Walker 350-34230 Oxygen Sensor - Center or Downstream

Walker 350-34230 Oxygen Sensor for Honda Civic and Acura RSX

Walker Products 350-34230 is a heated oxygen sensor built as a specific-fit OE replacement for select Honda Civic and Acura RSX applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fitment for targeted downstream and center positions
• 4-wire design with female connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 21.18 in.; overall length: 24.72 in.
• Radiused polygon connector shape for application-specific fitment

Product Details

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors engineered as OE-style replacements for a wide range of vehicles. Part number 350-34230 is built for specific applications and positions, including downstream and center locations on select 2001-2006 Honda Civic and 2005-2006 Acura RSX models. This sensor supports the ECU with the feedback needed for closed-loop fuel control and emissions monitoring. If your Honda Civic or Acura RSX is showing a check engine light tied to oxygen sensor performance, this part number 350-34230 is a direct-fit option for the listed applications.

This part cross-references Walker Products Aftermarket 350-34230 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor circuit or response faults
• Rough engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate exhaust readings
• Higher exhaust emissions from a failing downstream sensor
• Stored ECU fault codes tied to the affected sensor position

Installation Notes and Tips

Verify the exact position before installation: this sensor is listed for downstream and center locations, including Bank 1 Sensor 2 and Bank 1 Sensor 3 applications on specific Honda Civic models. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before replacement. Confirm thread size, connector style, and harness routing match the original part before tightening the threaded mount.

Quality Assurance

Walker Products has manufactured engine management and fuel system components since 1946 and operates as an ISO 9001/TS 16949 certified company. The 350-34230 oxygen sensor is produced as an application-specific replacement to support the diagnostic requirements of the vehicle ECU.