Walker 350-34387 Oxygen Sensor - Upstream Left, Upstream Rear or Upstream Right

Walker 350-34387 Oxygen Sensor Overview

Walker Products 350-34387 is a heated oxygen sensor built as an OE-style replacement for specific Hyundai and Kia applications. It is engineered for the correct fitment position and ECU feedback required by the vehicle’s engine management system.

For drivers diagnosing a check engine light, poor fuel economy, or elevated emissions, this Walker Products Aftermarket sensor is designed for direct replacement in confirmed upstream locations on select Hyundai Genesis Coupe, Veracruz, Genesis, Santa Fe, and Kia Borrego and Sorento models.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for confirmed upstream positions
• 4-wire configuration with female connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 16.26; wire gauge: 22
• Overall length: 19.8
• Radiused polygon connector shape for application-specific fitment

Product Line Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed for replacement use across a wide range of vehicles. Part number 350-34387 follows that application-specific approach, matching the required sensor position and diagnostic feedback expected by the ECU.

Detailed Description

This oxygen sensor is intended for vehicles that rely on accurate exhaust oxygen feedback to manage fuel delivery and emissions control. In the correct upstream location, Walker 350-34387 helps the ECU monitor air-fuel conditions and respond to changing engine load. It is a direct-fit replacement for select 2007-2012 Hyundai and Kia models, including Hyundai Genesis Coupe, Veracruz, Genesis, Santa Fe, and Kia Borrego and Sorento applications.

Walker Products has long focused on engine management components, and this sensor reflects that OE-replacement approach with application-specific fitment, connector style, and mounting design. If the original sensor has triggered fault codes or the vehicle is showing drivability concerns, this part number 350-34387 is built for the listed upstream positions.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough running or inconsistent air-fuel control
• Increased exhaust emissions from a failing sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

Confirm the exact upstream position before ordering, since this sensor is listed for upstream right, upstream rear, and upstream left applications depending on vehicle. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. Because oxygen sensor faults can also be affected by related wiring or connector issues, verify the full circuit condition during diagnosis.

Compatible With: Fits 2010-2012 Hyundai Genesis Coupe, upstream right; Fits 2007-2012 Hyundai Veracruz, upstream rear; Fits 2009-2011 Hyundai Genesis, upstream left; Fits 2010-2011 Kia Borrego, upstream right; Fits 2007-2009 Hyundai Santa Fe, upstream rear; Fits 2009 Kia Borrego, upstream right; Fits 2007-2009 Kia Sorento, upstream rear. This part cross-references Walker Products Aftermarket 350-34387 for the same application.

Quality Assurance

Walker Products states that its engine management sensors are developed under Automotive ISO9001/TS 16949-certified manufacturing practices. Since 1946, the brand has supplied oxygen and air-fuel sensors for replacement use in vehicle applications worldwide.