{"product_id":"four-seasons-74913-hvac-heater-control-valve","title":"Four Seasons 74913 HVAC Heater Control Valve","description":"\u003ch2\u003eOverview of Four Seasons Heater Valve 74913\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Valve 74913 is designed to regulate the flow of coolant in your vehicle's heating system. This vacuum-operated, non-bypass heater valve is an O.E. replacement part compatible with select Audi and Volkswagen models, including the A5, A5 Quattro, Q5, Q7, S4, S5, and Touareg.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVacuum closes non-bypass heater valve design\u003c\/li\u003e\n\u003cli\u003eO.E. replacement ensuring proper fit and function\u003c\/li\u003e\n\u003cli\u003eCompatible with Audi and Volkswagen models such as A5, Q5, and Touareg\u003c\/li\u003e\n\u003cli\u003ePart number 74913 for easy identification\u003c\/li\u003e\n\u003cli\u003ePart of the Four Seasons Heater Valve product line\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFour Seasons Heater Valve Product Line Details\u003c\/h2\u003e\u003cp\u003eThe Heater Valve product line from Four Seasons focuses on temperature control components that maintain efficient HVAC system operation. This line includes heater valves engineered to meet original equipment specifications, providing reliable control of coolant flow to the heater core. The 74913 model is a non-bypass valve that uses vacuum to close, ensuring precise temperature regulation in compatible Audi and Volkswagen vehicles.\u003c\/p\u003e\u003ch2\u003eProduct Description and Function\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Valve 74913 is a vacuum-operated non-bypass heater valve designed to control the flow of hot coolant to the heater core. By closing under vacuum, it effectively regulates cabin temperature by allowing or restricting coolant flow. This valve is a direct O.E. replacement, ensuring compatibility and performance for Audi and Volkswagen models such as the A5, A5 Quattro, Q5, Q7, S4, S5, and Touareg. Its non-bypass style means all coolant flows through the heater core when the valve is open, providing consistent heating performance.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper heater core coolant flow in Audi A5 and Volkswagen Touareg\u003c\/li\u003e\n\u003cli\u003eResolves heater valve failure causing no heat or inconsistent cabin temperature\u003c\/li\u003e\n\u003cli\u003eEliminates vacuum leaks affecting HVAC system operation\u003c\/li\u003e\n\u003cli\u003eReplaces faulty non-bypass heater valves in Q5 and S4 models\u003c\/li\u003e\n\u003cli\u003eImproves HVAC temperature control in Volkswagen Q7 and Audi S5 vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure vacuum lines are properly connected to the valve for correct operation\u003c\/li\u003e\n\u003cli\u003eVerify compatibility with vehicle make and model before installation\u003c\/li\u003e\n\u003cli\u003eInspect surrounding hoses and connections for wear or damage during replacement\u003c\/li\u003e\n\u003cli\u003eFollow manufacturer torque specifications when securing the valve\u003c\/li\u003e\n\u003cli\u003eTest HVAC system after installation to confirm proper heater valve function\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eFour Seasons Heater Valve 74913 is manufactured to meet or exceed original equipment standards. As an O.E. replacement part, it undergoes quality checks to ensure durability and reliable performance in Audi and Volkswagen vehicles. Warranty coverage details should be confirmed with the product supplier or manufacturer.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44611258679477,"sku":"BBRN-74913","price":62.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_74913_Fro_380dbb4d-387b-4720-920a-da6ab8ab044c.jpg?v=1775070041","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-74913-hvac-heater-control-valve","provider":"PartCatalog","version":"1.0","type":"link"}