Walker 350-34334 Oxygen Sensor

Walker 350-34334 Oxygen Sensor Overview

Walker Products 350-34334 is a heated oxygen sensor built as a direct OE-style replacement for specific Volkswagen and Audi applications. It is engineered for the correct fitment position and ECU feedback on vehicles that use a threaded, 4-wire sensor design.

Use this oxygen sensor when diagnosing fuel trim issues, a malfunction indicator light, or exhaust/emissions concerns on select Volkswagen Jetta, Passat, CC, and Audi models.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit design for the listed vehicle applications
• 4-wire configuration with male connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 48.74 in.
• Overall length: 52.28 in.
• Radiused polygon connector shape for application-specific connection

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE replacement parts for worldwide vehicle coverage. Part number 350-34334 is built to match the required sensor position and diagnostic feedback expected by the ECU on supported vehicles. This matters on modern systems where a failing sensor can trigger fault codes, reduce fuel economy, increase emissions, or cause poor engine performance.

Compatible With select 2004-2018 Audi and Volkswagen models, including Volkswagen Jetta, Passat, CC, Touareg, Golf, GTI, Beetle, Eos, and Audi A3, A4, A6 Quattro, Q7, TT, TT Quattro, TTS Quattro, and R8. Fitment varies by position such as center, downstream left, downstream right, downstream front, downstream rear, and downstream.

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

Common Issues This Sensor May Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough running or drivability concerns tied to sensor signal loss
• Elevated exhaust emissions from inaccurate air-fuel monitoring
• Stored ECU fault codes for the affected sensor circuit

Installation Notes and Tips

• Confirm the exact year, make, model, and sensor position before ordering.
• Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear.
• Verify the threaded mounting location and connector style match the original part.
• Clear diagnostic trouble codes after installation and confirm proper ECU feedback.
• For fitment examples: Fits 2015-2018 Volkswagen Passat, downstream right; Fits 2010-2017 Volkswagen CC, center; Fits 2008-2012 Audi R8, downstream left.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. Part number 350-34334 is manufactured for application-specific fitment and diagnostic performance on the listed vehicles.