Walker 242-1099 Ignition Knock (Detonation) Sensor - Right

Walker 242-1099 Ignition Knock Sensor

Walker Products 242-1099 is an ignition knock (detonation) sensor built for direct replacement service on select Audi and Volkswagen applications. It features a rectangular female connector, 3 blade terminals, and an included wiring harness for a clean OE-style repair.

Compatible With Audi A4, A4 Quattro, A6 Quattro, A8 Quattro, RS6, S6, S8, and Volkswagen Touareg, Passat, Cabriolet, Corrado, Jetta, and Golf applications across the listed model years.

Key Features

• Part number: 242-1099
• Ignition knock (detonation) sensor for engine management service
• Rectangular connector with 1 female connector and 3 male blade terminals
• Wiring harness included for application-specific replacement
• Harness length: 685.8 mm
• Overall length: 905 mm
• Compatible with select Audi and Volkswagen fitments, including Audi A4 and Volkswagen Passat applications

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on meeting or exceeding OEM standards and specifications. The Walker Products line is backed by product management, technical documentation, and application data intended to support accurate replacement selection. Part number 242-1099 follows that approach with a sensor-and-harness configuration suited to the listed Audi and Volkswagen vehicles, including fitments such as 2000-2004 Audi A6 Quattro, 1997-2000 Audi A4 Quattro, and 2004-2006 Volkswagen Touareg. This part cross-references Bosch (e.g., 0261231004, 0261231038) for the same application.

Common Issues This Part May Address

• Knock sensor fault codes
• Audible engine pinging or detonation under load
• Reduced ignition timing control from a failing sensor signal
• Rough engine performance related to inaccurate knock detection
• Check engine light concerns tied to knock sensor circuit faults

Installation Notes and Tips

Verify connector style, harness length, and engine-side routing before installation. This sensor uses a 3-terminal blade connection with a rectangular female connector and includes a harness, so matching the original routing and mounting location is important for proper fitment. Confirm the vehicle application by year, make, model, and position; listed fitments include N/A and Right positions depending on the vehicle.

• Fits 2004-2006 Volkswagen Touareg, N/A
• Fits 2000-2004 Audi A6 Quattro, N/A
• Fits 2000-2003 Audi A8 Quattro, N/A
• Fits 2003 Audi RS6, N/A
• Fits 2002-2003 Audi S6, N/A
• Fits 2001-2003 Audi S8, N/A
• Fits 1997-2000 Audi A4, N/A
• Fits 1997-2000 Audi A4 Quattro, N/A
• Fits 1998-2000 Volkswagen Passat, N/A
• Fits 1997-1999 Audi A8, Right
• Fits 1997-1999 Audi A8 Quattro, Right
• Fits 1995-1998 Audi Cabriolet, N/A
• Fits 1995 Audi 90, N/A
• Fits 1995 Audi 90 Quattro, N/A
• Fits 1990-1994 Audi V8 Quattro, N/A
• Fits 1990-1993 Volkswagen Cabriolet, N/A
• Fits 1990-1993 Volkswagen Passat, N/A
• Fits 1990-1992 Volkswagen Corrado, N/A
• Fits 1990-1991 Volkswagen Jetta, N/A
• Fits 1989-1990 Audi 100, N/A
• Fits 1989-1990 Audi 100 Quattro, N/A
• Fits 1988-1989 Audi 80, N/A
• Fits 1987-1989 Volkswagen Jetta, N/A
• Fits 1985-1989 Volkswagen Golf, N/A
• Fits 1985 Volkswagen Jetta, N/A
• Fits 1987-1988 Audi 5000 Quattro, N/A
• Fits 1988 Audi 90, N/A
• Fits 1985-1987 Audi 4000, N/A
• Fits 1985-1987 Audi Coupe, N/A
• Fits 1986 Volkswagen Jetta, N/A

Quality Assurance

Walker Products is an ISO 9001/IATF 16949 certified manufacturer with in-house engineering and product management support. That manufacturing focus helps maintain accurate application data, technical instructions, and consistent production standards for engine sensor replacement parts such as the 242-1099.