{"product_id":"wpr-242-1199","title":"Walker Products Ignition Knock Detonation Sensor - 242-1199","description":"\u003ch2\u003eProduct Information\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Walker Products\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Name:\u003c\/strong\u003e Ignition Knock Detonation Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDescription:\u003c\/strong\u003e Ignition Knock (Detonation) Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 242-1199\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Pieces:\u003c\/strong\u003e 1.0\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eWalker Products Ignition Knock (Detonation) Sensors are OE Replacement components that monitor engine vibrations to detect knocking or detonation events. These sensors are a critical part of the engine control system, allowing the ECU to adjust ignition timing in real time to prevent spark knock—a condition that can cause internal engine damage, reduced fuel economy, and drivability issues. Walker Knock Sensors are engineered to match OE specifications for frequency range, sensitivity, and electrical output. Each unit is tuned to detect the specific resonant frequency of knock in a given engine platform, enabling precise spark retard when knock is detected. Built from high-quality, heat- and oil-resistant materials, these sensors are designed to endure the harsh conditions of the engine block and cylinder head. With exact OE fitment, Walker Knock Sensors install directly into the original threaded locations and connect using factory-style electrical terminals. Whether addressing a fault code (e.g., P0325, P0330), correcting timing issues, or replacing a failed sensor, Walker Knock Sensors restore proper knock detection, improve engine safety, and support optimal ignition performance across a wide range of gasoline applications.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores Ignition Timing Accuracy: Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.\u003c\/li\u003e\n\u003cli\u003eBuilt for Harsh Environments: Engineered to resist heat, vibration, and oil exposure for long-lasting signal reliability.\u003c\/li\u003e\n\u003cli\u003eOE Replacement Sensitivity: Calibrated to match factory frequency response and output for seamless ECU integration and spark control.\u003c\/li\u003e\n\u003cli\u003eDetects Engine Knock: Monitors vibration frequencies to detect detonation and prevent pre-ignition engine damage.\u003c\/li\u003e\n\u003cli\u003eExact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWarranty\u003c\/h2\u003e\u003cp\u003e1 years\u003c\/p\u003e\u003ch2\u003eCountry of Origin\u003c\/h2\u003e\u003cp\u003eSpain\u003c\/p\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cp\u003eSee the fitment table for engine, trim and other application details.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2010 BMW 550i\u003c\/li\u003e\n\u003cli\u003e2010 BMW 650i\u003c\/li\u003e\n\u003cli\u003e2010 BMW X5\u003c\/li\u003e\n\u003cli\u003e2009 BMW 550i\u003c\/li\u003e\n\u003cli\u003e2009 BMW 650i\u003c\/li\u003e\n\u003cli\u003e2009 BMW X5\u003c\/li\u003e\n\u003cli\u003e2008 BMW 550i\u003c\/li\u003e\n\u003cli\u003e2008 BMW 650i\u003c\/li\u003e\n\u003cli\u003e2008 BMW 750i\u003c\/li\u003e\n\u003cli\u003e2008 BMW 750Li\u003c\/li\u003e\n\u003cli\u003e2008 BMW Alpina B7\u003c\/li\u003e\n\u003cli\u003e2008 BMW X5\u003c\/li\u003e\n\u003cli\u003e2007 BMW 550i\u003c\/li\u003e\n\u003cli\u003e2007 BMW 650i\u003c\/li\u003e\n\u003cli\u003e2007 BMW 750i\u003c\/li\u003e\n\u003cli\u003e2007 BMW 750Li\u003c\/li\u003e\n\u003cli\u003e2007 BMW Alpina B7\u003c\/li\u003e\n\u003cli\u003e2007 BMW X5\u003c\/li\u003e\n\u003cli\u003e2006 BMW 550i\u003c\/li\u003e\n\u003cli\u003e2006 BMW 650i\u003c\/li\u003e\n\u003cli\u003e2006 BMW 750i\u003c\/li\u003e\n\u003cli\u003e2006 BMW 750Li\u003c\/li\u003e\n\u003cli\u003e2006 BMW X5\u003c\/li\u003e\n\u003cli\u003e2005 BMW 545i\u003c\/li\u003e\n\u003cli\u003e2005 BMW 645Ci\u003c\/li\u003e\n\u003cli\u003e2005 BMW 745i\u003c\/li\u003e\n\u003cli\u003e2005 BMW 745Li\u003c\/li\u003e\n\u003cli\u003e2005 BMW X5\u003c\/li\u003e\n\u003cli\u003e2004 BMW 545i\u003c\/li\u003e\n\u003cli\u003e2004 BMW 645Ci\u003c\/li\u003e\n\u003cli\u003e2004 BMW 745i\u003c\/li\u003e\n\u003cli\u003e2004 BMW 745Li\u003c\/li\u003e\n\u003cli\u003e2004 BMW X5\u003c\/li\u003e\n\u003cli\u003e2003 BMW 540i\u003c\/li\u003e\n\u003cli\u003e2003 BMW 745i\u003c\/li\u003e\n\u003cli\u003e2003 BMW 745Li\u003c\/li\u003e\n\u003cli\u003e2003 BMW M5\u003c\/li\u003e\n\u003cli\u003e2003 BMW X5\u003c\/li\u003e\n\u003cli\u003e2003 BMW Z8\u003c\/li\u003e\n\u003cli\u003e2002 BMW 540i\u003c\/li\u003e\n\u003cli\u003e2002 BMW 745i\u003c\/li\u003e\n\u003cli\u003e2002 BMW 745Li\u003c\/li\u003e\n\u003cli\u003e2002 BMW M5\u003c\/li\u003e\n\u003cli\u003e2002 BMW X5\u003c\/li\u003e\n\u003cli\u003e2002 BMW Z8\u003c\/li\u003e\n\u003cli\u003e2001 BMW 540i\u003c\/li\u003e\n\u003cli\u003e2001 BMW 740i\u003c\/li\u003e\n\u003cli\u003e2001 BMW 740iL\u003c\/li\u003e\n\u003cli\u003e2001 BMW M5\u003c\/li\u003e\n\u003cli\u003e2001 BMW X5\u003c\/li\u003e\n\u003cli\u003e2001 BMW Z8\u003c\/li\u003e\n\u003cli\u003e2000 BMW 540i\u003c\/li\u003e\n\u003cli\u003e2000 BMW 740i\u003c\/li\u003e\n\u003cli\u003e2000 BMW 740iL\u003c\/li\u003e\n\u003cli\u003e2000 BMW M5\u003c\/li\u003e\n\u003cli\u003e2000 BMW X5\u003c\/li\u003e\n\u003cli\u003e2000 BMW Z8\u003c\/li\u003e\n\u003cli\u003e1999 BMW 540i\u003c\/li\u003e\n\u003cli\u003e1999 BMW 740i\u003c\/li\u003e\n\u003cli\u003e1999 BMW 740iL\u003c\/li\u003e\n\u003cli\u003e1998 BMW 540i\u003c\/li\u003e\n\u003cli\u003e1998 BMW 740i\u003c\/li\u003e\n\u003cli\u003e1998 BMW 740iL\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Walker Products","offers":[{"title":"Default Title","offer_id":58455133716783,"sku":"WPR-242-1199","price":75.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3521\/4127\/files\/242-1199_1.jpg?v=1789176211","url":"https:\/\/partspioneer.com\/products\/wpr-242-1199","provider":"Parts Pioneer","version":"1.0","type":"link"}