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The Goodman 2539306S is a genuine OEM 10" x 8" blower housing (scroll/volute) for the Amana AMH80904BNAA gas furnace and compatible Goodman/Amana models. The housing captures the squirrel-cage blower wheel and directs conditioned air into the supply plenum. A cracked, warped, or corroded housing causes air leaks, rubbing noise, and reduced airflow that can trip the furnace on high limit.
The OEM 2539306S matches the exact 10 x 8 dimensions, mounting rail spacing, and motor-mount geometry of the AMH80904BNAA cabinet, so the blower assembly seats and aligns correctly. Generic housings often differ in cutoff position and rail location, throwing off wheel balance and airflow. For quiet, rated airflow, the genuine housing is the correct fit.
Advanced (4/5) — Requires pulling the full blower assembly, transferring the motor and wheel, and re-setting wheel-to-cutoff clearance. Professional installation is recommended. Plan for 45–60 minutes.