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The Goodman 5660205S is a genuine OEM blower housing (fan scroll) sized 10 x 8 inches for the GUPI075-4 gas furnace. The housing encloses the blower wheel and directs conditioned air into the supply plenum, and its cutoff plate and volute geometry are matched to the furnace's rated CFM. A cracked, rusted, or warped housing causes air leakage, whistling, reduced airflow, and premature blower-motor wear.
The OEM 5660205S guarantees exact bolt-pattern, cutoff, and wheel clearance for factory airflow performance. A generic housing offers a budget-conscious alternative when precise CFM tuning is not critical, though we recommend OEM for the GUPI075-4 to maintain rated static pressure.
Difficulty: Moderate. Requires removing the blower assembly, transferring the motor and wheel, and setting proper wheel-to-cutoff clearance. Plan 45–60 minutes; basic hand tools and a nut driver are needed. Cut power at the disconnect before removing the blower deck.
Reuse or replace the blower wheel (B1368016S) and motor as needed while the assembly is out for the cleanest, most efficient result.