Walker 350-34319 Oxygen Sensor - Downstream Left or Downstream Right

Walker 350-34319 Oxygen Sensor for Land Rover

Walker Products 350-34319 is a heated oxygen sensor built as a specific-fit replacement for select Land Rover applications. It is engineered for downstream right or downstream left placement where listed, helping the ECU receive the correct exhaust feedback for fuel control and emissions monitoring.

Key Features

• Heated oxygen sensor for precise exhaust monitoring
• Specific-fit design for the listed Land Rover applications
• 4-wire configuration with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 38.9 in.; overall length: 42.44 in.

Product Details

Walker Products Aftermarket focuses on OE-style engine management and oxygen/air-fuel sensors for vehicle-specific fitment. Part number 350-34319 is designed for the exact application and sensor position required by the vehicle, which helps maintain proper diagnostic feedback to the ECU. For Land Rover LR4, Range Rover Sport, and Range Rover models, this sensor is listed for downstream right service, with an additional downstream left application on 2010-2012 Range Rover.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by inaccurate exhaust feedback
• Increased fuel consumption from incorrect air-fuel control
• Higher exhaust emissions from a failing sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes

• Verify the sensor position before ordering: downstream right or downstream left, depending on the vehicle listing.
• Inspect the sensor, wiring harness, and connector for physical damage before installation.
• Confirm the threaded mounting location and connector style match the original part.
• Use the vehicle’s fault codes and service information to confirm the affected circuit.

Quality Assurance

Walker Products has produced engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-34319 is manufactured for specific application fitment and ECU feedback requirements.