Walker 350-64081 Oxygen Sensor - Upstream

Walker 350-64081 Oxygen Sensor for Toyota and Scion

Walker Products 350-64081 is a specific-fit heated oxygen sensor engineered for upstream engine management feedback. It is built for select Toyota Camry, Toyota Solara, Scion tC, and Scion xB applications where accurate air-fuel monitoring is required by the ECU.

Key Features

• Heated oxygen sensor for upstream placement
• Specific-fit design for direct application matching
• 4-wire configuration with 20-gauge wiring
• 18.0 mm thread diameter and threaded mounting type
• Radiused polygon male connector for vehicle-specific connection
• Wiring harness length: 18.23 in.; overall length: 21.77 in.

Product Line Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacement parts. The 350-64081 follows that approach with application-specific fitment and sensor feedback intended to match the vehicle’s diagnostic requirements.

Detailed Description

This Walker oxygen sensor is designed for upstream Bank 1 Sensor 1 or front oxygen sensor locations on select 2004-2010 Toyota and Scion models. It is listed for 2004-2006 Toyota Camry, 2005-2007 Toyota Solara, 2007-2008 Toyota Camry, 2008-2010 Scion xB, and 2009-2010 Scion tC. For 2004-2006 Toyota Camry, fitment varies by emissions configuration, including California-ESV and non-California applications. Walker Products 350-64081 helps maintain proper ECU feedback by replacing a worn or failed upstream sensor with the correct fitment and connector style.

Common Issues This Sensor May Address

• Check engine light related to upstream oxygen sensor faults
• Poor engine performance caused by incorrect air-fuel feedback
• Increased fuel consumption from a degraded sensor signal
• Higher exhaust emissions from inaccurate mixture control
• Stored ECU fault codes tied to Bank 1 Sensor 1 or front sensor circuits

Installation Notes and Tips

Confirm the vehicle’s emissions configuration and sensor position before ordering, especially on 2004-2006 Toyota Camry applications. Inspect the sensor wiring harness and connector for damage before installation, since physical wear can shorten sensor life and affect operation. Verify the threaded mounting location and connector shape match the original part before replacement.

Quality Assurance

Walker Products states that its engine management sensors are developed as OE replacement parts and manufactured for specific applications and fitment positions. The company is ISO 9001/TS 16949 certified and has supplied engine management and fuel system components since 1946.