{"product_id":"facet-9-3171-ignition-knock-detonation-sensor","title":"Facet 9.3171 Ignition Knock (Detonation) Sensor","description":"\u003ch2\u003eReliable Ignition Knock Sensor for Audi and Volkswagen Models\u003c\/h2\u003e\u003cp\u003eThe Facet 9.3171 Ignition Knock (Detonation) Sensor is designed to provide accurate knock detection for select Audi and Volkswagen vehicles. This sensor helps maintain engine performance by detecting abnormal combustion and allowing the engine control unit to adjust timing accordingly.\u003c\/p\u003e\u003ch2\u003eKey Features of Facet 9.3171 Knock Sensor\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Audi A6 Quattro, A8 Quattro, R8, RS4, RS5, S5 and Volkswagen Phaeton, Q7, Touareg models\u003c\/li\u003e\n\u003cli\u003ePrecision detection of engine knock for optimized ignition timing\u003c\/li\u003e\n\u003cli\u003eDurable construction to withstand engine heat and vibration\u003c\/li\u003e\n\u003cli\u003eDirect replacement part number 9.3171 for easy installation\u003c\/li\u003e\n\u003cli\u003eEnsures proper engine management and emission control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Facet 9.3171 ignition knock sensor is engineered to detect detonation or knocking within the engine cylinders of compatible Audi and Volkswagen vehicles. By sensing vibrations caused by abnormal combustion, it sends signals to the engine control module to adjust ignition timing and prevent engine damage. This sensor is essential for maintaining engine efficiency, reducing emissions, and protecting internal components. It is a direct fit replacement for the original equipment sensor, ensuring proper fit and function without modification.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents engine knocking and pinging in Audi A6 Quattro and Volkswagen Touareg\u003c\/li\u003e\n\u003cli\u003eHelps maintain smooth engine performance in Audi RS4 and RS5 models\u003c\/li\u003e\n\u003cli\u003eSupports emission control systems in Volkswagen Phaeton and Q7\u003c\/li\u003e\n\u003cli\u003eReduces risk of engine damage due to detonation in Audi S5 and A8 Quattro\u003c\/li\u003e\n\u003cli\u003eImproves fuel efficiency by enabling accurate ignition timing adjustments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure engine is cool before sensor replacement to avoid injury\u003c\/li\u003e\n\u003cli\u003eLocate the knock sensor on the engine block as specified in the vehicle service manual\u003c\/li\u003e\n\u003cli\u003eUse proper torque specifications when installing to prevent sensor damage\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery before installation to avoid electrical issues\u003c\/li\u003e\n\u003cli\u003eVerify sensor connector is clean and securely attached after installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eFacet manufactures the 9.3171 ignition knock sensor to meet or exceed OEM standards for durability and performance. Each sensor undergoes rigorous testing to ensure reliable operation under demanding engine conditions. While specific warranty terms may vary, Facet typically offers a limited warranty covering defects in materials and workmanship to provide confidence in product quality.\u003c\/p\u003e","brand":"Facet","offers":[{"title":"Default Title","offer_id":43796543242421,"sku":"CHMT-9.3171","price":54.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FT_93171_Fro_61bce3ef-853a-4efe-a17c-f00a9caedf18.jpg?v=1774998205","url":"https:\/\/www.partcatalog.com\/products\/facet-9-3171-ignition-knock-detonation-sensor","provider":"PartCatalog","version":"1.0","type":"link"}