{"product_id":"four-seasons-39540-a-c-expansion-valve","title":"Four Seasons 39540 A\/C Expansion Valve","description":"\u003ch2\u003eFour Seasons 39540 Expansion Valve for Mustang A\/C Service\u003c\/h2\u003e\u003cp\u003eRestore refrigerant control in the air conditioning system with the Four Seasons Expansion Valve, part number 39540. This block-type A\/C expansion valve is built for R134A systems and is listed for Ford Mustang applications from 2015-2023, including 2018-2021 Mustang models with R134a.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFour Seasons Expansion Valve, part number 39540\u003c\/li\u003e\n\u003cli\u003eBlock type A\/C expansion valve for HVAC flow restriction control\u003c\/li\u003e\n\u003cli\u003eAluminum construction with aluminum finish\u003c\/li\u003e\n\u003cli\u003eR134A refrigerant type\u003c\/li\u003e\n\u003cli\u003eStyle: w\/o solenoid\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM requirements\u003c\/li\u003e\n\u003cli\u003e1.5 tonnage rating\u003c\/li\u003e\n\u003cli\u003eSuper heat setting: -9.0\u003c\/li\u003e\n\u003cli\u003eFemale suction and liquid fittings with sealing washer connections\u003c\/li\u003e\n\u003cli\u003eMounting hole quantity: 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThe Four Seasons 39540 expansion valve regulates refrigerant flow into the evaporator to support proper A\/C system operation in Ford Mustang HVAC systems. It uses female suction and liquid inlet and outlet fittings with sealing washer interfaces, and its block-type aluminum design is specified for R134A service. This part cross-references Global Parts Distributors LLC 3411615 for the same application.\u003c\/p\u003e\u003cp\u003eCompatible With Ford Mustang A\/C systems across 2015-2017 Mustang, 2018-2021 Mustang with R134a, and 2022-2023 Mustang expansion valve applications. The Four Seasons 39540 is also referenced under OE-style numbers including FR3Z19849B and FR3Z19849C.\u003c\/p\u003e\u003ch2\u003eCommon Replacement Reasons\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWeak or inconsistent cabin cooling\u003c\/li\u003e\n\u003cli\u003eIncorrect refrigerant metering at the evaporator\u003c\/li\u003e\n\u003cli\u003eA\/C performance changes during load or temperature swings\u003c\/li\u003e\n\u003cli\u003eLeaking or worn expansion valve sealing surfaces\u003c\/li\u003e\n\u003cli\u003eService replacement for R134A Mustang HVAC repairs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify refrigerant type, fitting sizes, and mounting points before installation. This valve uses sealing washer connections and a block-style layout, so the mating surfaces should be clean and properly seated during service. Confirm the vehicle is equipped for R134A and match the application to the correct Mustang model year range before reassembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eFour Seasons lists this expansion valve as meeting or exceeding OEM requirements, making it a direct-fit service part for confirmed Mustang applications.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44599751639221,"sku":"BBRN-39540","price":31.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_39540_Fro.jpg?v=1775068331","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-39540-a-c-expansion-valve","provider":"PartCatalog","version":"1.0","type":"link"}