Walker 350-34092 Oxygen Sensor

Walker Oxygen Sensor for Toyota and Lexus

Walker Products Part Number 350-34092 is a heated oxygen sensor built as a specific-fit OE replacement for select Toyota and Lexus applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for application-specific fitment. This Walker oxygen sensor is designed for the correct mounting position and connector style, making it a direct replacement for downstream service on listed vehicles.

Key Features

• Heated oxygen sensor for emissions and engine management feedback
• Specific-fit design for the listed Toyota Camry, Toyota Corolla, Toyota Solara, Lexus ES300, Lexus GS300, Lexus LS400, and Lexus SC400 applications
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 29.06 in.; overall length: 32.6 in.

Detailed Description

Walker Products 350-34092 is an oxygen sensor for downstream positions on select Toyota and Lexus vehicles, including Toyota Camry, Toyota Corolla, Toyota Solara, Lexus ES300, Lexus GS300, Lexus LS400, and Lexus SC400 applications. It is built for specific fitment and the correct ECU feedback required by the vehicle’s emissions system. This part number is listed for multiple downstream and rear/downstream positions, including Bank 1 Sensor 2 and Bank 1 Sensor 3 applications where specified by the vehicle.

As part of the Walker Products Aftermarket line, this sensor reflects the brand’s focus on OE-style engine management replacement parts. Part Number 350-34092 is intended for vehicles where the original sensor uses a threaded, heated, 4-wire design with the listed connector and harness dimensions.

This part cross-references no listed interchange part numbers in the provided data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation from inaccurate air-fuel correction
• Elevated exhaust emissions from a failing downstream sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Verify the exact year, make, model, emissions package, and sensor position before installation. This part is listed for downstream, downstream front, downstream rear, upstream, downstream right, and downstream left positions depending on the vehicle application, so match the original sensor location carefully. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before replacement.

For Toyota Camry oxygen sensor replacement, Toyota Solara downstream sensor service, or Lexus ES300 oxygen sensor replacement, confirm the vehicle’s emissions configuration and bank/sensor designation against the fitment notes. The sensor uses a threaded mount and a male connector, so the original connector style should match the vehicle harness.

Quality Assurance

Walker Products states that its engine management sensors are manufactured for specific applications and fitment positions, with ISO 9001/TS 16949 quality system certification supporting production consistency. Since 1946, Walker Products has supplied engine management and fuel system components for automotive service applications.

• Fits 2014-2019 Toyota Corolla, downstream
• Fits 2005-2006 Toyota Camry, downstream
• Fits 2003 Toyota Camry, downstream
• Fits 2004 Toyota Camry, downstream
• Fits 2003 Toyota Solara, downstream rear
• Fits 2001-2003 Toyota Solara, downstream front
• Fits 1999-2001 Lexus ES300, downstream
• Fits 1998-2005 Lexus GS300, downstream
• Fits 1995-2000 Lexus LS400, downstream right
• Fits 1995-2000 Lexus LS400, downstream left
• Fits 1996-2000 Lexus SC400, downstream right
• Fits 1996-2000 Lexus SC400, downstream left