Walker 250-25033 Oxygen Sensor

OE Oxygen Sensor for Select Porsche, Audi, Volkswagen, and Ford

Walker Products OE 250-25033 is a heated oxygen sensor built for specific upstream applications and direct ECU feedback. It is engineered as an OE-style replacement for select Porsche 911, Boxster, Cayman, Cayenne, and Macan models, along with certain Audi, Volkswagen, and Ford vehicles.

With a threaded mounting design, 5-wire construction, and a radiused polygon male connector, this sensor is specified for the correct fitment position and signal response required by the vehicle’s engine management system.

Key Features

• Walker Products OE part number 250-25033
• Heated oxygen sensor for upstream applications
• Specific fit design for the listed vehicle positions
• 5-wire configuration with 20-gauge wiring
• 32.99 in. wiring harness length and 36.54 in. overall length
• 18.0 mm thread diameter with threaded mounting
• Radiused polygon male connector

Product Details

Walker Products OE 250-25033 is part of the Walker Products OE line, which focuses on application-specific engine management sensors for vehicles worldwide. This oxygen sensor is built to match the required fitment position and provide the diagnostic feedback expected by the ECU. For drivers searching for an upstream oxygen sensor for Porsche 911, Porsche Boxster, Porsche Cayman, or Porsche Cayenne applications, this part number offers a direct replacement format. It also covers select Audi A8 Quattro, Volkswagen CC, Jetta, Passat, Phaeton, and Beetle applications, plus the 2016 Ford Fiesta upstream base sensor application.

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

Common Issues This Sensor May Address

• Check engine light or malfunction indicator light related to oxygen sensor faults
• Poor engine performance caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel readings
• Higher exhaust emissions from a failing upstream sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Verify the exact position before ordering, since this sensor is listed for upstream right, upstream left, upstream, and upstream rear applications depending on vehicle. Inspect the sensor wiring harness and connector for damage before installation, and confirm the threaded mounting and connector style match the original unit. For best results, compare the existing sensor’s wire count, connector shape, and thread diameter to the replacement part.

Quality Assurance

Walker Products states that its engine management sensors are developed as OE replacements and manufactured under ISO 9001/TS 16949 quality systems. Since 1946, the brand has supplied engine management and fuel system components for automotive applications.

Compatible Vehicles

• Fits 2010-2019 Porsche 911, upstream right.
• Fits 2010-2019 Porsche 911, upstream left.
• Fits 2015-2018 Porsche Cayenne, upstream right.
• Fits 2015-2018 Porsche Macan, upstream right.
• Fits 2015-2016 Audi A8 Quattro, upstream.
• Fits 2016 Ford Fiesta, upstream.
• Fits 2013-2016 Porsche Boxster, upstream right.
• Fits 2013-2016 Porsche Boxster, upstream left.
• Fits 2014-2016 Porsche Cayman, upstream right.
• Fits 2014-2016 Porsche Cayman, upstream left.
• Fits 2009-2016 Volkswagen CC, upstream rear.
• Fits 2005-2008 Volkswagen Jetta, upstream.
• Fits 2006-2008 Volkswagen Passat, upstream rear.
• Fits 2006 Volkswagen Phaeton, upstream.
• Fits 2005 Volkswagen Beetle, upstream.