{"product_id":"wpr-242-1103","title":"Walker Products Ignition Knock Detonation Sensor - 242-1103","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 242-1103\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\u003eOE Replacement Sensitivity: Calibrated to match factory frequency response and output for seamless ECU integration and spark control.\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\u003cli\u003eRestores Ignition Timing Accuracy: Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.\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\u003eBuilt for Harsh Environments: Engineered to resist heat, vibration, and oil exposure for long-lasting signal reliability.\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\u003e2021 Buick Encore\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Trax\u003c\/li\u003e\n\u003cli\u003e2020 Buick Encore\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Sonic\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Trax\u003c\/li\u003e\n\u003cli\u003e2019 Buick Encore\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Sonic\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Trax\u003c\/li\u003e\n\u003cli\u003e2018 Buick Encore\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Sonic\u003c\/li\u003e\n\u003cli\u003e2018 Chevrolet Trax\u003c\/li\u003e\n\u003cli\u003e2017 Buick Encore\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Sonic\u003c\/li\u003e\n\u003cli\u003e2017 Chevrolet Trax\u003c\/li\u003e\n\u003cli\u003e2016 Buick Encore\u003c\/li\u003e\n\u003cli\u003e2016 Cadillac ELR\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Cruze Limited\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Sonic\u003c\/li\u003e\n\u003cli\u003e2016 Chevrolet Trax\u003c\/li\u003e\n\u003cli\u003e2015 Buick Encore\u003c\/li\u003e\n\u003cli\u003e2015 Cadillac ELR\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Cruze\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Sonic\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Trax\u003c\/li\u003e\n\u003cli\u003e2015 Chevrolet Volt\u003c\/li\u003e\n\u003cli\u003e2014 Buick Encore\u003c\/li\u003e\n\u003cli\u003e2014 Cadillac ELR\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Cruze\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Sonic\u003c\/li\u003e\n\u003cli\u003e2014 Chevrolet Volt\u003c\/li\u003e\n\u003cli\u003e2013 Buick Encore\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Cruze\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Sonic\u003c\/li\u003e\n\u003cli\u003e2013 Chevrolet Volt\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Cruze\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Sonic\u003c\/li\u003e\n\u003cli\u003e2012 Chevrolet Volt\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Cruze\u003c\/li\u003e\n\u003cli\u003e2011 Chevrolet Volt\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Walker Products","offers":[{"title":"Default Title","offer_id":58455123034415,"sku":"WPR-242-1103","price":40.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3521\/4127\/files\/242-1103_1.jpg?v=1789175991","url":"https:\/\/partspioneer.com\/products\/wpr-242-1103","provider":"Parts Pioneer","version":"1.0","type":"link"}