IMAGE COMING SOON
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM flue/vent component designed for the VMS80403ANAA gas furnace. This transition piece connects the furnace's induced-draft outlet to the vent pipe, forming a properly sealed, correctly sized path for combustion byproducts to exit safely. A precise fit here is essential for maintaining draft, preventing flue-gas leakage, and passing safe-operation inspections.
This genuine Goodman OEM transition matches the factory flange, diameter, and screw pattern exactly. Generic or fabricated substitutes rarely align perfectly, leading to gaps that require excessive sealant and risk flue-gas escape. For a venting component, exact dimensional fit is a safety matter — the OEM part is the right choice.
Easy to Moderate (2/5). Straightforward for a handy homeowner but touches the venting system. Shut off power and gas before starting. Remove the existing transition, seat the new bottom against the factory flange, secure with the original screws, and seal per code with approved high-temp sealant or foil tape. After reassembly, verify proper draft and check for spillage. When in doubt, use a licensed HVAC technician.