{"product_id":"oem-goodman-piston-kit-for-gmp100-5-furnace-b1789876","title":"OEM Goodman Piston Kit for GMP100-5 Furnace — B1789876","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1789876 Piston Kit\u003c\/strong\u003e is a genuine OEM metering component engineered for the Goodman \u003cstrong\u003eGMP100-5\u003c\/strong\u003e furnace. This kit delivers the precise, calibrated orifice sizing required to maintain correct fuel\/refrigerant flow, ensuring stable operation and rated efficiency. Installing a factory-matched piston kit protects your equipment from the flow imbalances and premature wear that off-spec substitutes can cause.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1789876\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Piston \/ metering device kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman (OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Model:\u003c\/strong\u003e GMP100-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment Type:\u003c\/strong\u003e Gas Furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit:\u003c\/strong\u003e Direct replacement — no modification required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOur \u003cstrong\u003eOEM\u003c\/strong\u003e option is the exact Goodman-manufactured part, guaranteeing bore tolerance and material spec straight from the factory. Our \u003cstrong\u003eGeneric\u003c\/strong\u003e equivalent is a lower-cost aftermarket alternative built to matching dimensions — a smart pick for budget repairs where an exact OEM stamp isn't required. Both are tested for correct fit on the GMP100-5.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eRating: Moderate (2\/3).\u003c\/strong\u003e Replacement involves accessing the metering assembly and correctly seating the piston. We strongly recommend a qualified HVAC technician perform this service, as improper installation can affect furnace performance and safety. Always disconnect power and gas before servicing.\u003c\/p\u003e\u003cp\u003eShips fast from stock. Backed by our fit guarantee for the GMP100-5 platform.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058137219443,"sku":"GOODMAN-11895","price":16.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-piston-kit-for-gmp100-5-furnace-b1789876","provider":"National HVAC Parts","version":"1.0","type":"link"}