{"product_id":"oem-goodman-piston-flowrator-kit-for-gsc130481ab-b1789882-1","title":"OEM Goodman Piston \/ Flowrator Kit for GSC130481AB — B1789882","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1789882\u003c\/strong\u003e is a genuine OEM piston (flowrator) metering kit for the \u003cstrong\u003eGSC130481AB\u003c\/strong\u003e 13 SEER, 4-ton outdoor condensing unit. The piston is a fixed-orifice metering device that controls the precise rate of refrigerant entering the evaporator coil. Using the correct, factory-matched orifice size is critical — the wrong bore starves or floods the coil, killing efficiency and risking compressor damage.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Fixed-orifice piston \/ flowrator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Refrigerant metering at the coil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GSC130481AB and matching 13 SEER 4-ton systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefrigerant:\u003c\/strong\u003e Sized for the OEM system charge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit:\u003c\/strong\u003e Piston insert with seal\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e Orifice diameter is matched to the exact tonnage and SEER rating of this system. A genuine Goodman piston guarantees the correct bore size; mismatched aftermarket pistons can shift superheat and subcooling out of spec, causing poor cooling and short-cycling. For metering devices, OEM accuracy is non-negotiable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall difficulty:\u003c\/strong\u003e Hard. Installing a piston requires recovering the refrigerant charge, opening the line set or coil connection, replacing the insert, then evacuating and recharging the system. This is EPA-certified technician work only.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057194582387,"sku":"GOODMAN-714","price":10.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-piston-flowrator-kit-for-gsc130481ab-b1789882-1","provider":"National HVAC Parts","version":"1.0","type":"link"}