Walker 350-341002 Oxygen Sensor - Downstream

Walker 350-341002 Oxygen Sensor for Honda Civic

Walker Products 350-341002 is a heated oxygen sensor built as a specific-fit OE-style replacement for downstream applications. It is engineered to provide the ECU with the feedback needed for accurate fuel control and emissions monitoring on select Honda Civic models.

Compatible with 2016-2021 Honda Civic, downstream bank 1 sensor 2, this Walker Products Aftermarket sensor is built around the application-specific fitment and connector requirements of the vehicle. The Walker Products line focuses on engine management and oxygen/air-fuel sensors for direct replacement use in modern emissions systems.

Key Features

• Part number 350-341002
• Heated oxygen sensor design for faster operating response
• Specific fit for downstream bank 1 sensor 2 applications
• 4-wire configuration with male connector
• 18.00 mm thread diameter
• 8.39 in. wiring harness length and 11.93 in. overall length
• 22-gauge wiring

Detailed Description

Walker Products 350-341002 is engineered for select 2016-2021 Honda Civic models in the downstream position. As an OE-replacement oxygen sensor, it is built to match the vehicle’s application, mounting position, and diagnostic feedback requirements so the ECU can monitor exhaust oxygen levels and adjust engine operation accordingly. The heated sensor design helps it reach operating temperature more quickly, which is important for emissions-system performance during normal driving.

Walker Products Aftermarket focuses on engine management sensors for modern vehicles, and this part number reflects that application-specific approach. If the original sensor has failed or the wiring and connector have been damaged, the vehicle may store fault codes and show drivability or emissions-related symptoms. This part number, 350-341002, is intended for direct replacement on the listed Honda Civic applications.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation tied to emissions-system sensor failure
• Increased exhaust emissions from inaccurate air-fuel monitoring
• Stored ECU fault codes for bank 1 sensor 2 circuits

Installation Notes and Tips

Verify the vehicle is a 2016-2021 Honda Civic with the downstream bank 1 sensor 2 application before ordering. Inspect the sensor wiring harness and connector for heat damage, corrosion, or abrasion before installation, since damaged wiring can shorten sensor life or trigger repeat faults. Confirm thread size and connector style match the original part, and clear diagnostic trouble codes after installation if required by the repair procedure.

Quality Assurance

Walker Products has produced engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-341002 is built as a specific application replacement for the listed Honda Civic fitment.