Walker 350-34481 Oxygen Sensor - Downstream Front, Downstream Left or Downstream Right

Walker 350-34481 Oxygen Sensor for Hyundai and Kia

Walker Products 350-34481 is a heated oxygen sensor built as a specific-fit OE replacement for select Hyundai and Kia applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions monitoring on vehicles such as the Hyundai Santa Fe, Hyundai Genesis, Kia Sorento, and Kia Sedona.

Key Features

• Heated oxygen sensor with specific-fit application coverage
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire design with 20-gauge wiring
• Radiused polygon male connector for vehicle-specific connection
• Wiring harness length: 10.35 in.; overall length: 13.9 in.
• Walker Products Aftermarket line for engine management and oxygen sensor replacement

Product Details

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors engineered for OE-style replacement use. Part number 350-34481 is built for the specified mounting position and wiring configuration, making it a direct replacement choice for downstream front, downstream rear, downstream right, and downstream left sensor locations where listed. This part number 350-34481 is used across multiple Hyundai and Kia platforms, including Hyundai Santa Fe, Hyundai Santa Fe XL, Hyundai Genesis, and Kia Sorento, with fitment that follows the exact vehicle position shown in the application data.

As an oxygen sensor, this component helps the ECU monitor exhaust oxygen content so the engine can adjust air-fuel delivery and emissions strategy. Walker Products notes that a failing sensor can contribute to poor engine performance, higher fuel consumption, increased exhaust emissions, and a malfunction indicator light. The sensor, connector, and wiring should also be inspected for physical damage during diagnosis.

What It May Help Resolve

• Check engine or malfunction indicator light related to oxygen sensor faults
• Rough running caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel control
• Elevated exhaust emissions from a degraded sensor signal
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

• Confirm the exact position before ordering: downstream front, downstream rear, downstream right, or downstream left.
• Verify connector shape, wire count, and thread diameter against the original sensor.
• Inspect the harness and connector for heat damage, abrasion, or corrosion before installation.
• Use the vehicle’s service information for torque and routing procedures.
• Fits 2010-2018 Hyundai Santa Fe, downstream front; 2013-2018 Hyundai Santa Fe XL, downstream front; 2015-2018 Kia Sedona, downstream front; and other listed Hyundai/Kia applications.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. Part number 350-34481 is manufactured for the specified application and fitment position to provide the diagnostic feedback required by the ECU.