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The Goodman 4810006S is a genuine OEM flue collector box engineered for GMNT100-4B gas furnaces. The collector box gathers products of combustion from the heat-exchanger tubes and routes them to the inducer and vent while draining condensate. Cracks, rust-through, or a warped gasket surface on the original box cause flue-gas leaks, nuisance pressure-switch trips, and failed combustion — making an exact OEM replacement essential.
There is no true generic for this part. Aftermarket collector boxes rarely match the port geometry, drain location, and heat-exchanger flange of the GMNT100-4B, and a poor seal here is a carbon-monoxide risk. Always use the OEM 4810006S.
Advanced (4/5). Requires removing the inducer assembly, pressure-switch tubing, and gasket, then resealing to spec. Best performed by a licensed HVAC technician who can leak-test and confirm proper draft afterward. Budget 60–90 minutes.
Genuine Goodman/Amana OEM. Restores safe, sealed combustion venting on the GMNT100-4B series.