{"product_id":"four-seasons-39421-a-c-expansion-valve-front","title":"Four Seasons 39421 A\/C Expansion Valve - Front","description":"\u003ch2\u003eFour Seasons 39421 Expansion Valve Overview\u003c\/h2\u003e\u003cp\u003eFour Seasons 39421 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 through the evaporator circuit for stable cabin cooling performance.\u003c\/p\u003e\u003cp\u003eFor buyers searching for an A\/C expansion valve for Honda Civic or Toyota Corolla HVAC repair, this Four Seasons Expansion Valve line provides a direct-service replacement format with sealing-washer connections and a 2.000 tonnage rating.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number 39421 from Four Seasons Expansion Valve\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 suction and liquid fittings with sealing washer style connections\u003c\/li\u003e\n\u003cli\u003e2 mounting holes for secure installation\u003c\/li\u003e\n\u003cli\u003eSuper heat setting: 8.5\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications\u003c\/li\u003e\n\u003cli\u003eStyle: without solenoid\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThe Four Seasons 39421 expansion valve meters refrigerant entering the evaporator so the HVAC system can maintain proper cooling balance. Its block-type design, female inlet and outlet fittings, and sealing-washer interfaces support service replacement in R134A air conditioning systems. This part number 39421 is a practical choice when replacing a worn or restricted valve in a Honda Civic, Toyota Corolla, or other vehicle using the same application.\u003c\/p\u003e\u003cp\u003eThis part cross-references UAC EX10424C for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Part Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWeak or inconsistent A\/C vent temperatures\u003c\/li\u003e\n\u003cli\u003eRefrigerant flow restriction at the evaporator\u003c\/li\u003e\n\u003cli\u003eCompressor cycling caused by improper metering\u003c\/li\u003e\n\u003cli\u003eHVAC performance loss from a sticking expansion valve\u003c\/li\u003e\n\u003cli\u003eCooling imbalance after A\/C system service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify refrigerant type, fitting style, and port sizes before installation. This valve uses female suction and liquid connections with No. 10, No. 12, and No. 8 thread diameters as listed, along with sealing washer style interfaces. Replace any contaminated system components as needed, evacuate the system properly, and recharge with the correct R134A specification after service. Confirm the vehicle application against the original valve layout before final assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eFour Seasons manufactures HVAC service parts to OE-style standards, and this 39421 expansion valve is listed as meeting or exceeding OEM requirements for the specified application.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":51967378030773,"sku":"BBRN-39421","price":118.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_39421_Fro.jpg?v=1775068297","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-39421-a-c-expansion-valve-front","provider":"PartCatalog","version":"1.0","type":"link"}