{"product_id":"four-seasons-39110-a-c-expansion-valve","title":"Four Seasons 39110 A\/C Expansion Valve - Rear","description":"\u003ch2\u003eFour Seasons 39110 Expansion Valve Overview\u003c\/h2\u003e\u003cp\u003eFour Seasons 39110 is a block-type A\/C expansion valve for R134A systems, built with an aluminum body and OE-style insert O-ring connections. It is specified for rear HVAC service on select Oldsmobile, Pontiac, and Pontiac minivan applications, including 1997-2000 Oldsmobile Silhouette, 1999-2000 Pontiac Montana, and 1997-1998 Pontiac Trans Sport.\u003c\/p\u003e\u003cp\u003eAs part of the Four Seasons Expansion Valve line, this component is made for precise refrigerant metering in the rear air conditioning circuit. The design meets or exceeds OEM requirements and uses the correct inlet and outlet port sizing for direct replacement service.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: 39110\u003c\/li\u003e\n\u003cli\u003eFour Seasons Expansion Valve line\u003c\/li\u003e\n\u003cli\u003eBlock-type A\/C expansion valve\u003c\/li\u003e\n\u003cli\u003eAluminum construction with gold finish\u003c\/li\u003e\n\u003cli\u003eR134A refrigerant system application\u003c\/li\u003e\n\u003cli\u003eRear HVAC position\u003c\/li\u003e\n\u003cli\u003eFemale FIO insert O-ring liquid and suction connections\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications\u003c\/li\u003e\n\u003cli\u003eOE-style fitment for rear A\/C service on Oldsmobile Silhouette, Pontiac Montana, and Pontiac Trans Sport\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eFour Seasons 39110 regulates refrigerant flow into the evaporator to help maintain proper system pressure and cooling performance in rear air conditioning setups. The valve is configured without a solenoid and uses factory-style port dimensions, including No. 10 suction inlet, No. 12 suction outlet, No. 6 liquid inlet, and No. 8 liquid outlet thread diameters. It also includes the specified green O-ring sealing points for the listed application.\u003c\/p\u003e\u003cp\u003eThis part cross-references UAC EX5596C for the same application. If you are servicing a 1997-2000 Oldsmobile Silhouette rear A\/C system, a 1999-2000 Pontiac Montana rear HVAC circuit, or a 1997-1998 Pontiac Trans Sport rear expansion valve, Four Seasons 39110 provides the correct replacement format for those vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Part Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRear A\/C air that is not cooling properly\u003c\/li\u003e\n\u003cli\u003eRefrigerant flow restriction at the evaporator inlet\u003c\/li\u003e\n\u003cli\u003eIncorrect system pressure caused by a worn expansion valve\u003c\/li\u003e\n\u003cli\u003eUneven rear cabin temperature control\u003c\/li\u003e\n\u003cli\u003eLeak concerns at the valve-to-line sealing surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the vehicle’s rear HVAC configuration, refrigerant type, and port style before installation. Replace the valve only after the system has been properly recovered and inspected, and confirm that the mating lines and sealing surfaces are clean and undamaged. Use the correct service procedures for R134A systems and check for proper operation after evacuation and recharge.\u003c\/p\u003e\u003cp\u003eFits 1997-2000 Oldsmobile Silhouette, rear. Fits 1999-2000 Pontiac Montana, rear. Fits 1997-1998 Pontiac Trans Sport, rear.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eFour Seasons 39110 is listed as meeting or exceeding OEM requirements for the specified applications, supporting direct replacement service in rear A\/C systems.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44599669653685,"sku":"BBRN-39110","price":46.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_39110_Fro.jpg?v=1775068221","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-39110-a-c-expansion-valve","provider":"PartCatalog","version":"1.0","type":"link"}