to avoid contact with hot exhaust components.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet emission control standards and vehicle-specific requirements. This part number 350-34253 is manufactured to provide consistent sensor performance and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to ensure customer confidence in their emission control components.