Walker 250-24414 Oxygen Sensor

OE Oxygen Sensor for Audi and Volkswagen

Walker Products OE oxygen sensor 250-24414 is a heated, specific-fit replacement built for downstream applications on select Audi and Volkswagen models. It is engineered to deliver the ECU feedback needed for proper fuel control and emissions monitoring.

Walker Products OE focuses on application-specific engine management sensors, and this part number is matched to the correct mounting position, connector style, and thread size for the listed vehicles.

Key Features

• Heated oxygen sensor for downstream exhaust monitoring
• Specific-fit design for direct vehicle application matching
• 4-wire configuration with male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 64.09
• Overall length: 67.64
• Walker Products OE part number 250-24414

Detailed Description

Walker Products OE 250-24414 is an oxygen sensor designed for downstream placement on select Audi A4, A4 Quattro, A6, A6 Quattro, Allroad Quattro, S4, S6, S8, RS6, and Volkswagen Passat applications. It is built as an OE-style replacement for vehicles that rely on accurate exhaust feedback to help the ECU manage emissions and engine operation. The heated sensor design supports faster operating temperature, while the specific-fit construction helps ensure the correct connector, wire count, and threaded installation point are used for the listed applications.

This part number, 250-24414, is intended for downstream rear, downstream front, downstream left, and downstream right positions depending on the vehicle listing. For fitment-based searches, this is a direct replacement oxygen sensor for 2000-2005 Volkswagen Passat, 2000-2004 Audi A6 Quattro, and 2000-2003 Audi A8 Quattro downstream sensor locations.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Elevated exhaust emissions from a failing downstream sensor
• Rough engine operation tied to sensor signal issues
• Fault codes stored in the ECU for affected sensor circuits

Installation Notes and Tips

Verify the exact vehicle position before installation, since this sensor is listed for specific downstream locations only. Check the sensor, wiring harness, and connector for physical damage before replacement, and confirm the threaded mounting point and connector orientation match the original part. For Audi A4, A6, S4, S6, S8, RS6, and Volkswagen Passat applications, correct side and position selection is important for proper ECU feedback.

Quality Assurance

Walker Products has produced engine management and oxygen/air-fuel sensors since 1946 and operates as an ISO 9001/TS 16949 certified company. The Walker Products OE line is built around application-specific replacement parts for accurate fitment and diagnostic system communication.

• Fits 2000-2005 Volkswagen Passat, downstream rear
• Fits 2000-2005 Volkswagen Passat, downstream front
• Fits 2000-2004 Audi A6 Quattro, downstream right
• Fits 2000-2004 Audi A6 Quattro, downstream left
• Fits 2003-2004 Audi RS6, downstream right
• Fits 2003-2004 Audi RS6, downstream left
• Fits 2000-2003 Audi A8 Quattro, downstream right
• Fits 2000-2003 Audi A8 Quattro, downstream left
• Fits 2002-2003 Audi S6, downstream right
• Fits 2002-2003 Audi S6, downstream left
• Fits 2001-2003 Audi S8, downstream right
• Fits 2001-2003 Audi S8, downstream left
• Fits 2000-2002 Audi S4, downstream right
• Fits 2000-2002 Audi S4, downstream left
• Fits 2000-2001 Audi A4, downstream right
• Fits 2000-2001 Audi A4, downstream left
• Fits 2000-2001 Audi A4 Quattro, downstream right
• Fits 2000-2001 Audi A4 Quattro, downstream left
• Fits 2000-2001 Audi A6, downstream right
• Fits 2000-2001 Audi A6, downstream left
• Fits 2001 Audi Allroad Quattro, downstream right
• Fits 2001 Audi Allroad Quattro, downstream left