Walker 350-64090 Oxygen Sensor - Upstream

Walker 350-64090 Oxygen Sensor for Honda and Acura

Walker Products 350-64090 is a specific-fit heated oxygen sensor engineered as an OE replacement for select Honda and Acura applications. It is built for upstream placement and is designed to deliver the diagnostic feedback the ECU expects from the affected sensor position.

Key Features

• Heated oxygen sensor for upstream engine management feedback
• Specific-fit design for direct application matching
• 4-wire configuration with 20-gauge wiring
• 11.34-inch wiring harness length and 14.88-inch overall length
• 18.0 mm thread diameter with threaded mounting
• Radiused polygon male connector for vehicle-specific connection

Product Details

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacements for worldwide vehicle coverage. Part number 350-64090 is built for upstream sensor locations on select Honda City, Honda Fit, Honda Accord, Honda CR-V, Acura TSX, and Acura RDX applications. This sensor supports the ECU’s fuel-control and emissions monitoring strategy by providing the feedback needed from the upstream position.

For fitment-based searches, this part is commonly selected for an upstream oxygen sensor replacement on 2018-2020 Honda City, 2010-2016 Honda City, 2014 Honda Fit, 2008-2012 Honda Accord, 2010-2011 Honda CR-V, 2014 Acura TSX, 2009-2013 Acura TSX, and 2007-2012 Acura RDX. Walker 350-64090 is also referenced by shoppers looking for a Honda Accord upstream oxygen sensor or Acura TSX Bank 1 Sensor 1 replacement.

Common Issues This Sensor May Address

• Check engine light related to upstream oxygen sensor faults
• Poor engine performance caused by inaccurate exhaust feedback
• Increased fuel consumption from incorrect air-fuel control
• Higher exhaust emissions from a failing sensor signal
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the vehicle’s sensor position before ordering, since this part is for upstream applications only. Inspect the sensor wiring harness, connector, and surrounding harness routing for heat damage, abrasion, or corrosion before installation. Verify thread size, connector shape, and wire length against the original sensor to ensure proper routing and fitment on Honda City, Honda Fit, Honda Accord, Honda CR-V, Acura TSX, or Acura RDX applications.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. Part number 350-64090 is manufactured for the specified application and position to provide the diagnostic response required by the ECU.