Walker 350-35051 Oxygen Sensor - Upstream Left

Walker 350-35051 Oxygen Sensor for Touareg

Walker Products 350-35051 is a heated oxygen sensor built as a specific-fit OE replacement for the exhaust system on the 2004 Volkswagen Touareg. It is engineered to provide the ECU with the feedback needed for accurate fuel control and emissions monitoring on the upstream left position.

Key Features

• Specific-fit heated oxygen sensor for the upstream left location
• 5-wire design with a 20-gauge harness
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific fitment
• Harness length measures 36.93 in. with overall length of 40.47 in.
• Walker Products Aftermarket line for engine management and oxygen sensor replacement

Product Details

Walker Products 350-35051 is part of the Walker Products Aftermarket line, which focuses on engine management and oxygen/air-fuel sensor replacement for vehicle-specific applications. This oxygen sensor is designed for the 2004 Volkswagen Touareg upstream left position and is built to match the required fitment position and diagnostic feedback expected by the ECU. The heated sensor design supports faster operating temperature, helping the engine management system maintain proper air-fuel control once the vehicle is running.

Fits 2004 Volkswagen Touareg, upstream left. Walker 350-35051 is a direct-fit oxygen sensor for this application and is referenced by the part number 350-35051 for ordering and catalog lookup.

What It Helps Address

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

Installation Notes and Tips

Confirm the upstream left location before installation on the 2004 Volkswagen Touareg. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten sensor life and affect signal quality. Verify thread size and connector shape against the original part before installation. The threaded mounting style is intended for direct exhaust installation at the specified position.

Quality Assurance

Walker Products states that its engine management sensors are developed as OE replacement parts for specific vehicle applications and manufactured under Automotive ISO9001/TS 16949 quality systems. The 350-35051 follows that application-specific approach for the 2004 Volkswagen Touareg upstream left oxygen sensor position.