Walker 350-64061 Oxygen Sensor - Upstream

Walker Oxygen Sensor for Nissan Altima

Walker Products 350-64061 is a heated oxygen sensor built as a specific-fit OE replacement for select Nissan Altima applications. It is engineered for upstream Bank 1 Sensor 1 use on 2011-2013 Altima models without California emissions certification, helping the ECU receive the correct exhaust feedback for fuel control and emissions monitoring.

Key Features

• Specific-fit oxygen sensor for targeted Nissan Altima applications
• Heated sensor design for faster operating response
• 4-wire configuration with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 12.32 in.; overall length: 15.87 in.

Product Details

Walker Products Aftermarket 350-64061 is part of the Walker Products engine management sensor line, developed as an OE-style replacement for vehicles worldwide. This oxygen sensor is built for the upstream position on Bank 1 Sensor 1 and is intended for 2011-2013 Nissan Altima models that are not California emissions certified. Walker Products has supplied engine management and fuel system components since 1946, with ISO 9001/TS 16949 certified manufacturing processes supporting application-specific fitment and ECU feedback requirements.

This part cross-references common OE-style oxygen sensor applications for the same vehicle fitment. Search terms such as 2011 Nissan Altima upstream oxygen sensor, 2012 Nissan Altima Bank 1 Sensor 1, and 2013 Nissan Altima heated O2 sensor can help confirm the correct application.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Poor fuel economy caused by incorrect air-fuel feedback
• Rough engine operation from inaccurate exhaust readings
• Elevated exhaust emissions from a failing sensor
• Stored ECU fault codes tied to Bank 1 Sensor 1

Installation Notes

Verify the vehicle is a 2011-2013 Nissan Altima without California emissions certification before ordering. Confirm the upstream Bank 1 Sensor 1 location, inspect the sensor connector, wiring harness, and nearby terminals for damage, and compare the connector shape and thread size before installation. Because this is a threaded, specific-fit sensor, proper routing and secure connector engagement are important for reliable operation.

Quality Assurance

Walker Products manufactures engine management sensors as OE replacement components and supports production through Automotive ISO9001/TS 16949 certified processes. The 350-64061 is built for the specified application and position to provide the diagnostic feedback expected by the ECU.