{"product_id":"four-seasons-39603-a-c-expansion-valve","title":"Four Seasons 39603 A\/C Expansion Valve - Front","description":"\u003ch2\u003eFour Seasons 39603 Expansion Valve for Toyota HVAC Service\u003c\/h2\u003e\u003cp\u003eFour Seasons 39603 is a block-type A\/C expansion valve built for R134A systems and aluminum HVAC components. It is an OE-style replacement that meets or exceeds OEM requirements and is listed for Toyota Sequoia and Toyota Tundra applications.\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: 39603\u003c\/li\u003e\n\u003cli\u003eBlock-type A\/C expansion valve for R134A refrigerant\u003c\/li\u003e\n\u003cli\u003eAluminum construction\u003c\/li\u003e\n\u003cli\u003eO-ring inlet and outlet connections\u003c\/li\u003e\n\u003cli\u003eFemale suction and liquid fittings\u003c\/li\u003e\n\u003cli\u003eMounting hole quantity: 2\u003c\/li\u003e\n\u003cli\u003eStyle: w\/o solenoid\u003c\/li\u003e\n\u003cli\u003eSuper heat: -4.0\u003c\/li\u003e\n\u003cli\u003eTonnage: 1.500\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThis Four Seasons expansion valve regulates refrigerant flow into the evaporator to support proper A\/C system operation. The block-style design uses No. 10 suction inlet and outlet threads, with No. 6 liquid inlet and No. 8 liquid outlet thread diameters, all in O-ring style connections for service-friendly sealing. Four Seasons 39603 is listed for 2018-2021 Toyota Tundra and 2020-2022 Toyota Sequoia front A\/C service, making it a direct-fit choice for common Toyota HVAC repairs. This part cross-references UAC EX10679C for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Repair Symptoms\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 swings in the A\/C system\u003c\/li\u003e\n\u003cli\u003eCompressor cycling caused by flow restriction issues\u003c\/li\u003e\n\u003cli\u003eHVAC performance loss after expansion valve wear or contamination\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify refrigerant type, port orientation, and mounting-hole alignment before installation. Replace damaged O-rings and evacuate and recharge the system according to factory service procedures after the repair. Confirm the vehicle application by year, model, and position: Fits 2018-2021 Toyota Tundra, N\/A; Fits 2020-2022 Toyota Sequoia, Front.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eFour Seasons 39603 is engineered to meet or exceed OEM requirements for fit and function in the listed Toyota applications. The aluminum, O-ring, block-type design supports consistent service replacement for R134A HVAC systems.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44599777460405,"sku":"BBRN-39603","price":41.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_39603_Fro.jpg?v=1775068351","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-39603-a-c-expansion-valve","provider":"PartCatalog","version":"1.0","type":"link"}