{"product_id":"four-seasons-38663-a-c-expansion-valve","title":"Four Seasons 38663 A\/C Expansion Valve","description":"\u003ch2\u003eFour Seasons 38663 Expansion Valve Overview\u003c\/h2\u003e\u003cp\u003eThe Four Seasons 38663 A\/C expansion valve is a TXV-style HVAC flow restrictor built for R134A systems with a brass body and an 8.0 super heat setting. It is used to regulate refrigerant flow into the evaporator, helping maintain stable air conditioning performance in supported Mazda applications.\u003c\/p\u003e\u003cp\u003eCompatible With 1993-1997 Mazda 626, 1993-1997 Mazda MX-6, 1991-1995 Mazda 323, 1990-1994 Mazda Protege, and 1992-1993 Mazda MX-3.\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: 38663\u003c\/li\u003e\n\u003cli\u003eTXV design for controlled refrigerant metering\u003c\/li\u003e\n\u003cli\u003eBrass construction\u003c\/li\u003e\n\u003cli\u003eConfigured for R134A refrigerant\u003c\/li\u003e\n\u003cli\u003e8.0 super heat specification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eFour Seasons 38663 is an A\/C expansion valve for Mazda HVAC systems that use an R134A refrigerant setup. As a TXV, it meters refrigerant entering the evaporator based on system demand, which is critical for maintaining proper cooling balance. This part is listed for Mazda 626 and Mazda MX-6 models from 1993-1997, Mazda 323 from 1991-1995, Mazda Protege from 1990-1994, and Mazda MX-3 from 1992-1993. The brass valve body and 8.0 super heat specification make it a direct-fit service part for the listed applications.\u003c\/p\u003e\u003cp\u003eThis part cross-references Dorman - HELP 38663 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Part May 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 temperature instability in the A\/C system\u003c\/li\u003e\n\u003cli\u003eRestricted refrigerant flow caused by a worn expansion valve\u003c\/li\u003e\n\u003cli\u003eService replacement for Mazda A\/C repair work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the vehicle’s refrigerant type before installation; this valve is specified for R134A systems. Confirm the application by year and model before service, especially on Mazda 626, MX-6, 323, Protege, and MX-3 vehicles. Proper A\/C service procedures, evacuation, and recharge are required after replacement to restore system operation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eFour Seasons supplies HVAC service components for automotive air conditioning repair, and this expansion valve is built to match the listed application requirements for fit and refrigerant specification.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44597140619445,"sku":"BBRN-38663","price":33.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_38663_Fro.jpg?v=1775068169","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-38663-a-c-expansion-valve","provider":"PartCatalog","version":"1.0","type":"link"}