Walker 350-34462 Oxygen Sensor - Upstream Left or Upstream Right

Walker 350-34462 Oxygen Sensor for Land Rover

Walker Products 350-34462 is a heated oxygen sensor built as a specific-fit OE replacement for select Land Rover applications. It is engineered to deliver the ECU feedback needed for accurate fuel control and emissions monitoring on upstream sensor locations.

Key Features

• Heated oxygen sensor with specific fitment
• 4-wire design with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon female connector
• Wiring harness length: 16.06 in.; overall length: 19.61 in.
• Fits upstream right, upstream left, and upstream rear positions depending on vehicle application

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered for OE-style replacement use. Part number 350-34462 is built for specific vehicle applications, helping maintain the diagnostic feedback the ECU expects from the sensor circuit. This part is listed for 1999-2004 Land Rover Discovery, 2002-2004 Land Rover Freelander, and 1999-2002 Land Rover Range Rover, with fitment covering upstream right, upstream left, and upstream rear positions as shown in the application data. If you are replacing a Land Rover Discovery oxygen sensor or a Land Rover Freelander upstream sensor, confirm the exact position before ordering.

This part cross-references no listed aftermarket part numbers in the provided data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy from incorrect air-fuel feedback
• Rough engine operation caused by a failing upstream sensor
• Elevated exhaust emissions from inaccurate sensor readings
• Fault codes stored in the ECU for sensor-related issues

Installation Notes

Verify the sensor position, connector shape, and thread size before installation. Inspect the wiring harness and connector for damage, since physical wear can shorten sensor life and affect signal quality. This application uses a threaded mount and a female connector, so matching the original routing and connector orientation is important for proper installation.

Quality Assurance

Walker Products states that its engine management sensors are manufactured for specific applications and supported by ISO 9001/TS 16949 quality systems. Since 1946, the brand has supplied oxygen and air-fuel sensors for vehicle service and replacement needs.