{"product_id":"wpr-242-1081","title":"Walker Products Ignition Knock Detonation Sensor - 242-1081","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 242-1081\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\u003eExact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.\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\u003eOE Replacement Sensitivity: Calibrated to match factory frequency response and output for seamless ECU integration and spark control.\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\u003eRestores Ignition Timing Accuracy: Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.\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\u003eChina\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\u003e2004 INFINITI G35\u003c\/li\u003e\n\u003cli\u003e2004 INFINITI I35\u003c\/li\u003e\n\u003cli\u003e2004 INFINITI M45\u003c\/li\u003e\n\u003cli\u003e2004 INFINITI Q45\u003c\/li\u003e\n\u003cli\u003e2004 Nissan Altima\u003c\/li\u003e\n\u003cli\u003e2003 INFINITI G35\u003c\/li\u003e\n\u003cli\u003e2003 INFINITI I35\u003c\/li\u003e\n\u003cli\u003e2003 INFINITI M45\u003c\/li\u003e\n\u003cli\u003e2003 INFINITI Q45\u003c\/li\u003e\n\u003cli\u003e2003 INFINITI QX4\u003c\/li\u003e\n\u003cli\u003e2003 Nissan Altima\u003c\/li\u003e\n\u003cli\u003e2003 Nissan Maxima\u003c\/li\u003e\n\u003cli\u003e2002 INFINITI I35\u003c\/li\u003e\n\u003cli\u003e2002 INFINITI Q45\u003c\/li\u003e\n\u003cli\u003e2002 INFINITI QX4\u003c\/li\u003e\n\u003cli\u003e2002 Nissan Altima\u003c\/li\u003e\n\u003cli\u003e2002 Nissan Maxima\u003c\/li\u003e\n\u003cli\u003e2002 Nissan Pathfinder\u003c\/li\u003e\n\u003cli\u003e2001 INFINITI I30\u003c\/li\u003e\n\u003cli\u003e2001 INFINITI QX4\u003c\/li\u003e\n\u003cli\u003e2001 Nissan Maxima\u003c\/li\u003e\n\u003cli\u003e2001 Nissan Pathfinder\u003c\/li\u003e\n\u003cli\u003e2000 INFINITI I30\u003c\/li\u003e\n\u003cli\u003e2000 Nissan Maxima\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Walker Products","offers":[{"title":"Default Title","offer_id":58455120150831,"sku":"WPR-242-1081","price":67.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3521\/4127\/files\/242-1081_1.jpg?v=1789175915","url":"https:\/\/partspioneer.com\/products\/wpr-242-1081","provider":"Parts Pioneer","version":"1.0","type":"link"}