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The Goodman 4053501S Chimney Collar is the genuine OEM flue-vent connector that seals and secures the exhaust outlet on GMPV100-5 gas furnaces. It provides the transition between the furnace's flue outlet and the vent pipe, maintaining a tight connection that keeps combustion byproducts moving safely out of the equipment. A corroded or ill-fitting collar can allow flue-gas leakage and compromise draft, so a proper OEM replacement is important for safe operation.
The OEM Goodman collar is stamped to the furnace's exact outlet diameter and mounting pattern, ensuring a leak-free seat. Generic collars frequently mismatch the flue size or hole spacing, forcing field modifications that can undermine the vent seal. Use the factory part to preserve a safe, code-compliant venting connection.
Rated Easy to Moderate. With power and gas off, remove the vent pipe, unscrew the old collar, seat and fasten the replacement, then reconnect the vent. Confirm a tight seal before returning the unit to service.