{"product_id":"oem-goodman-refrigerant-piston-flowrator-kit-for-ssx140181ba-b1789853-1","title":"OEM Goodman Refrigerant Piston \/ Flowrator Kit for SSX140181BA — B1789853","description":"\u003ch2\u003eGoodman B1789853 Piston \/ Flowrator Kit\u003c\/h2\u003e\u003cp\u003eThe B1789853 is the genuine OEM refrigerant metering piston (flowrator) kit for the Goodman \u003cstrong\u003eSSX140181BA\u003c\/strong\u003e R-410A condensing unit. The piston meters refrigerant flow into the indoor coil, setting the correct pressure drop and superheat for the matched system. Using the factory-specified orifice size is critical: an incorrect piston causes poor cooling, flooding, or compressor damage. This kit delivers the exact bore Goodman engineered for this 1.5-ton condenser.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart type:\u003c\/strong\u003e Fixed-orifice metering piston (flowrator) kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e B1789853\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits model:\u003c\/strong\u003e Goodman SSX140181BA condensing unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefrigerant:\u003c\/strong\u003e R-410A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Factory-sized piston for correct charge balancing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eMetering pistons are size-critical. The genuine B1789853 is bored to Goodman's exact specification for this model, so superheat and subcooling land in range during charging. Generic or mismatched pistons force technicians to chase symptoms and risk under- or over-feeding the evaporator. For predictable performance, use the OEM kit.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: Advanced (4\/5).\u003c\/strong\u003e Replacing the piston requires recovering the system refrigerant, opening the liquid-line piston housing, swapping the orifice, evacuating to vacuum, and recharging by weight. This is EPA Section 608 certified work and should be performed by a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057204085107,"sku":"GOODMAN-847","price":10.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-refrigerant-piston-flowrator-kit-for-ssx140181ba-b1789853-1","provider":"National HVAC Parts","version":"1.0","type":"link"}