OE Quality
60-Day Returns

Walker 350-34319 Oxygen Sensor - Downstream Left or Downstream Right
Overview of Walker 350-34319 Oxygen Sensor for Land Rover
The Walker 350-34319 oxygen sensor is designed specifically for Land Rover models including the LR4, Range Rover, and Range Rover Sport. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.
- Heated sensor type for faster response times
- Specific fit for Land Rover LR4, Range Rover, and Range Rover Sport
- Threaded mounting type with 18.0 mm thread diameter
- 38.9-inch wiring harness length with 4 wires of 20 gauge
- Radiused polygon male connector for secure connection
- Overall length of 42.44 inches for proper installation
Walker Products Aftermarket Line Details
This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The line emphasizes precise fitment and quality construction, ensuring compatibility and durability for emission sensors like the 350-34319.
Product Description and Specifications
The Walker 350-34319 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. It includes a 38.9-inch wiring harness with four 20-gauge wires, designed to interface with the vehicle’s engine control unit accurately. The sensor mounts via a threaded connection with an 18.0 mm diameter, ensuring a secure and leak-free fit. The radiused polygon male connector provides a reliable electrical connection, minimizing the risk of disconnection or corrosion. This sensor is engineered specifically for Land Rover LR4, Range Rover, and Range Rover Sport models, ensuring compatibility and performance.
Common Applications and Issues Addressed
- Helps maintain proper air-fuel mixture for efficient combustion
- Reduces harmful emissions by providing accurate exhaust gas readings
- Prevents engine performance issues related to faulty oxygen sensors
- Resolves check engine light triggers related to oxygen sensor faults
- Improves fuel economy by enabling precise engine adjustments
Installation Notes and Tips
When installing the Walker 350-34319 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector shape and gender match the vehicle’s harness for a secure fit. Thread the sensor carefully to avoid cross-threading and tighten to manufacturer torque specifications. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.
Quality Assurance and Warranty
Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet OEM standards for fit, form, and function. The 350-34319 part number is manufactured to provide consistent performance and durability. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship, supporting long-term reliability for Land Rover LR4, Range Rover, and Range Rover Sport applications.
| Brand | Walker |
|---|---|
| Part Number | 350-34319 |
| Position | Walker Products Aftermarket, Downstream Right |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 42.44 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 38.9 |
This part fits 14 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2013 | Land Rover | LR4 | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2013 | Land Rover | Range Rover Sport | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2012 | Land Rover | LR4 | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2012 | Land Rover | Range Rover | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2012 | Land Rover | Range Rover | 5.0L | V8 | GAS | Downstream Left | Downstream left oxygen sensor required.; Walker Products Aftermarket |
| 2012 | Land Rover | Range Rover Sport | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2011 | Land Rover | LR4 | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2011 | Land Rover | Range Rover | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2011 | Land Rover | Range Rover | 5.0L | V8 | GAS | Downstream Left | Downstream left oxygen sensor required.; Walker Products Aftermarket |
| 2011 | Land Rover | Range Rover Sport | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2010 | Land Rover | LR4 | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2010 | Land Rover | Range Rover | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2010 | Land Rover | Range Rover | 5.0L | V8 | GAS | Downstream Left | Downstream left oxygen sensor required.; Walker Products Aftermarket |
| 2010 | Land Rover | Range Rover Sport | 5.0L | V8 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products Aftermarket |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.