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The Goodman 5660205S Blower Housing is a genuine OEM 10 x 8 inch scroll assembly for the GUPX075-4B gas furnace. The housing encloses the blower wheel and directs conditioned air into the supply plenum, maintaining the proper airflow and static pressure the furnace was engineered for. Replace it when the original is cracked, corroded, or damaged, or when rebuilding the blower assembly.
The OEM Goodman 5660205S is dimensionally matched to your furnace's blower deck, motor mount, and cutoff plate, preserving the factory airflow profile. Aftermarket housings often differ in mounting-hole pattern and cutoff geometry, which can create noise, air leakage, or reduced CFM — so the factory housing is recommended.
Moderate to Advanced (4/5). Requires removing the blower assembly, then transferring the motor, blower wheel, and cutoff to the new housing while maintaining wheel clearance and centering. Disconnect power before pulling the assembly. Balance and clearance checks are important to avoid vibration.