Delphi AS10291 Ignition Knock (Detonation) Sensor

Ignition Knock Sensor for Mercedes-Benz

Delphi AS10291 is an ignition knock sensor built for Mercedes-Benz engines that need accurate detonation detection and stable engine management input. It is a direct-fit sensor for a wide range of Mercedes-Benz C63 AMG, E350, ML550, S550, and related applications.

• Ignition knock (detonation) sensor for engine timing feedback
• Pin terminal type with 2 terminals
• 1 square male connector
• Screw-mounted design
• OE-calibrated and tested to OE standards
• Package contents: ignition knock (detonation) sensor

OE-Style Sensor Construction

Delphi AS10291 is part of Delphi’s sensor lineup for engine management and emission control systems. Each sensor is validated and calibrated to OE standards so the engine control module receives accurate knock signals, helping maintain proper ignition timing on Mercedes-Benz C300, C350, GL450, and other listed vehicles. This part cross-references Standard Ignition KS322 for the same application.

Vehicle Fitment

• Fits 2008-2015 Mercedes-Benz C63 AMG, N/A
• Fits 2009-2015 Mercedes-Benz G550, N/A
• Fits 2011-2015 Mercedes-Benz SLS AMG, N/A
• Fits 2010-2013 Mercedes-Benz S400, N/A
• Fits 2008-2012 Mercedes-Benz C300, N/A
• Fits 2007-2012 Mercedes-Benz GL450, N/A
• Fits 2008-2012 Mercedes-Benz GL550, N/A
• Fits 2010-2012 Mercedes-Benz GLK350, N/A
• Fits 2006-2011 Mercedes-Benz C350, N/A
• Fits 2007-2011 Mercedes-Benz CLS550, N/A
• Fits 2007-2011 Mercedes-Benz CLS63 AMG, N/A
• Fits 2006-2011 Mercedes-Benz E350, N/A
• Fits 2007-2011 Mercedes-Benz E550, N/A
• Fits 2007-2011 Mercedes-Benz E63 AMG, N/A
• Fits 2006-2011 Mercedes-Benz ML350, N/A
• Fits 2010-2011 Mercedes-Benz ML450, N/A
• Fits 2008-2011 Mercedes-Benz ML550, N/A
• Fits 2007-2011 Mercedes-Benz ML63 AMG, N/A
• Fits 2006-2011 Mercedes-Benz R350, N/A
• Fits 2007-2011 Mercedes-Benz S550, N/A
• Fits 2009-2011 Mercedes-Benz SLK300, N/A
• Fits 2005-2011 Mercedes-Benz SLK350, N/A
• Fits 2007-2010 Mercedes-Benz CL550, N/A
• Fits 2008-2010 Mercedes-Benz CL63 AMG, N/A
• Fits 2008-2010 Mercedes-Benz S63 AMG, N/A
• Fits 2006-2009 Mercedes-Benz CLK350, N/A
• Fits 2007-2009 Mercedes-Benz CLK550, N/A
• Fits 2007-2008 Mercedes-Benz CLK63 AMG, N/A
• Fits 2006-2008 Mercedes-Benz SLK280, N/A
• Fits 2006-2007 Mercedes-Benz C230, N/A
• Fits 2006-2007 Mercedes-Benz C280, N/A
• Fits 2007 Mercedes-Benz R63 AMG, N/A

What This Sensor Helps Address

• Knock sensor fault codes
• Engine pinging or detonation-related drivability issues
• Incorrect ignition timing input to the ECM
• Reduced engine performance caused by inaccurate knock detection
• Check engine light concerns tied to knock sensor failure

Installation Notes and Tips

Verify connector shape, terminal count, and mounting style before installation. Delphi AS10291 uses a square 1-connector, 2-terminal male configuration with screw mounting, and no mounting hardware is included. Confirm the sensor location and wiring condition on the vehicle before replacing the part.

Quality Assurance

Delphi tests and calibrates these sensors to OE standards to support accurate readings and consistent engine management performance. The brand’s sensor portfolio is developed with OE-level validation methods for dependable replacement on Mercedes-Benz applications.