Walker 350-35042 Oxygen Sensor

Walker Oxygen Sensor for OE-Style Engine Management

Walker Products Part Number 350-35042 is a heated oxygen sensor built for specific-fit applications and OE-style feedback to the ECU. It is engineered for upstream right, upstream, upstream left, and upstream front positions across select Ford Transit, Audi, and Volkswagen applications.

For drivers diagnosing a check engine light, poor fuel economy, or elevated exhaust emissions, this Walker Products Aftermarket oxygen sensor is built to restore accurate exhaust monitoring. The 350-35042 is a threaded, heated sensor with a 5-wire design, a 29.06-inch wiring harness, and a 18.0 mm thread diameter.

Key Features

• Heated oxygen sensor for precise exhaust gas feedback
• Specific-fit design for direct application matching
• 5-wire configuration with male radiused polygon connector
• 29.06-inch wiring harness length for vehicle-specific routing
• Threaded mounting type with 18.0 mm thread diameter
• Overall length: 32.6 inches
• Fits upstream right, upstream, upstream left, and upstream front positions depending on application

Detailed Description

Walker Products 350-35042 is an emission control sensor designed as an OE replacement for vehicles that rely on accurate air-fuel and oxygen feedback. In Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD applications, it fits the upstream right position for 2020-2025 model years. It also covers select Audi TT RS Quattro, Audi S6, Audi A3 Quattro, Volkswagen Eos, Volkswagen R32, and Volkswagen Phaeton applications where the upstream sensor location is specified.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors that match the application, fitment position, and ECU diagnostic requirements. Part number 350-35042 is built for vehicles that need a direct replacement oxygen sensor for accurate sensor feedback and emissions system operation.

This part cross-references 350-35042 for the same application.

What It Helps Address

• Check engine light related to 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 upstream sensor
• Fault codes stored in the ECU tied to the affected sensor circuit

Installation Notes and Fitment

• Fits 2022-2025 Ford Transit-150, upstream right.
• Fits 2022-2025 Ford Transit-250, upstream right.
• Fits 2022-2025 Ford Transit-350, upstream right.
• Fits 2022-2025 Ford Transit-350 HD, upstream right.
• Fits 2020-2021 Ford Transit-150, upstream right.
• Fits 2020-2021 Ford Transit-250, upstream right.
• Fits 2020-2021 Ford Transit-350, upstream right.
• Fits 2020-2021 Ford Transit-350 HD, upstream right.
• Fits 2012-2013 Audi TT RS Quattro, upstream.
• Fits 2008-2011 Audi S6, upstream.
• Fits 2006-2009 Audi A3 Quattro, upstream left.
• Fits 2007-2008 Volkswagen Eos, upstream front.
• Fits 2008 Volkswagen R32, upstream left.
• Fits 2006 Volkswagen Phaeton, upstream right.
• Fits 2006 Volkswagen Phaeton, upstream left.

Before installation, inspect the sensor, wiring harness, and connector for physical damage. Confirm the connector shape, thread size, and sensor position match the vehicle’s original configuration before replacement.

Quality Assurance

Walker Products has manufactured engine management and oxygen sensor components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-35042 is produced as a specific-application replacement to support the diagnostic feedback required by the ECU.