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The Goodman 0154F00004 is a genuine OEM high-temperature gasket cut to seal a critical joint in the ADSS800804BXAA gas furnace and compatible Goodman/Amana models. This gasket maintains an airtight, combustion-safe seal between mating components — such as the burner box, collector, or heat-exchanger flange — preventing flue-gas and combustion-air leakage that hurts efficiency and can create carbon-monoxide risk.
A gasket's sealing performance depends on exact thickness, bolt-hole pattern, and material rating. Trimming a generic sheet gasket to fit risks gaps, blow-out, or degradation at combustion temperatures. This OEM part is pre-cut to the precise factory dimensions for a leak-free, code-correct seal.
Moderate (3/5) — Requires removing the burner assembly or the panel it seals, scraping old gasket residue, and torquing fasteners evenly. Best handled by an experienced DIYer or HVAC technician. Always shut off gas and power, and inspect the heat exchanger while access is open.
Genuine Goodman replacement. Need help confirming fit? Contact info@nationalhvacparts.com.