{"product_id":"hitachi-kns0004-ignition-knock-detonation-sensor","title":"Hitachi KNS0004 Ignition Knock (Detonation) Sensor","description":"\u003ch2\u003eReliable Ignition Knock Sensor for Subaru Impreza and Legacy\u003c\/h2\u003e\u003cp\u003eThe Hitachi KNS0004 Ignition Knock (Detonation) Sensor is designed to provide accurate knock detection for Subaru Impreza and Legacy models. This sensor helps optimize engine performance by monitoring detonation and ensuring proper ignition timing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Hitachi, a trusted name in automotive sensors\u003c\/li\u003e\n\u003cli\u003ePart Number: KNS0004 for precise identification\u003c\/li\u003e\n\u003cli\u003eCompatible with Subaru Impreza and Legacy vehicles\u003c\/li\u003e\n\u003cli\u003eCategory: Emission Control \u0026gt; Sensors\u003c\/li\u003e\n\u003cli\u003eType: Ignition Knock (Detonation) Sensor for engine knock detection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Functionality\u003c\/h2\u003e\u003cp\u003eThe Hitachi KNS0004 sensor detects engine knock or detonation by sensing vibrations caused by abnormal combustion. This information is sent to the engine control unit (ECU), which adjusts ignition timing to prevent engine damage and maintain fuel efficiency. Designed specifically for Subaru Impreza and Legacy models, this sensor ensures compatibility and reliable performance within the vehicle’s emission control system.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHelps prevent engine knocking and pinging\u003c\/li\u003e\n\u003cli\u003eImproves fuel economy by optimizing ignition timing\u003c\/li\u003e\n\u003cli\u003eReduces harmful emissions by maintaining proper combustion\u003c\/li\u003e\n\u003cli\u003ePrevents potential engine damage caused by detonation\u003c\/li\u003e\n\u003cli\u003eEnsures smooth engine operation and performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Hitachi KNS0004 sensor on Subaru Impreza or Legacy models, ensure the engine is cool before beginning. Locate the existing knock sensor on the engine block, remove it carefully, and replace it with the new sensor. Verify proper electrical connections and torque specifications according to the vehicle’s service manual to ensure accurate sensor function.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eManufactured by Hitachi, the KNS0004 ignition knock sensor meets OEM standards for quality and durability. While specific warranty details are not provided, Hitachi products typically undergo rigorous testing to ensure reliable performance in emission control applications for Subaru Impreza and Legacy vehicles.\u003c\/p\u003e","brand":"Hitachi","offers":[{"title":"Default Title","offer_id":51921789616309,"sku":"BJDJ-KNS0004","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HI_KNS0004_Fro.jpg?v=1775004854","url":"https:\/\/www.partcatalog.com\/products\/hitachi-kns0004-ignition-knock-detonation-sensor","provider":"PartCatalog","version":"1.0","type":"link"}