{"product_id":"wpr-242-1391","title":"Walker Products Ignition Knock Detonation Sensor - 242-1391","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 242-1391\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\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\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\u003c\/ul\u003e\u003ch2\u003eWarranty\u003c\/h2\u003e\u003cp\u003e1 years\u003c\/p\u003e\u003ch2\u003eCountry of Origin\u003c\/h2\u003e\u003cp\u003eJapan\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\u003e2025 Buick Encore GX\u003c\/li\u003e\n\u003cli\u003e2025 Buick Envision\u003c\/li\u003e\n\u003cli\u003e2025 Cadillac CT4\u003c\/li\u003e\n\u003cli\u003e2025 Cadillac CT5\u003c\/li\u003e\n\u003cli\u003e2025 Cadillac XT4\u003c\/li\u003e\n\u003cli\u003e2025 Cadillac XT5\u003c\/li\u003e\n\u003cli\u003e2025 Cadillac XT6\u003c\/li\u003e\n\u003cli\u003e2025 Chevrolet Blazer\u003c\/li\u003e\n\u003cli\u003e2025 Chevrolet Colorado\u003c\/li\u003e\n\u003cli\u003e2025 Chevrolet Silverado 1500\u003c\/li\u003e\n\u003cli\u003e2025 Chevrolet Trailblazer\u003c\/li\u003e\n\u003cli\u003e2025 Chevrolet Traverse\u003c\/li\u003e\n\u003cli\u003e2025 GMC Acadia\u003c\/li\u003e\n\u003cli\u003e2025 GMC Canyon\u003c\/li\u003e\n\u003cli\u003e2025 GMC Sierra 1500\u003c\/li\u003e\n\u003cli\u003e2024 Buick Encore GX\u003c\/li\u003e\n\u003cli\u003e2024 Buick Envision\u003c\/li\u003e\n\u003cli\u003e2024 Cadillac CT4\u003c\/li\u003e\n\u003cli\u003e2024 Cadillac CT5\u003c\/li\u003e\n\u003cli\u003e2024 Cadillac XT4\u003c\/li\u003e\n\u003cli\u003e2024 Cadillac XT5\u003c\/li\u003e\n\u003cli\u003e2024 Cadillac XT6\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Blazer\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Colorado\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Silverado 1500\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Trailblazer\u003c\/li\u003e\n\u003cli\u003e2024 Chevrolet Traverse\u003c\/li\u003e\n\u003cli\u003e2024 GMC Acadia\u003c\/li\u003e\n\u003cli\u003e2024 GMC Canyon\u003c\/li\u003e\n\u003cli\u003e2024 GMC Sierra 1500\u003c\/li\u003e\n\u003cli\u003e2023 Buick Encore GX\u003c\/li\u003e\n\u003cli\u003e2023 Buick Envision\u003c\/li\u003e\n\u003cli\u003e2023 Cadillac CT4\u003c\/li\u003e\n\u003cli\u003e2023 Cadillac CT5\u003c\/li\u003e\n\u003cli\u003e2023 Cadillac XT4\u003c\/li\u003e\n\u003cli\u003e2023 Cadillac XT5\u003c\/li\u003e\n\u003cli\u003e2023 Cadillac XT6\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Blazer\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Colorado\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Silverado 1500\u003c\/li\u003e\n\u003cli\u003e2023 Chevrolet Trailblazer\u003c\/li\u003e\n\u003cli\u003e2023 GMC Acadia\u003c\/li\u003e\n\u003cli\u003e2023 GMC Canyon\u003c\/li\u003e\n\u003cli\u003e2023 GMC Sierra 1500\u003c\/li\u003e\n\u003cli\u003e2022 Buick Encore GX\u003c\/li\u003e\n\u003cli\u003e2022 Buick Envision\u003c\/li\u003e\n\u003cli\u003e2022 Cadillac CT4\u003c\/li\u003e\n\u003cli\u003e2022 Cadillac CT5\u003c\/li\u003e\n\u003cli\u003e2022 Cadillac XT4\u003c\/li\u003e\n\u003cli\u003e2022 Cadillac XT5\u003c\/li\u003e\n\u003cli\u003e2022 Cadillac XT6\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Blazer\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Silverado 1500\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Silverado 1500 LTD\u003c\/li\u003e\n\u003cli\u003e2022 Chevrolet Trailblazer\u003c\/li\u003e\n\u003cli\u003e2022 GMC Acadia\u003c\/li\u003e\n\u003cli\u003e2022 GMC Sierra 1500\u003c\/li\u003e\n\u003cli\u003e2022 GMC Sierra 1500 Limited\u003c\/li\u003e\n\u003cli\u003e2021 Buick Encore GX\u003c\/li\u003e\n\u003cli\u003e2021 Buick Envision\u003c\/li\u003e\n\u003cli\u003e2021 Cadillac CT4\u003c\/li\u003e\n\u003cli\u003e2021 Cadillac CT5\u003c\/li\u003e\n\u003cli\u003e2021 Cadillac XT4\u003c\/li\u003e\n\u003cli\u003e2021 Cadillac XT5\u003c\/li\u003e\n\u003cli\u003e2021 Cadillac XT6\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Blazer\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Silverado 1500\u003c\/li\u003e\n\u003cli\u003e2021 Chevrolet Trailblazer\u003c\/li\u003e\n\u003cli\u003e2021 GMC Acadia\u003c\/li\u003e\n\u003cli\u003e2021 GMC Sierra 1500\u003c\/li\u003e\n\u003cli\u003e2020 Buick Encore GX\u003c\/li\u003e\n\u003cli\u003e2020 Cadillac CT4\u003c\/li\u003e\n\u003cli\u003e2020 Cadillac CT5\u003c\/li\u003e\n\u003cli\u003e2020 Cadillac XT4\u003c\/li\u003e\n\u003cli\u003e2020 Cadillac XT5\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Blazer\u003c\/li\u003e\n\u003cli\u003e2020 Chevrolet Silverado 1500\u003c\/li\u003e\n\u003cli\u003e2020 GMC Acadia\u003c\/li\u003e\n\u003cli\u003e2020 GMC Sierra 1500\u003c\/li\u003e\n\u003cli\u003e2019 Cadillac CT6\u003c\/li\u003e\n\u003cli\u003e2019 Cadillac XT4\u003c\/li\u003e\n\u003cli\u003e2019 Chevrolet Silverado 1500\u003c\/li\u003e\n\u003cli\u003e2019 GMC Sierra 1500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Walker Products","offers":[{"title":"Default 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