Walker 350-34478 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker 350-34478 Oxygen Sensor for Toyota Vehicles

The Walker 350-34478 oxygen sensor is designed specifically for select Toyota models including the 4Runner, Land Cruiser, MR2, and Pickup. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for Toyota 4Runner, Land Cruiser, MR2, and Pickup
• 17.44-inch wiring harness length with 20-gauge wire
• Four-wire configuration with radiused polygon female connector
• Flange mount with 18.0 mm thread diameter for secure installation
• Overall length of 20.98 inches for proper fitment

Detailed Product Description and Attributes

This oxygen sensor from Walker Products Aftermarket is engineered to meet the exact specifications required by Toyota vehicles such as the 4Runner, Land Cruiser, MR2, and Pickup. Featuring a heated sensor element, it provides quicker warm-up times which help reduce emissions during cold starts. The sensor includes a 17.44-inch wiring harness with 20-gauge wires arranged in a four-wire setup, ensuring reliable electrical connections and signal transmission.

The connector is a radiused polygon female type, designed to fit securely with the vehicle’s wiring harness. The sensor mounts via a flange mount system with an 18.0 mm thread diameter, providing a stable and leak-free installation. The overall length of 20.98 inches allows for proper positioning within the exhaust system.

Walker Products Aftermarket Brand Line

Walker Products Aftermarket offers a range of emission control components designed to meet or exceed OEM standards. This oxygen sensor is part of their comprehensive lineup focused on delivering precise sensor performance and durability. The brand line emphasizes compatibility and quality, making it a reliable choice for maintaining Toyota emissions systems.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces emissions by providing accurate exhaust gas readings
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers caused by sensor failure
• Improves fuel economy by ensuring sensor accuracy

Installation Notes and Tips

When installing the Walker 350-34478 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the flange mount and thread diameter specifications to verify proper fitment. Confirm the radiused polygon female connector matches the vehicle harness to avoid connection issues. It is recommended to inspect wiring and connectors for damage before installation to ensure optimal sensor performance.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34478 are not provided here, Walker typically offers coverage against defects in materials and workmanship. This ensures dependable operation and compliance with emissions requirements for Toyota 4Runner, Land Cruiser, MR2, and Pickup models.