{"product_id":"oem-goodman-piston-kit-for-asz130361ag-b1789868","title":"OEM Goodman Piston Kit for ASZ130361AG — B1789868","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1789868 Piston Kit\u003c\/strong\u003e is a genuine OEM refrigerant metering device (flowrator) sized for the \u003cstrong\u003eASZ130361AG\u003c\/strong\u003e heat pump. The piston meters liquid refrigerant into the coil at the precise rate the system was designed for, ensuring correct superheat, subcooling, and rated capacity.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1789868\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Fixed-orifice piston \/ flowrator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Refrigerant metering device\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e ASZ130361AG (3-ton heat pump)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Refrigerant:\u003c\/strong\u003e R-410A systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Piston and seal for the metering port\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003ePiston bore size is critical — even a few thousandths of an inch off changes the refrigerant flow and throws off system charge, hurting efficiency and comfort. The genuine OEM B1789868 is bored to Goodman's exact specification for the ASZ130361AG, eliminating the guesswork of matching a universal piston chart. For a low-cost part that directly controls system performance, OEM is the safe choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Advanced\u003c\/h3\u003e\u003cp\u003eReplacing a piston requires opening the sealed refrigerant circuit. This is a job for an EPA 608–certified technician: the system must be recovered, the connection opened, the old piston removed, the new one seated with a fresh seal, and the system evacuated and recharged to spec. Do not attempt without proper recovery equipment and certification.\u003c\/p\u003e\u003cp\u003eKeep your Goodman heat pump metering refrigerant exactly as engineered with this genuine OEM piston kit.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058308727155,"sku":"GOODMAN-16247","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-piston-kit-for-asz130361ag-b1789868","provider":"National HVAC Parts","version":"1.0","type":"link"}