Bosch 0261231038 Ignition Knock (Detonation) Sensor

Bosch Knock Sensor for Audi and Volkswagen

Bosch 0261231038 is an OE-quality ignition knock sensor built for accurate detonation detection and stable engine control. It supports engine protection while helping reduce fuel consumption, with Bosch noting potential fuel savings of up to 9% in the right application.

Key Features

• OE-quality Bosch ignition knock (detonation) sensor
• Helps the engine control system detect spark knock and adjust timing
• Supports engine protection under load, heat, and varying fuel conditions
• Built for direct-fit service on select Audi and Volkswagen models
• Part number 0261231038 for easy identification

Detailed Description

This Bosch knock sensor is used in emission control and engine management systems where precise detonation feedback is required. It is a direct replacement for select Audi A4, A4 Quattro, A6 Quattro, A8 Quattro, RS6, S6, S8, and Volkswagen Touareg applications, along with additional Audi and Volkswagen fitments from 1985 through 2007. For buyers searching for an Audi A4 knock sensor, Volkswagen Passat knock sensor, or Bosch 0261231038 replacement, this part provides the OE-style signal quality needed for proper ignition control. This part cross-references 054905377A for the same application.

Bosch’s knock sensor line is focused on accurate engine knock detection to help the ECU respond before detonation causes drivability issues or long-term engine stress. If you are replacing a failed sensor on an Audi A6 Quattro, Volkswagen Golf, or Touareg, Bosch 0261231038 is built for the specified factory applications.

What It Helps Solve

• Check engine light related to knock sensor faults
• Audible pinging or spark knock under acceleration
• Reduced engine performance caused by incorrect ignition timing
• Rough running or hesitation tied to detonation feedback errors
• Fuel economy loss from inaccurate knock control

Installation Notes and Tips

Verify the vehicle year, make, model, and engine application against the fitment list before ordering. This sensor is listed for N/A position applications, so match the original sensor location and connector style on the vehicle. On some Audi and Volkswagen models, access may require removal of nearby intake or engine components for service. Clear diagnostic trouble codes after installation and confirm the repair with a road test.

Quality Assurance

Bosch supplies OE-quality engine management components, and this knock sensor is engineered to meet the demands of factory-style ignition control on select Audi and Volkswagen platforms. Part number 0261231038 is the reference to use when matching the correct replacement for the listed applications.

• Fits 2004-2007 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, N/A
• Fits 1997-1999 Audi A8 Quattro, N/A
• Fits 1994-1998 Audi Cabriolet, N/A
• Fits 1993-1995 Audi 90, N/A
• Fits 1993-1995 Audi 90 Quattro, N/A
• Fits 1995 Audi S6, N/A
• Fits 1992-1994 Audi 100, N/A
• Fits 1992-1994 Audi 100 Quattro, N/A
• Fits 1992-1994 Audi S4, 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 1988-1992 Audi 80 Quattro, N/A
• Fits 1990-1992 Volkswagen Corrado, N/A
• Fits 1985-1992 Volkswagen Golf, N/A
• Fits 1990-1992 Volkswagen Jetta, N/A
• Fits 1989-1991 Audi 100, N/A
• Fits 1989-1991 Audi 100 Quattro, N/A
• Fits 1991 Audi 80, N/A
• Fits 1990-1991 Audi 90, N/A
• Fits 1988 Audi 90, N/A
• Fits 1988-1990 Audi 80, N/A
• Fits 1985-1989 Volkswagen Jetta, N/A
• Fits 1988 Audi 5000 Quattro, N/A
• Fits 1985-1987 Audi 4000, N/A
• Fits 1987 Audi 5000 Quattro, N/A
• Fits 1985-1987 Audi Coupe, N/A