{"product_id":"four-seasons-74861-hvac-heater-control-valve","title":"Four Seasons 74861 HVAC Heater Control Valve - Rear","description":"\u003ch2\u003eOverview of Four Seasons Heater Valve 74861\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Valve 74861 is designed for precise temperature control in Chevrolet Astro and GMC Safari vehicles. This vacuum-operated, non-bypass heater valve ensures reliable operation within your vehicle's HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVacuum open non-bypass heater valve design\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\u003eO.E. replacement part for direct fit and function\u003c\/li\u003e\n\u003cli\u003eCompatible with Chevrolet Astro and GMC Safari models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Valve 74861 is a vacuum-operated heater control valve that regulates coolant flow to the heater core in Chevrolet Astro and GMC Safari vehicles. Featuring a non-bypass style, this valve opens via vacuum to allow hot coolant to pass through, providing effective cabin heating. Made from plastic, it includes two hose connectors sized at 0.625 inches (15.875 mm), matching original equipment specifications for seamless installation. This part is an O.E. replacement, ensuring compatibility and reliable performance within the HVAC system.\u003c\/p\u003e\u003ch2\u003eAbout the Four Seasons Heater Valve Product Line\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Valve product line focuses on temperature control components designed to maintain optimal heating performance in vehicle HVAC systems. The Heater Valve series includes vacuum-operated valves like the 74861, engineered to meet original equipment standards for fit and function. This line supports efficient temperature regulation by controlling coolant flow, contributing to consistent cabin comfort in compatible vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper heater core coolant flow in Chevrolet Astro and GMC Safari\u003c\/li\u003e\n\u003cli\u003eResolves heater valve failure causing no heat or inconsistent heating\u003c\/li\u003e\n\u003cli\u003eEliminates vacuum leaks affecting HVAC system operation\u003c\/li\u003e\n\u003cli\u003eReplaces cracked or damaged plastic heater valves\u003c\/li\u003e\n\u003cli\u003eCorrects non-bypass valve malfunctions impacting temperature control\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 hose connector sizes (0.625 inch) match vehicle hoses before installation\u003c\/li\u003e\n\u003cli\u003eInspect surrounding HVAC components for wear or damage during replacement\u003c\/li\u003e\n\u003cli\u003eFollow vehicle-specific service manual instructions for heater valve replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Heater Valve 74861 is manufactured to meet original equipment standards, providing reliable performance and durability. As an O.E. replacement part, it undergoes quality checks to ensure proper fit and function in Chevrolet Astro and GMC Safari models. Warranty coverage details should be confirmed with the product documentation or supplier.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44611176956085,"sku":"BBRN-74861","price":88.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_74861_Fro.jpg?v=1775070034","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-74861-hvac-heater-control-valve","provider":"PartCatalog","version":"1.0","type":"link"}