Walker 350-341047 Oxygen Sensor - Downstream

Walker 350-341047 Oxygen Sensor for Buick

Walker Products 350-341047 is a heated oxygen sensor built as a specific-fit replacement for downstream applications. It is engineered for vehicles that rely on accurate exhaust feedback to help the ECU manage fuel control and emissions performance.

Compatible with 2011-2013 Buick Regal, downstream bank 1 sensor 2, and 2013-2016 Buick Verano, downstream bank 1 sensor 2. The Walker Products Aftermarket line focuses on application-specific engine management and oxygen/air-fuel sensors for OE-style fitment and diagnostic feedback.

Key Features

• Part number: 350-341047
• Heated oxygen sensor design
• Specific fit for the listed downstream applications
• 4-wire configuration with female connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 10.43
• Overall length: 13.77
• Radiused polygon connector shape

Detailed Description

Walker Products 350-341047 is an OE-style oxygen sensor for downstream bank 1 sensor 2 locations on select Buick models. It is designed to provide the ECU with the exhaust feedback needed for proper engine management, making it a direct-fit choice for 2011-2013 Buick Regal and 2013-2016 Buick Verano applications. If you are searching for a downstream oxygen sensor for Buick Regal or a replacement oxygen sensor for Buick Verano bank 1 sensor 2, this part number matches the listed fitment.

Walker Products Aftermarket develops engine management sensors for specific vehicle applications, with attention to connector style, harness length, mounting thread, and sensor position. The 350-341047 part number is built around those application details to support accurate replacement selection.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Poor fuel economy caused by incorrect exhaust feedback
• Elevated exhaust emissions from a failing sensor
• Rough engine operation tied to sensor signal issues
• Stored ECU fault codes for bank 1 sensor 2 circuits

Installation Notes and Tips

Confirm the vehicle year, model, and sensor position before ordering. This part is specific fit, so match the downstream bank 1 sensor 2 location on the Buick Regal or Buick Verano application listed above. Inspect the sensor wiring harness and connector for damage during replacement, and verify the threaded mounting point is clean before installation.

Quality Assurance

Walker Products states that its engine management sensors are developed as replacement parts for worldwide vehicle applications and that the company has operated in the automotive sensor and fuel system market since 1946. The brand also notes ISO 9001/TS 16949 certification for its manufacturing processes.