Walker 350-34074 Oxygen Sensor - Downstream or Downstream Front

Overview of Walker 350-34074 Oxygen Sensor for Lexus and Toyota

The Walker 350-34074 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Prius, Highlander, and RX series. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota vehicles
• Threaded mounting with 18.0 mm thread diameter
• 20.2-inch wiring harness length with 4 wires
• Radiused polygon male connector for secure connection
• Overall length of 23.74 inches for proper installation
• Wire gauge measurement of 20 for reliable signal transmission

Detailed Product Description

This Walker oxygen sensor (part number 350-34074) is engineered to meet the exact specifications required by various Lexus and Toyota models such as the CT200h, Prius (including Prius C, Plug-In, and V), Highlander, RX350, RX450h, and Sienna. Featuring a heated sensor element, it provides quicker warm-up times to reduce emissions during cold starts. The sensor’s 20.2-inch wiring harness and 4-wire configuration ensure compatibility with the vehicle’s existing wiring system. The radiused polygon male connector and threaded mounting type with an 18.0 mm thread diameter allow for a secure and precise fit, maintaining the integrity of the emission control system.

Walker Products Aftermarket 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 commitment to providing reliable, vehicle-specific parts that support proper engine management and emissions compliance. The 350-34074 sensor reflects Walker’s focus on quality and fitment accuracy for Lexus and Toyota applications.

Common Applications and Issues Addressed

• Helps resolve rough idling caused by faulty oxygen sensor readings
• Reduces engine hesitation and poor acceleration linked to sensor failure
• Prevents increased emissions and failed emissions tests
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing accurate air-fuel mixture data

Installation Notes and Tips

When installing the Walker 350-34074 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the connector’s radiused polygon shape and male gender match the vehicle’s wiring harness. Proper torque specifications should be followed to secure the sensor without over-tightening. It is recommended to inspect the wiring harness for any damage before installation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34074 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to ensure dependable performance in Lexus and Toyota vehicles.