Walker 350-34405 Oxygen Sensor - Downstream or Upstream

Overview of Walker 350-34405 Oxygen Sensor for Toyota Vehicles

The Walker 350-34405 oxygen sensor is designed specifically for Toyota 4Runner, Pickup, and T100 models. 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, Pickup, and T100
• 6.61-inch wiring harness length with 22 gauge wire
• 4-wire configuration with radiused polygon male connector
• Flange mount with 18.0 mm thread diameter
• Overall length of 10.16 inches for precise installation

Detailed Product Features and Specifications

This oxygen sensor from Walker Products Aftermarket is engineered to meet the exact specifications required by Toyota 4Runner, Pickup, and T100 models. The heated sensor type allows the unit to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 6.61-inch wiring harness length and 22 gauge wire ensure reliable electrical connections, while the 4-wire design supports both sensor heating and signal transmission. The radiused polygon male connector provides secure and accurate fitment, preventing connection issues. The flange mount with an 18.0 mm thread diameter and an overall length of 10.16 inches allows for straightforward installation in the designated exhaust port.

Walker Products Aftermarket Line Information

Walker Products Aftermarket offers a range of emission control components designed to meet or exceed OEM standards. This oxygen sensor is part of their sensor category, providing reliable and vehicle-specific solutions for emission monitoring. The focus on precise fitment and durable construction supports consistent engine management and emissions compliance for Toyota vehicles.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for Toyota 4Runner, Pickup, and T100
• Reduces engine misfires and rough idling caused by faulty oxygen sensors
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate exhaust gas readings
• Supports engine control unit (ECU) adjustments for optimal performance

Installation Notes and Tips

When installing the Walker 350-34405 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the flange mount and thread diameter specifications to verify compatibility with the exhaust port. The 4-wire heated sensor requires proper connection of the wiring harness with the radiused polygon male connector to ensure sensor functionality. Avoid over-tightening the sensor to prevent damage to the threads or flange.

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 350-34405 should be confirmed with the supplier, Walker typically provides coverage against defects in materials and workmanship to support long-term reliability in Toyota 4Runner, Pickup, and T100 applications.