Walker 350-34001 Oxygen Sensor - Downstream Rear

Overview of Walker 350-34001 Oxygen Sensor

The Walker 350-34001 oxygen sensor is designed specifically for select Ford and Lincoln models, including the Explorer, Flex, MKS, MKT, and Taurus. This heated oxygen sensor provides accurate emissions control by monitoring exhaust gases and ensuring optimal engine performance.

• Heated sensor type for faster response times
• Specific fit for Ford and Lincoln vehicles
• 15.28-inch wiring harness length for flexible installation
• 20 gauge wire measurement with 4 wires for reliable signal transmission
• Radiused polygon female connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 18.82 inches for proper fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34001) is engineered to meet the exact specifications of your vehicle’s emission system. The heated sensor element allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire design includes a heater circuit and signal wires, ensuring accurate oxygen level readings. The radiused polygon female connector provides a secure and corrosion-resistant connection, while the threaded mounting type with an 18.0 mm diameter ensures a proper and stable fit in the exhaust system.

Compatible Vehicles and Applications

This oxygen sensor is compatible with specific Ford and Lincoln models, including:

• Ford Explorer
• Ford Flex
• Lincoln MKS
• Lincoln MKT
• Ford Taurus

It is designed to replace the original equipment sensor, maintaining proper emissions control and engine management for these vehicles.

Common Issues Addressed by This Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Engine performance problems such as rough idling or hesitation
• Heater circuit failure causing delayed sensor response

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate tools to avoid damaging the sensor or connector
• Verify the connector shape and gender match the vehicle harness (radiused polygon, female)
• Apply anti-seize compound on the threaded portion if recommended by the vehicle manufacturer
• Check wiring harness length (15.28 inches) for proper routing and clearance

Quality Assurance and Warranty

Walker Products Aftermarket parts are manufactured to meet or exceed OEM standards. The 350-34001 oxygen sensor undergoes rigorous testing to ensure durability and reliable performance in emission control systems. Warranty coverage details should be confirmed with the product documentation or supplier.