Walker 350-34587 Oxygen Sensor - Downstream Rear

Overview of Walker Oxygen Sensor 350-34587 for Toyota Sienna

The Walker 350-34587 oxygen sensor is designed specifically for Toyota Sienna models, providing precise emission control monitoring. This heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions compliance.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for Toyota Sienna vehicles
• 18.23-inch wiring harness length for proper installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure electrical connection
• Wire gauge measurement of 20 for durability and signal integrity
• Overall length of 21.77 inches to accommodate engine bay layout

Walker Products Aftermarket Line Details

The Walker Products Aftermarket line focuses on delivering emission control components that meet or exceed OEM specifications. This oxygen sensor from Walker Products Aftermarket is engineered to provide consistent sensor response and durability, ensuring compatibility and performance for Toyota Sienna vehicles requiring part number 350-34587.

Technical Description and Features

This oxygen sensor features a heated element to reduce warm-up time and improve sensor accuracy under various operating conditions. The 4-wire configuration includes two wires for the heater circuit and two for the sensor signal, enhancing responsiveness and reliability. The radiused polygon male connector ensures a secure fit with the vehicle’s wiring harness, minimizing the risk of electrical issues. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system.

Common Applications and Problem Resolution

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces emissions by providing accurate feedback to the engine control unit
• Addresses issues such as rough idling or poor fuel economy caused by faulty sensors
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine performance and reduced exhaust emissions

Installation Notes and Tips

Ensure the vehicle is cool before installation to avoid burns. Disconnect the battery prior to sensor replacement to prevent electrical shorts. Use the correct torque specifications for the 18.0 mm threaded mounting to avoid damage. Verify the connector shape and gender match the vehicle harness to ensure proper connection. It is recommended to inspect wiring harness condition during installation for any signs of wear or damage.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details for part number 350-34587 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability in Toyota Sienna applications.