{"product_id":"oem-goodman-piston-restrictor-kit-for-gsc130481ae-b1789882-1","title":"OEM Goodman Piston \/ Restrictor Kit for GSC130481AE — B1789882","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1789882 Piston Kit\u003c\/strong\u003e is the genuine OEM refrigerant metering device for the \u003cstrong\u003eGSC130481AE\u003c\/strong\u003e air conditioning system. The piston (also called a flow-rater or restrictor) meters the precise volume of liquid refrigerant entering the evaporator coil, creating the pressure drop that enables proper heat absorption. A correctly sized piston is critical to capacity, efficiency, and compressor protection — the wrong orifice causes flooding or starvation of the coil.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1789882\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e GSC130481AE (13 SEER condenser)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Piston \/ restrictor (fixed-orifice metering device)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman (OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Refrigerant flow control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment Type:\u003c\/strong\u003e Air Conditioner \/ Condenser\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis \u003cstrong\u003egenuine Goodman OEM piston kit\u003c\/strong\u003e is bored to the exact orifice size engineered for the GSC130481AE's capacity and refrigerant charge. Generic or mismatched pistons alter superheat\/subcooling and can damage the compressor. OEM guarantees the factory-specified metering for rated performance.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eAdvanced (Pro Required).\u003c\/strong\u003e Installation requires recovering the refrigerant, opening the liquid line at the piston housing, replacing the orifice and O-ring, evacuating, and recharging to spec — work reserved for EPA-certified technicians. Plan for full recovery\/recharge service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057197203827,"sku":"GOODMAN-729","price":10.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-piston-restrictor-kit-for-gsc130481ae-b1789882-1","provider":"National HVAC Parts","version":"1.0","type":"link"}