{"product_id":"nissens-999959-a-c-expansion-valve-front","title":"Nissens 999959 A\/C Expansion Valve - Front","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThis Nissens A\/C expansion valve is a block-style HVAC flow restrictor built for R134 refrigerant systems. It is engineered to OE-matching standards for pressure performance, tightness, opening behavior, and internal finish, making it a direct service part for Toyota and Lexus climate control repairs.\u003c\/p\u003e\u003cp\u003ePart number 999959 is an aluminum expansion valve with included O-rings and mounting bolts whenever applicable. It is a practical replacement for Toyota 4Runner and Lexus GX460 applications that require accurate refrigerant metering in the A\/C system.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBlock-style A\/C expansion valve for R134 refrigerant systems\u003c\/li\u003e\n\u003cli\u003eAluminum construction for HVAC service applications\u003c\/li\u003e\n\u003cli\u003eBuilt to OE-matching standards for pressure and flow control\u003c\/li\u003e\n\u003cli\u003eIncludes O-rings and mounting bolts whenever applicable\u003c\/li\u003e\n\u003cli\u003ePart number 999959 for catalog and service reference\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2018-2020 Lexus GX460, front, w\/ Dual Climate Control\u003c\/li\u003e\n\u003cli\u003eFits 2015-2020 Toyota 4Runner, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2016-2017 Lexus GX460, front, w\/o Dual Zone Climate Control\u003c\/li\u003e\n\u003cli\u003eFits 2015 Lexus GX460, front\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Helps Fix\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInconsistent evaporator refrigerant metering\u003c\/li\u003e\n\u003cli\u003eWeak or uneven cabin cooling output\u003c\/li\u003e\n\u003cli\u003eExpansion valve leakage at the HVAC circuit\u003c\/li\u003e\n\u003cli\u003eImproper system pressure control during A\/C operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify refrigerant type, valve style, and vehicle climate-control configuration before installation. Replace the O-rings during service and follow proper evacuation and recharge procedures after the system is opened. Confirm the part number 999959 against the original component before assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNissens validates these thermal expansion valves through testing for pressure performance, tightness, opening characteristics, set-point accuracy, and internal finish. The result is a service part produced to precise OE-matching standards for Toyota 4Runner and Lexus GX460 HVAC repairs.\u003c\/p\u003e","brand":"Nissens","offers":[{"title":"Default Title","offer_id":53506954625205,"sku":"BKMH-999959","price":26.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/N1_999959_FRO.jpg?v=1791782844","url":"https:\/\/www.partcatalog.com\/products\/nissens-999959-a-c-expansion-valve-front","provider":"PartCatalog","version":"1.0","type":"link"}