Walker 350-34764 Oxygen Sensor - Downstream Left or Upstream

OE Replacement Oxygen Sensor for Volkswagen

Walker Products 350-34764 is an OE replacement oxygen sensor engineered for specific Volkswagen applications and sensor positions. It is built to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions monitoring on supported Atlas, Atlas Cross Sport, Teramont, Polo, and Vento models.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for exact application fitment. The 350-34764 part number is matched to the required position on the vehicle, including upstream and downstream locations, for direct replacement service on Volkswagen oxygen sensor applications.

Key Features

• OE replacement oxygen sensor for Volkswagen engine management systems
• Application-specific fitment by year, model, and sensor position
• Supports ECU feedback for emissions and fuel control monitoring
• Available for upstream and downstream front or left positions
• Walker Products Aftermarket part number 350-34764

Detailed Description

Walker Products 350-34764 is designed for Volkswagen oxygen sensor service where accurate exhaust feedback is required by the vehicle’s ECU. This sensor is listed for 2022-2023 Volkswagen Atlas and Atlas Cross Sport in downstream front positions, 2021-2023 Volkswagen Teramont in downstream left applications, and upstream positions on Volkswagen Polo and Vento models across the listed years. If your Volkswagen Atlas, Atlas Cross Sport, Teramont, Polo, or Vento has a fault related to oxygen sensor performance, this OE-style replacement provides the correct application match for the specified location.

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

What It Helps Address

• Check engine light or malfunction indicator light related to oxygen sensor faults
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel monitoring
• Higher exhaust emissions from a failing sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Before replacement, inspect the sensor wiring harness and connector for damage, since physical wear can shorten sensor life and affect operation. Confirm the exact position on the vehicle before ordering, as this part is listed for upstream, downstream front, and downstream left Volkswagen applications. For best results, verify the fault code and sensor location against the vehicle’s service information before installation.

Quality Assurance

Walker Products states that its engine management and oxygen/air-fuel sensors are developed as OE replacement parts for worldwide vehicle applications. The company is ISO 9001/TS 16949 certified and has supplied engine management and fuel system components since 1946.