{"product_id":"oem-goodman-piston-kit-for-gmpv100-3-furnace-b1789868","title":"OEM Goodman Piston Kit for GMPV100-3 Furnace — B1789868","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1789868 Piston Kit\u003c\/strong\u003e is a genuine OEM replacement designed for the \u003cstrong\u003eGMPV100-3\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. The piston (orifice) meters the precise flow of gas to the burners, and using the correct orifice size is critical for safe, efficient combustion and proper flame characteristics.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1789868\u003c\/li\u003e\n\u003cli\u003ePart Type: Piston \/ Burner Orifice Kit\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas Furnace\u003c\/li\u003e\n\u003cli\u003ePrimary Fit: GMPV100-3\u003c\/li\u003e\n\u003cli\u003eMaterial: Machined brass\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman B1789868\u003c\/strong\u003e is factory-drilled to the exact orifice diameter specified for your furnace's BTU rating and fuel type, guaranteeing correct gas metering and warranty compliance. A quality \u003cstrong\u003egeneric equivalent\u003c\/strong\u003e offers a budget-friendly alternative with comparable dimensions, though we recommend verifying the drill size against your original before installation. Both options are dependable, but the OEM kit is the safest choice for exact combustion performance.\u003c\/p\u003e\u003ch3\u003eWhy It Fails\u003c\/h3\u003e\u003cp\u003eOrifices can become clogged with debris or corrosion over time, causing weak or uneven flames, delayed ignition, or sooting. Replacing the piston kit restores the manufacturer-specified gas flow.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eThis is a straightforward replacement for a technician or handy homeowner. Shut off gas and power, remove the burner assembly, swap the orifice, and reassemble. \u003cstrong\u003eAlways have gas connections leak-checked after service.\u003c\/strong\u003e Estimated time: 20–30 minutes. Professional installation is recommended for any gas appliance work.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058151276915,"sku":"GOODMAN-12145","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-piston-kit-for-gmpv100-3-furnace-b1789868","provider":"National HVAC Parts","version":"1.0","type":"link"}