Walker 350-64012 Oxygen Sensor - Upstream

Walker 350-64012 Oxygen Sensor for Acura RSX

Walker Products 350-64012 is a heated oxygen sensor built as a specific-fit OE replacement for select Acura RSX applications. It is engineered for upstream placement and provides the ECU with the feedback needed for accurate fuel control and emissions monitoring.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit for the correct application and mounting position
• 4-wire design with 20-gauge wiring
• 18.0 mm threaded mounting type
• Radiused polygon male connector for proper harness connection
• Overall length: 21.77 in.; wiring harness length: 18.23 in.

Product Details

Walker Products Aftermarket 350-64012 is part of the Walker Products Engine Management and Oxygen/Air-Fuel sensor line, developed as an OE-style replacement for vehicles worldwide. This upstream oxygen sensor is specified for 2005-2006 Acura RSX Bank 1 Sensor 1 applications and 2005-2006 Acura RSX front oxygen sensor applications. For Acura RSX owners searching for an upstream oxygen sensor, Walker 350-64012 is built to match the required fitment position and diagnostic feedback expected by the ECU.

This part number, 350-64012, is designed for direct replacement use where the original sensor is threaded into the exhaust stream and connected through a 4-wire heated circuit. Walker Products has long focused on engine management and fuel system components, with ISO 9001/TS 16949 certified manufacturing processes supporting consistent application-specific production.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Poor engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate exhaust readings
• Higher exhaust emissions from a failing sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes

Verify the connector shape, wire count, thread diameter, and upstream position before installation. Inspect the sensor wiring harness and connector for physical damage, since damaged wiring can shorten sensor life and affect ECU feedback. Confirm the vehicle uses the specified Bank 1 Sensor 1 or front upstream oxygen sensor location on 2005-2006 Acura RSX models before ordering.

Quality Assurance

Walker Products manufactures this sensor under ISO 9001/TS 16949 certified processes and builds it as an application-specific replacement for the intended vehicle fitment. Part number 350-64012 is backed by Walker Products’ long-running focus on engine management and oxygen sensor components.