{"product_id":"four-seasons-74646-hvac-heater-control-valve","title":"Four Seasons 74646 HVAC Heater Control Valve","description":"\u003ch2\u003eOverview of Four Seasons Heater Valve 74646 for Toyota Sienna\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Valve 74646 is a cable-operated, non-bypass heater valve designed specifically for Toyota Sienna models. This HVAC heater control valve ensures precise temperature regulation by controlling coolant flow within the heating system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCable operated open non-bypass heater valve\u003c\/li\u003e\n\u003cli\u003eConstructed from durable plastic material\u003c\/li\u003e\n\u003cli\u003eIncludes 2 hose connectors with 0.625 inch (15.875 mm) openings\u003c\/li\u003e\n\u003cli\u003eOEM replacement part for reliable fit and function\u003c\/li\u003e\n\u003cli\u003eCompatible with Toyota Sienna vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Valve 74646 belongs to the Heater Valve product line, which focuses on temperature control components within automotive HVAC systems. This particular valve operates via a cable mechanism, allowing it to open and close without bypassing the heater core. Made from plastic, it features two hose connectors each measuring 0.625 inches (15.875 mm) in diameter, ensuring compatibility with the original equipment specifications. As an OEM replacement, it matches the fit and function of the original heater valve installed in Toyota Sienna models, providing consistent performance in regulating cabin temperature.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRegulates coolant flow to the heater core for effective cabin heating\u003c\/li\u003e\n\u003cli\u003eReplaces faulty or leaking heater valves causing inconsistent temperature control\u003c\/li\u003e\n\u003cli\u003eSolves issues related to heater core bypass or failure to open\/close properly\u003c\/li\u003e\n\u003cli\u003ePrevents coolant leaks that can lead to engine overheating\u003c\/li\u003e\n\u003cli\u003eRestores proper HVAC system operation in Toyota Sienna vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure vehicle compatibility with Toyota Sienna before installation\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery and allow the engine to cool before replacing the valve\u003c\/li\u003e\n\u003cli\u003eCarefully remove old heater valve and inspect hoses for wear or damage\u003c\/li\u003e\n\u003cli\u003eInstall the Four Seasons Heater Valve 74646 by connecting the two hose connectors securely\u003c\/li\u003e\n\u003cli\u003eTest cable operation to confirm smooth opening and closing of the valve\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eFour Seasons manufactures the Heater Valve 74646 to meet OEM standards, ensuring reliable performance and durability. This part is designed as a direct replacement for the original heater valve in Toyota Sienna models. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44610995912885,"sku":"BBRN-74646","price":48.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_74646_Fro.jpg?v=1775070015","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-74646-hvac-heater-control-valve","provider":"PartCatalog","version":"1.0","type":"link"}