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The Goodman B1392139 is a genuine OEM view port bushing (sight-glass grommet) used on the AMES960603BUAA and compatible Goodman/Amana furnaces. It seats in the burner observation window opening, providing a clean, sealed pass-through so technicians can safely inspect the flame while keeping the combustion cabinet sealed.
Because this bushing sits near the burner area, the OEM B1392139 uses the manufacturer's specified heat-rated material and exact dimensions. Generic substitutes may not seal properly or may not withstand cabinet temperatures — we recommend the genuine part.
Easy — press-fit into the port opening, no tools required. Replacement takes about a minute with power off.
Need help confirming this fits your furnace? Email info@nationalhvacparts.com.