{"product_id":"four-seasons-39420-a-c-expansion-valve-front","title":"Four Seasons 39420 A\/C Expansion Valve - Front","description":"\u003ch2\u003eFour Seasons 39420 Expansion Valve Overview\u003c\/h2\u003e\u003cp\u003eFour Seasons 39420 is a block-type A\/C expansion valve for R134A systems. Built from aluminum and engineered to meet or exceed OEM requirements, it regulates refrigerant flow to support stable evaporator performance in the HVAC system.\u003c\/p\u003e\u003cp\u003eFor technicians and owners searching for an A\/C expansion valve for Honda Civic, Toyota Corolla, or similar R134A applications, Four Seasons 39420 provides the correct block-style layout with female O-ring connections and OE-style fitment details.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: Four Seasons Expansion Valve\u003c\/li\u003e\n\u003cli\u003ePart number: 39420\u003c\/li\u003e\n\u003cli\u003eBlock-type A\/C expansion valve for R134A refrigerant\u003c\/li\u003e\n\u003cli\u003eAluminum construction with aluminum finish\u003c\/li\u003e\n\u003cli\u003eFemale insert O-ring liquid and suction connections\u003c\/li\u003e\n\u003cli\u003eLiquid inlet\/outlet sizes: 0.41 in (10.3 mm) and 0.53 in (13.4 mm)\u003c\/li\u003e\n\u003cli\u003eSuction inlet\/outlet sizes: 0.53 in (13.4 mm) and 0.64 in (16.2 mm)\u003c\/li\u003e\n\u003cli\u003eSuper heat setting: 4.5\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications\u003c\/li\u003e\n\u003cli\u003eStyle: w\/o solenoid\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Expansion Valve line focuses on refrigerant metering components that match OE-style service requirements. This 39420 valve uses a block configuration with female insert O-ring ports for the liquid and suction sides, making it a direct-spec replacement for systems that require precise refrigerant control at the evaporator. The 1.500 tonnage rating and 4.5 super heat setting support proper system balance in R134A HVAC setups.\u003c\/p\u003e\u003cp\u003eCross-reference part numbers include 123024A and 540044BSM for the same application. Four Seasons 39420 is a practical choice when replacing a worn or restricted expansion valve in Honda Civic, Toyota Corolla, and other vehicles using the same block-type layout.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Part Can Address\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\u003eFrosting or uneven A\/C performance caused by flow restriction\u003c\/li\u003e\n\u003cli\u003eCompressor cycling issues related to refrigerant control\u003c\/li\u003e\n\u003cli\u003eService replacement for a leaking or sticking expansion valve\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify refrigerant type, port sizes, and block-style configuration before installation. Inspect mating surfaces and O-rings, and confirm the system is clean and properly evacuated before recharging. This valve does not include a switch.\u003c\/p\u003e\u003cp\u003eUse the vehicle service information for the exact A\/C system layout and confirm the part number 39420 against the original component before assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eFour Seasons 39420 is built to meet or exceed OEM specifications for A\/C service applications. The aluminum construction and OE-style connection design support consistent replacement quality for professional HVAC repairs.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":51967377965237,"sku":"BBRN-39420","price":56.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_39420_Fro.jpg?v=1775068296","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-39420-a-c-expansion-valve-front","provider":"PartCatalog","version":"1.0","type":"link"}